Design of Vessels: Hull-Machinery-Costs-Performance/Ops      Top

Archived Messages

Count,MessageID,category,ShortTitle,Message,Date,UserName,MsgPswd,Phone,Email,ParentMsgId

“1”,”912645″,”3″,”Re; Re; Re; A faster pontoon boat||912645″,”FYI: Several people around the USA are working on adding foils to pontoon boats… hobbyists, not manufacturers. Their correspondence with IHS is archived and accessible. Go to the main IHS page at www.foils.org and use the PicoSearch Engine to look for the word “pontoon.” That will lead you to several citations.”,”2005-10-12″,”Barney C Black”,”poopdeck”,” “,” “,”911944”

“2”,”911944″,”3″,”Re; Re; A faster pontoon boat||911944″,”There’s a company in Canada www.u-fabboats.com that I have shared what I learnedand are planning to offer a foil kit on there pontoon boats. It will be a hydro-foil assisted with a fixed foil in the tunnel. Which will reduce wetted surface I guess thats what it’s all about? I been playing around with a fixed foil and have had much luck with it I was focusing on slow speed. 12 mph and she’s on a plane and thats at gross weight I am planing a motorsailing cat around this concept.”,”2005-10-12″,”Mike”,”nopswd”,” “,”info@buildboats.info”,”888662″

“3”,”888662″,”3″,”Re; A faster pontoon boat||888662″,”I have thought about this as well. Trick is, don’t get too high out of the water. It is tempting to want to run the hull 3 feet out of the water to skim through wakes, but a sudden drop will be more than the hull was designed for. Lifting the hull 10 inches will give you speed and fuel economy, with less structural risk. Raising and lowering an outboard is a great way to accomplish powering the boat. I would be concerned about what will happen when the foils hit something (and they will). A front foil centered between the hulls could pivot back up between the hulls. The rear foil or foils could be fixed to the structure behind the hulls, and pivot up when trailering or running shallow. The trick (as I have learned from my dynafoils) is to have the rear strut mounted so that the foil is in front of the pivot point. That is, the rear strut(s) would go from the pivot point at an angle, the bottom of the strut forward of the top of the strut. Helps keep weeds off too. Why is this important? If the rear strut is vertical and operates on a pivot, after striking debris the strut would begin to pivot backwards. As it does the foils angle of attack changes. At some point in the travel the foil will be perpendicular to the drag load placed on it and it will not rotate up out of the water. Kiss your transom goodbye, keep pliers handy to pull your teeth out of the dashboard. If the foil is forward of the pivot things change. The foil will become perpendicular to the direction of travel while still well below the axis point. By the time the strut rotates far enough to line the center of drag up with the centerline of the structure, the foil is now operating backwards with positive lift. This forces the strut to continue rotating up and out of the water, saving you a lot of pain.
If you would like to take a look at the dynafoil system, or just talk, feel free to drop me a line. I just moved up from Miami to Stuart. By the way, a lot of talk goes into how to control roll in hydrofoils. While this is a concern with ships, I am convinced it is far less complicated with smaller boats. If you have ever ridden a bicycle I’m sure you have learned that you already have the ability to overcome roll issues with steering. After a while you don’t even realize you are doing it.”,”2005-09-05″,”Scott Smith”,”nopswd”,” “,”boatswithwings@adelphia.net”,”3″

“4”,”853019″,”3″,”Re; Re; A faster pontoon boat||853019″,”Good luck with your project. Hope this helps.

Bob’s Machine Shop make the motor lifting plates you need. You can find them at.

Home

Several catamaran builders and designers make the keel mounted foils systems you are talking about. See for instance the Hysucat Hydrofoil System.

http://admin.sun.ac.za/kie/unistel/technologies/foiltech.htm”,”2005-06-29″,”william white”,”nopswd”,” “,”whitewn@speakeasy.net”,”0″

“5”,”852923″,”3″,”Re; A faster pontoon boat||852923″,”I’ve been fighting that problem for some time. The easiest technique would be to jack the outboard motor up/down with spring-loaded and hydraulic jackplate. The rear foil which fits between the tubes, would move with the motor. A similar arrangement for the bow. If you allow the tubes to just skim the water that will keep the boat more stable. Make sure that going aground won’t be catastrophic. I’d love to find someone “local” to work with on my pontoon project. barry_steele@yahoo.com”,”2005-06-29″,”Barry Steele”,”nopswd”,” “,” “,”0”

“6”,”852922″,”3″,”Re; A faster pontoon boat||852922″,”I’ve been fighting that problem for some time. The easiest technique would be to jack the outboard motor up/down with spring-loaded and hydraulic jackplate. The rear foil which fits between the tubes, would move with the motor. A similar arrangement for the bow. If you allow the tubes to just skim the water that will keep the boat more stable. Make sure that going aground won’t be catastrophic. I’d love to find someone “local” to work with on my pontoon project. barry_steele@yahoo.com”,”2005-06-29″,”Barry Steele”,”nopswd”,” “,” “,”0”

“7”,”852376″,”3″,”A faster pontoon boat||852376″,”Living in Florida I spend a lot of my time on the water and most of it in the shallows. Pontoon boats offer the best way to take the party with me, slowly. A pontoon with retractable foils would be the best of both worlds. Any body out there tried this? I have given this a great deal of thought and have many ideas how to achieve this but expert advice is always welcome. Any advice where to look for info besides this excellent website would be greatly appreciated. Opinions on this would be welcomed aswell. “,”2005-06-28″,”Brian Scott”,”nopswd”,” “,”brian.scott.ctr@hurlburt.af.mil”,”0″

“8”,”792474″,”3″,”TUCUMCARI||792474″,”Hello,

For the past 26 years I have served as a project supervisor creating museum exhibits in honor of U.S. vets and those of our allies. Some of the venues I have done work for include the USS Intrepid Sea Air Space Museum and the Museum of Polish Military Heritage in America, both in New York City. Load my name Mike Dobrzelecki into a Google Search Engine and you’ll see examples of some of my work on two continents over the years.

I saw your name & email on the IHS website and hope you can provide some help on a research project concerning the Tucumcari PGH-2.

I built the old Aurora kit when it first came out in the late 1960’s early 1970’s (?) and not too long ago picked up a derelict unpainted damaged built-up, as well as a pristine complete kit still in the original box. I even still have some parts from my original build model.

My intent is to build one ‘flying’ and one in the water with its struts and foils folded up and possibly write a good article on the Tucumcari.

I have everything available on the internet for this fascinating hydrofoil, as well as, the old Sea Clasics issue with the Tucumcari on the cover. Recently, I obtained a copy of the History Channel Mail Call episode with the world’s most famous D.I. narrating exquisite video of the this fast-fighting boat in action – great footage, BTW. I have even manage to track down some of its crew for personal interviews. Most frustratingly, the crew I talked to so far all stated that their photos went missing during moves over the years.

I am looking for more photos including details of the interior, the exterior fit on the cockpit/bridge and upper surface of the hull and an answer to what’s in the large opening aft of the .50 cals and masts/antennae. I would also like to track down some more crew and any other books or naval history magazine articles on the the Tucumcari. Any leads would be appreciated.

Mike Dobrzelecki
3040 Clayton Street
Easton PA 18045
“,”2005-03-07”,”Mike Dobrzelecki “,”members”,” “,”Michael_Dobrzelecki@fwc.com”,”0″

“9”,”737553″,”3″,”Foil or Log?||737553″,”I don’t know what calculator you’re using, but if it’s telling you you can get good results from a section with a 50% thickness ratio and 25% “profile curvature” (camber?), I think you need to get a new calculator. These numbers sound like your foil section is a half-circle. Might there be just a little bit of flow separation coming off such a shape? “,”2004-11-13″,”Tom Speer”,”nopswd”,” “,”me@tspeer.com”,”0″

“10”,”737001″,”3″,”Hydrofoil Design Validation||737001″,”I downloaded a hydrofoil simulation calculator and wanted to verify the results I am getting.
Can someone tell me if the following numbers are accurate? I am trying to get the highest amount of lift I can for a constant water velocity over hydrofoil of 20m/sec or 38.9Knots. I am also trying to keep the foil span as short as possible.

Here are the input numbers:
Foil Area Square Meters: 1 Sq M (1M span X 1M chord)
Speed M/sec: 20 M/sec
density of water kg/m^3: 1000
thickness of foil divided by chord: 0.5
Aspect ratio (Foil span/chord): 1 “This is a square foil I know”
Angle of attack: 14.32 degrees
Profile Curvature: 0.25

The calculation is claiming that the hydrofoil would produce 53690 pounds of lift with these numbers. I need to make sure this is true and also that the wing is not in a stalled state on these numbers.
Greatly appreciated. Sidenote: Would anything change if I put a rectangular ducting around the hyrdrofoil? I know in airfoils and fans, the ducting produces more volume of airflow.
BE”,”2004-11-12″,”Foiled Again”,”nopswd”,” “,”mirequest@yahoo.com”,”0″

“11”,”732177″,”3″,”Re: planing hull seakeeping||732177″,”I don’t have a copy of these articles, but I would suggest contacting the Davidson Laboratory via their web page at:
http://www.stevens.edu/engineering/cms/
“,”2004-11-03″,”Barney C Black”,”poopdeck”,” “,”barney@alum.mit.edu”,”0″

“12”,”722280″,”3″,”planing hull seakeeping||722280″,”I am looking for copies of Gerard Fridsma’s two publications:

Fridsma, G., “A Systematic Study of the Rough-Water Performance of Planing Boats,”Davidson Laboratory, Stevens Institute of Technology Report 1275, Nov. 1969.

Fridsma, G., “A Systematic Study of the Rough-Water Performance of Planing Boats – Irregular Waves Part II,”Davidson Laboratory, Stevens Institute of Technology Report 1495, March. 1971.

Can anybody supply me with copies of these?”,”2004-10-12″,”Gunther Migeotte “,”nopswd”,” “,”gunther@cae.co.za”,”0″

“13”,”699947″,”3″,”Re: Engine Torque||699947″,”I have several small hydrofoils, probably similar to what you are trying to do. They are called Dynafoils (a search of the archive will turn up pics for you)and are about 8′ long, similar to a one-person sit-down waverunner. They were available in two HP’s, a 26hp model, and a 36hp model. Neither used a torque convertor. They used 2 cylinder, 2 stroke snowmobile engines, direct coupled to a 90 degree gearbox, to a downshaft with an evinrude outboard lower unit. The 26hp unit used a 9-1/4″ dia. by 7″ pitch prop, the 36hp unit uses a 9×9 prop. My 36hp Dynafoil leaps out of the water pretty well, and does about 35 mph. If you like, I can send you pictures, videos, or you can stop by in Miami and go for a test ride 🙂

If you are considering a 4-stroke, also consider a rev-limiter.”,”2004-08-26″,”Scott Smith”,”nopswd”,” “,”ssmith@syntheon.com”,”0″

“14”,”694448″,”3″,”Re; Re; Re; Engine Torque||694448″,”Barry,
Thank you for the information. What make is the prop…
“,”2004-08-13″,”Philip”,”nopswd”,” “,”kernowii@sympatico.ca”,”0″

“15”,”693009″,”3″,”Re; Re; Engine Torque||693009″,”For my application I have purchased a variable pitch prop for my mercruiser outdrive. The 3 blades to the prop are spring loaded with a lower pitch (around 16) for getting out of the hole and up on the foils. When the engine picks up speed, centrifugal force rotates the blades for up to about 25 pitch. This keeps the engine running within a fairly tight speed range. They are available for outdrives, outboards and inboards.”,”2004-08-11″,”Barry Steele”,”nopswd”,” “,”barry_steele@yahoo.com”,”0″

“16”,”692414″,”3″,”Re; Engine Torque||692414″,”Philip,

I would have expected that torque converters would rarely be required for small craft such as you describe. These devices result in a loss of power between the engine and the propeller and so a more efficient solution would be to select an outboard and propeller combination with an optimum gear ratio and propeller pitch to diameter ratio.

Hydrofoils have a resistance versus speed curve that means they require a relatively high thrust at takeoff speed and after that the resistance curve is more flat. Some larger hydrofoils (such as the Supramar PT 150) therefore had torque convertors of some form fitted to cope with this characteristic such that the engine would not be overloaded during takeoff but would run near optimally at cruise speed. For a smaller hydrofoil, there would typically be a surplus of power across the full speed range, but you may be adopting an outboard with relatively low power output so the takeoff condition may become critical for your boat.

Note that when using gearing in an outboard, the following relationship applies:

Power = (Torque) x (Rotational Speed)

Metric units for this equation are Watts, Nm and rad/s respectively.

Put another way, if you use a reduction ratio of 2:1 then the propeller shaft RPM will be half the engine RPM but the torque available at the propeller will be double that at the engine output shaft (neglecting any losses in the gearing due to friction). You can play with gearbox ratios until you obtain the required torque and RPM combination you need at the propeller. “,”2004-08-10″,”Martin Grimm”,”nopswd”,” “,”seaflite@alphalink.com.au”,”0″

“17”,”687245″,”3″,”Engine Torque||687245″,”I’m currently reviewing a design for a small one-person hydrofoil powered by a 15hp-25hp long shaft outboard. The question of engine torque has arisen and the need for an engine mounted torque converter however; in reading a lot of the design material on these pages (excellent guidance by the way) I have yet to come across this issue being discussed. Is torque a major design consideration on small (<9 feet) hydrofoils?”,”2004-07-30″,”Philip”,”nopswd”,” “,”kernowii@sympatico.ca”,”0″

Propulsors

Arneson Drive For Sale

• • [2 Feb 02] This asd 6 drive is for sale. I think it would be a good drive for a hydrofoil. The drive is like new. Price $1,900. Credit cards OK. — Fred Rodolf (

FREDRODOLF@aol.com

• • )

[Date/Time=03-23-2002 – 12:33 AM]

Name:webmaster@foils.org [Msgid=237120]
Safety
Safety Rules

• • [2 Sep 97] I read in the Summer ’97 issue of the IHS Newsletter about the American Bureau of Shipping (ABS) rules for high speed craft and will order a set. Do you know if there is a set of Coast Guard rules for safety? –Stan Siegel (

stansiegel@aol.com

• • ).

• • Response…

• • [2 Sep 97] The U. S. Coast Guard publishes a multi-volume “Marine Safety Manual” which can be downloaded from their website in Adobe Acrobat format. The Table of Contents does not mention high speed craft specifically, but there may be info buried in the individual chapters. The USCG (and IHS) participated actively in reviewing the International Maritime Organization’s (IMO’s) safety standards for high speed craft, published as Chapter X of the International Convention for the Safety of Life at Sea (SOLAS), available from from various booksellers. See the IMO home page for more info. — Barney C. Black (

webmaster@foils.org

• • ).

[Date/Time=03-23-2002 – 12:35 AM]

Name:webmaster@foils.org [Msgid=237121]
Archive; Bigger Wakes For Wakeboards
Click Below to Open.

[Date/Time=03-24-2002 – 2:07 AM]

Name:Webmaster@foils.org [Msgid=237510]
Archive; Design Texts, Software, Sources
Click Below to Open

[Date/Time=03-24-2002 – 3:30 PM]

Name:webmaster@foils.org [Msgid=237692]
Archive; Ultra-Hi Speed Hydrofoils
Click below to Open

[Date/Time=03-24-2002 – 4:09 PM]

Name:webmaster@foils.org [Msgid=237699]
Archive; Info on Books, Films, Articles
Click Below to Open this Archive.

[Date/Time=03-25-2002 – 2:52 PM]

Name:Webmaster@foils.org [Msgid=238065]
Archive; Engines Sources, Maint, Repair
Click Below to Open this Archive.

http://archive.foils.org/engine.htm
[Date/Time=03-25-2002 – 3:10 PM]

Name:Webmaster@foils.org [Msgid=238073]
Archive; Commercial Operating Costs
Click Below to Open this Archive.

http://archive.foils.org/opcost.htm
[Date/Time=03-25-2002 – 3:45 PM]

Name:Webmaster@foils.org [Msgid=238096]
Archive; Drag Reduction

Click below to Open Arcive:

[Date/Time=04-20-2002 – 6:22 PM]

Name:webmaster@foils.org webmaster@foils.org, [Msgid=249644]
Archive; Seakeeping / Motion Sickness

[Date/Time=04-20-2002 – 6:33 PM]

Name:webmaster@foils.org webmaster@foils.org, [Msgid=249650]
science fiction

ViewThread

• • I have written a science-fiction novel on an imaginary watery planet and have included hyrofoil vessels.

• • I’d like to know if my fictional use and description of hyrofoils seems possible and accurate.

• • Floatplanes with hydrofoil struts: These planes are about the size and speed of a Piper Cub although lighter due to use of carbon fiber components. It can also fly as a glider. The hydrofoil struts fold while the craft is in air flight. The wing fold when the craft opperates as a boat. A propulsion device, which runs off of a hydrogen fuel cell delivers periodic burst of power. The cadence of the burst can be adjusted to coordinate with air and water conditions. This planet has no fossel fuels and so energy efficency is of utmost importance, thus the importance of a engine that can be turned off when not needed.

• • Sail hydrofoils: I imagine them as small and lightweight for carrying two people with no cargo. They have auxilary power provided by the same propulson device that is on the aircraft. The propulsor is used get onto step quickly.

• • I’d like to know about how tacking works with hyrofoils. How close to the wind do you need to be to stay on step? A friend of my thought it would only work on a reach.

• • My story includes a scene with a battle between a guy in the aircraft and a bunch of guys in the sail hyrofoils. The guys in the sail hyrodfoils mounted howitzers onto their crafts (they were not designed for this usage) If they shoot in the wrong direction, while healed over, the boat capsizes. The guy in the aircraft has a laser cutter which doesn’t do much unless he strikes sensitive parts of the hydrogen tanks.(His craft can’t carry the batteries or other power source for a big laser)

• • Does this sound reasonable?

[Date/Time=08-30-2002 – 4:20 PM]

Name:Lizzie Newell lizzie-n@gci.net, [Msgid=303576]
science fiction

• • All sounds well, with a few small points. Sailboats rely on momentum to carry them through a tack. The same momentum keeps the boat foilborne. Some hydrofoil sailboats like the Windrider have trouble staying up while tacking, but that is because of the control system, not the foils. The Hobie Tri-foiler tacks while foilborne with no trouble. Also, recoil from a gun would not cause the boat to capsize. Foils can pull down on one side of the boat as well as push up on the other, which also means that a well designed hydrofoil sailboat doesn’t heel. Plus the recoil is so short lived it would be absorbed by the mass of the hull and the foils wouldn’t even need to react. However, such a recoil would likely damage the structure of the boat. Fire a large caliber rifle, it doesn’t have time to push you off your feet, but it will hurt like hell if it’s not tight to your shoulder. A more troublesome device for a hydrofoils would be something that induce prolonged thrust, like a mini-gun (electric gatlin gun). A high power rifle will not knock you over, but a 9mm machine gun (much lower power) will certainly push you off your feet if you are not braced for it. Fired forward it would produce a reaction thrust that would slow a boat down. Backwards it would add to the thrust of the boat (not a problem for a foil). Sideways would be like being on a reach in a strong wind. The foils would have to adjust, and the extra angle of attack would induce drag. But if the direction of fire is slightly to the rear, the pressure on the hull would increase it’s speed, just as the pressure on the sail in a reach adds to the hull speed. You might want to look up something called a “gyro jet”. It was a pistol cartridge invented a while back that used a sort of spin-stabilized rocket propulsion. Artillery is too heavy for a hydrofoil sailboat. Simply put, twice the weight, four times the drag. The Gyro jet was almost recoiless, required a much lighter gun, and I believe is the technique used by many hand-held flareguns today. As far as how close to the wind you can sail a hydrofoil boat, wind direction is only a problem as it relates to hull speed. If a sailboat can achieve 20 knots 15 degrees into the wind, so can a foilborne sailboat. The most likely problem would be going downwind. A sailboat is always slower than the wind going downwind. A 10mph wind would not be likely to keep any hydrofoil sailboat up on it’s foils, not matter how efficient it is.

• • Hope this was of some use,

• • Scott

[Date/Time=09-03-2002 – 9:09 AM]

Name:Scott Smith ssmith@syntheon.com, [Msgid=304776]
science fiction/fact

• • Some additional sailing hydrofoil information: there is a whole new type of sailing hydrofoil(though Monitor was actually the first) being developed around the world: the monofoiler. These boats are stabilized(generally ,but not always) by the crew; they are basically monohulls not multihulls such as the Rave and Trifoiler.You can see an overveiw of some of these boats at:http://www.monofoiler.com These boats can sail on as few as two foils and are a new wave in sailng hydrofoils.

• • Sailing hydrofoils most certainly can sail downwind at speeds substantially higher than wind speed: they do it by tacking downwind(actually and technically-gybing) .A well designed foiler can point as well as “normal” sailboat and at any rate it’s VMG(speed made good to windward) will be better.

• • At least one new monofoiler, the Dancer, has been designed to jump: the flying system is controlled by the skipper and ,at will, he can twist the hiking stick, pull the trigger and jump clear of the water(!)–just for the fun of it!

[Date/Time=09-24-2002 – 9:37 AM]

Name:Doug Lord lorsail@webtv.net, [Msgid=313865]
Hydrofoils are more than speed

• • Why is speed always the focus when reading about hydrofoils? Consider the following:

• • 1. Today in Sweden (Scandinavia, EU) the price/US gallon of diesel is about USD3.90 to USD4.00 due to tax

• • 2. 95 % of all running time of pleasure boats takes place in smooth weather with moderate wave sizes (in fact the waves that cause irritation, not problems, are those generated by other boats, not the weather/wind. This is due to the large protected water areas by the archipelagoes surrounding Scandinavia and also due to rather low statistic average wind (force 2-3, Baltic coast areas)

• • 3. The trend for pleasure boats is not always towards larger size but more towards comfort and luxury, etc., which makes the boats heavier. A 25-ft powerboat costs almost double the price in 2002 compared to the price of the same length craft a few years ago (including correction for inflation)

• • 4. The average cruising speed is 22-26 knots even if top speed is 32 -40 knots. In fact, the average speed very seldom surpasses 22 – 26 knots. Rather often you see powerboats in the size 25 to 40 ft operated at 12 – 17 knots albeit they are built for higher cruising speeds. When I ask people why they are running their boat this way, frequent answers are: for comfort and/or economy/mileage reasons. The comfort factor is important (i.e. not to have to reduce speed frequently when meeting waves from other boats/ferries etc. which in fact now is the case. It is not due to poor performance of the boat – it is for better comfort, sometimes noise factor, compared to cars.

• • Having these aspects in mind, the relatively simpler design task of hydrofoils for smaller boats compared to ferries may be could open up opportunities if comfort, noise, and mileage are focused on instead of just the high speed performance.

[Date/Time=10-15-2002 – 7:16 PM]

Name:Tomas Järnmark Tomas.Jarnmark@electrum.se, [Msgid=324184]
Read a Good Book Lately?

• • Are there today any sort of updated standard “bible” books (for designers, producers, students, etc.) that summarize what is acknowledged know-how (R&D, field experiences, truths & myths, designs, developments, costs, performances, bench marking comparisons etc)? If so where can I order these?

[Date/Time=10-15-2002 – 7:17 PM]

Name:Tomas Järnmark Tomas.Jarnmark@electrum.se, [Msgid=324185]
Do Foils Equal Comfort?

ViewThread

• • Is a hydrofoil-based boat in the size of 27 ft more comfortable (cut through larger waves with better comfort, movements, splashes, etc.) at 25 knots than a surface-planing boat of the same size and speed?

[Date/Time=10-15-2002 – 7:20 PM]

Name:Tomas Järnmark Tomas.Jarnmark@electrum.se, [Msgid=324187]
Do Foils Equal Comfort?

• • Yes,

[Date/Time=10-27-2002 – 7:30 PM]

Name:Harry Larsen hlarsen0@gte.net, [Msgid=329671]
Yes, Foils Equal Comfort!

• • Harry should know. Visit his most interesting website at

http://home1.gte.net/hlarsen0/
[Date/Time=10-29-2002 – 7:13 PM]

Name:Barney C Black webmaster@foils.org, [Msgid=330715]
Fibreglass Ship Manufacturing

• • I am writing on behalf of one of my friends who lives in Iran. He is an inventor and would like to inquire for some information on manufacturing a fibreglass ship with 500 tonnes capacity in the merchant sector. It would be a greatly appreciated if you would alert me to any information resources on modeling, manufacturing (ship and or fibreglass). and the possibility of using fibreglass in this case?

[Date/Time=12-20-2002 – 3:37 AM]

Name:Mehrdad Tavana m30tavana@yahoo.com, [Msgid=353812]
NACA 0015 Pressure Distribution

ViewThread

• • I’m looking for the theoretical pressure distribution (considering an

• • invicid flow) for different angles of attack, for the NACA 0015.

[Date/Time=03-25-2003 – 7:43 PM]

Name:R. Sosa rsosa@fi.uba.ar, [Msgid=403003]
Re; NACA 0015 Pressure Distribution

• • I have access to a program called WingAnalysis Plus which is able to calculate the pressure coefficients for a range of foil types. You can purchase a copy of that program via the internet though I don’t have the website address at hand.

• • I have calculated the distribution of pressure coefficients for the NACA 0015 foil at a range of angles of attack from 0 to 10 degrees at 2 degree increments. The results are attached as an Excel spreadsheet.

• • Remember that these results are obtained from a theoretical method and so don’t represent measured test data. I can’t promise the results are accurate. I believe it should also be possible to derive the Cp distribution around a NACA 0015 foil at various incidence angles by reference to the text book “Theory of Wing Sections” but I have not yet done so myself. If you have found better (experimental) data, perhaps you can post a message letting people know where that data can be found.

[Date/Time=05-28-2003 – 11:54 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=442981]
Attached File  “NACA0015CpvsAoA~xls.zip” – size 54784   Click Here To Download
X-Craft Press Release

ViewThread

• • Titan Wins Contract To Build Navy’s X-Craft

• • San Diego – Feb 26, 2003 – The Titan Corporation of San Diego said Tuesday that it has been awarded a $59.9 million contract by the U.S. Navy’s Office of Naval Research (ONR) to develop and build the Navy’s “X-Craft”.

• • The X-Craft will be a high-speed aluminum catamaran consisting of an advanced hull geometry, designed to give the craft speeds of 50 knots or more. Initially it will be used by ONR for purposes of hydrodynamic experimentation to include the addition of advanced lifting bodies and polymer drag reduction techniques.

• • The X-Craft’s deck will have two helicopter landing spots capable of handling a variety of aircraft up to the size of the H-60 helicopter series. With a design displacement of approximately 1,100 long tons, the 80m. long by 22 m. wide X-Craft will be self-deployable and of flexible design for spiral technology insertion. A Combined Gas Turbine or Diesel (CODOG) propulsion plant will propel the X-Craft to speeds of 50 knots or more. The CODOG propulsion plant is expected to consist of two GE LM-2500 gas turbine engines totaling 50,000 hp and two MTU 16V595 16-cyl 4380 kW diesels driving KaMeWa 125SII waterjets through Renk gearboxes.

• • The vessel’s Mission Module Bay will be capable of fully supporting multiple mission packages simultaneously.

• • Titan also announced that it is awarding to Nichols Bros. Boat Builders, Inc., a subcontract to provide hull, mechanical, and electrical ship systems for the U.S. Navy’s new X-Craft.

• • This award to Nichols Bros. completes an RFI and RFP effort initiated by Titan less than six months ago. Nichols Bros. Boat Builders, headquartered in Freeland, (Whidbey Island) WA, specializes in the building of high-speed catamarans and other vessels.

• • Work on the X-Craft was expected to begin in May 2003 and deliver in August 2004.

• • A later phase of the program will add a lifting mid-body and a polymer injection system.

[Date/Time=07-26-2003 – 8:18 AM]

Name:Greg Bender glbender@erols.com, [Msgid=476489]
Re; X-Craft Press Release

• • See the Hydrofoils:Military category of this BBS for a thread of recent discussion on the X-Craft.

[Date/Time=07-27-2003 – 8:58 AM]

Name:Barney C. Black webmaster@foils.org, [Msgid=476922]
Hydrofoils vs Tunnel Hulls?

ViewThread

• • Given that the two are of similar weight and power, which is generally faster and has less drag, a hydrofoil, or a tunnel hull (like raceboats)?

• • I know that the two work very differently, and am very intersted in finding the answer to this question.

[Date/Time=12-31-2003 – 6:15 PM]

Name:Timothy Shaw slickmod@hotmail.com, [Msgid=565242]
Re; Hydrofoils vs Tunnel Hulls?

• • Hi Timothy,

• • Although I am a hydrofoil enthusiast, my gut feeling is that for relatively calm water powerboat racing applications, the tunnel hull (such as unlimited hydroplanes) would come out as having less drag and hence translating to more speed than a hydrofoil design for the same installed power.

• • Tunnel hulls seem to just skim over the water on the ends of their three(?) planing surfaces when at speed, so it is hardly a case of them having excessive wetted surface area which is what leads to frictional resistance. On the other hand, a hydrofoil design, even with only the very small hydrofoils that would be needed to support a relatively light boat at such high speeds, would still incur the additional drag of the supporting struts. The high speed would also mean that supercavitating foils are likely to be required and these don’t tend to have particularly high lift to drag ratio’s. Some means of surface sensing would probably also be required to control the foil angle of incidence so that the craft remains stable. This would probably mean using a planing surface sensor with associated drag as well.

• • I would be delighted to hear that the opposite is that case, but then why are there no hydrofoils competing in “unlimited” powerboat races? Surely it is not just as simple as that nobody has thought about trying this idea or that hydrofoils are not permitted by the rules of an “unlimited” race!?

• • By the way, hydroplanes do seem to make use of hydrofoils of sorts (probably also supercavitating foil sections?), in way of high aspect ratio skegs mounted on one side of the hull as a means of aiding in getting a “grip” when going around the circuit. They don’t help lift the boat, if anything they stop it from toppling over in a sharp turn. At least that is my understanding. Perhaps you can enlighten us more about those devices?

[Date/Time=01-01-2004 – 10:40 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=565409]
Re; Re; Hydrofoils vs Tunnel Hulls?

• • Martinn,

• • I am aware of at least one person who was involved with hydroplane racing that looked at putting supercavitating foils on the sponsons. I believe he petitioned APBA (American Power Boat Association) but do not know the outcome. This individual died last year, he was in his late 90s. He was also involved in the Boeing High Speed Test Craft in its early trials.

• • Sumi Arima

[Date/Time=01-02-2004 – 1:05 PM]

Name:IS. Arima arimas1@juno.com, [Msgid=565775]
Re; Re; Hydrofoils vs Tunnel Hulls?

• • It doesn’t seem likely that anyone using a hydrofoil will successfully compete against tunnel hulls, unless they come up with something radically different. It doesn’t really matter whether you are discussing the small, sheltered water tunnels (commonly called a pickle fork), or the big, open water cats. Both of these boats are now capable of very high speeds. Since at these speeds they are no longer pushing a bow wave, the induced drag is very low. The drag from any foil system at 100mph+ becomes very high, regardless of how well designed or made the struts and foils are. Ask one of the open water boat designers how much drag force the skegs have to handle, you might be surprised at the answer. But a large part of the problem is control systems. Even with a good, fast system for controlling the foils, at those speeds the slightest glitch would be a disaster. The occaisional rogue wave has destroyed many a racers dream for victory. I remember when a 40 foot cat nosed into a rogue wave and was driven straight to the bottom, killing both crew members while doing almost no damage to the boat. Imagine what could happen if you managed to get a negative angle of attack on a foil for even a fraction of a second at 100mph. It would be catastrophic. And the smaller sheltered water boats can easily pull more than a G in a fast corner, the slightest tracking error induced by a foil or strut would be equally destructive. But being a foil enthusiast as I am, I would love for someone to prove me wrong. 🙂

[Date/Time=01-23-2004 – 8:19 AM]

Name:Scott Smith ssmith@syntheon.com, [Msgid=576707]
Re; Re; Hydrofoils vs Tunnel Hulls?

• • Timothy and Scott

• • From my perspective at speeds of 100knots and up the US Navy in the Seventy’s built Two 100 Ton, 85 ft Surface Effect Craft to explore the potential. One was powered by Partially Submerged Supercaavitating Propellers (most racing surface drives are direct descendants of these) and the other powered by two stage axial waterjets. Both these craft were essentiall very fine hulled catamarans at high speed. Just a couple of feet of the aft length of their hulls were in the water at speed, and then only a couple of inches deep. This along with aft fins/rudders provided directional stability. The lift fans and Skirts kept the hulls out of the water at lower speeds, say 0 to 60kts), but at very high speed thay almost operated like a pure tunnel hull with a very wide tunnel.

• • Both these vessels used the air cushion to control the heave and pitch of ride at very high speeds. They had response frequencies of up to 100hz and needed it. But they worked very successfully.

• • To prevent the catastrophic pitch-ins you desribed, the Navy did a lot of research in shaping the above water shape of the Cat hulls and the Bow cross structure ramps between the hulls. One of them even had above water anti pitch foils attached at the bow that were a last resort to prevent pitch-ins. During there 10 year lifetimes they operated in all sea conditions offshore (greater 10+ significant wave height). The only reason they ever slowed down was for visibility or the crew got tired of the beating when in severe seas.

• • Most Hydrofoilers consider that the Navy’s PHM hydrofoils had the highest performance, but they only went about half the speed of these SES. The great benefit of the hydrofoil especially the fully sbmerged type on the PHMs was the ability of the active ride control system on those foils to level out the ride in waves less than 10 ft significant height. They could also operate in even higher seas but would start to countour the swells in these very high seas.

• • I worked on the ride control systems for all these craft and it was indeed state of the art then and easily now to control the actuators at the very high frequencies needed to keep them safe.

• • As for resistance.

• • Both Hydrofoils and Tunnel Hulled Cats can be very efficient or very Inefficient according to the skils of the designer. On average. most tunnel hulled cats at high speed (100kts) are close to fifty percent more efficient than hydrofoils. There are a lot of people in IHS who would disagree with me there. The reason why is that the propulsion efficiency has to be accounted for too.

• • In the PHM the waterjets were mounted very high 12 feet above the water and had lots of losses especially in the zee shaped water inlets.

• • The two Navy SES 100 ton vessels had about a twenty percent speed difference for about the same power due also mostly to the difference between the Waterjet (lower efficiency) and the Partially Submerged Supercavitating Propellers (high efficiency and no struts or exposed prop shafts).

• • Design is all about choices, and a good Naval Architect can make any of these hull forms into a reasonably well performing vessel.

• • Enjoyed your comments

• • Bill White

[Date/Time=01-26-2004 – 8:31 AM]

Name:Bill White whitewn@speakeasy.net, [Msgid=578306]
Transport Efficiency of Hydrofoils etc

• • Hi Bill,

• • Good to see we are not all only passionate about hydrofoils and can see merit in other forms of high speed marine craft.

• • Naval Engineers Journal, February 1985, page 211 indicates that the maximum speed of SES 100A was 80 knots (approx) and SES 100B was 90+ knots. Displacements were 289,650 lb (129.3 tons) and 206,000 lb (92.0 tons) respectively while total installed power (lift and propulsion) was 15,000 HP and 15,360 HP respectively.

• • In comparison PHM displacement was 249.7 tons (NEJ, Feb 85, page 173) and power was 17,000 HP (page 161). Speed was 50 knots plus.

• • Comparing calm water transport efficiency (displacement x speed / power) we have approximately:

• • SES 100A = 0.690 ton.knots/HP

• • SES 100B = 0.539 ton.knots/HP

• • PHM = 0.734 ton.knots/HP

• • So it could be said that SES 100B was roughly 30% more efficient than the PHM even given its higher maximum speed.

• • The question I have is how do hydrofoils, SES, monohulls, catamarans etc compare when it comes to sustained speed for a given power in a seaway? Also in the February 1985 issue of the Naval Engineers Journal on page 57 Michael Eames presents charts of sustained speed in a seaway for 200 ton and 1000 ton vessels of various types. These charts indicate that the achieved speed of a low length to beam ratio ACV or SES falls rapidly with increasing wave height (from 80 knots in calm water to 40 knots in 2 metre significant wave height), while the notional 200 ton hydrofoil has a far more gradual speed degradation with increasing seastate (remains close to 50 knots in up to 4 metres significant wave height). It would be good to get some more specific data on the relative performance of various craft types as sea state increases.

[Date/Time=01-31-2004 – 9:51 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=581470]
Transport Efficiency of Hydrofoils etc

• • Hi Martin,

• • I agree fully with your comparison of hydrofoils and SES. An interesting document was published called “Hull Form and Propulsor Technology for High Speed Sealift revised: 13 February 1997”. Contact Chris Mckesson for a copy. The whole document is 45MB. Perhaps we can put it in the IHS website? The document compared the transport efficiency of different kinds of craft and their conclusions wer very similar: for state ofthe art vessels of each type, SES and air cushion vehicles offer the best transport efficiency. Hydrofoils were superior to planing, semi-planing and semi-displacement craft for volume Froude numbers (Fnd) of about 3.0. I have compared the hydrofoil-assisted catamaran data I have and it turns out they offer improved transport efficiency compared to regular hydrofoils -about 30% better – and offer improvement in transport efficiency from Fnd=2.20.

• • No data was given in the report for varying sea states and I agree it would be very interesting to know how these compared for differing sea states.

[Date/Time=02-02-2004 – 3:56 AM]

Name:Gunther Migeotte gunther@cae.co.za, [Msgid=582312]
Transport Efficiency of Hydrofoils etc

• • Martin and Gunther

• • Thanks for the feed back. The Speeds quoted in the Naval Engineers Journal for all these vessels (100A, B and PHM were all under quoted by about five knots here and almost everywhere else during their active duty times. Since the diferrential was just about constant accross the board your efficiency comparisons should stay the same.

• • The speed impact of sea state on the vessels was never reported in the public domain with any accuracy. The PHM hydrofoils had by far the smoothest ride. They could maintain foilborne operations through sea state five. (10ft sig wave ht) And with care during operations they could often stay foilborne up well into sea state 6. But if you came off of foils in high sea states 10 ft sig wave and above it was difficult to get them foilborne again. Their hull borne sea keping was excellant as well but at speeds of 10kts or less.

• • The SES and ACVs were also very good in rough seastates. When cushionborne, they would slow down due to the added wave resistance while still at full power through SEA State 5 the same as the PHMs. In Sea State 6 and up they would usually reduce speed for personnel safety. The ride was never as smooth as the PHMs but they still went faster through most of the operating envelope of sea state (0-6).

• • We have very little operational information in even higher sea states, but the SES 200 which was closer to the PHMs in size, did operate at 20+ kts in a Hurricane in the Gulf of Mexico while performing a rescue mission with the Coast Guard when none of the Monohull 100 plus foot Cutters would go out. I can attest to the SES 200’s excellent seakeeping having been aboard for a nonstop voyage from Norfolk to Halifax in early winter. The effect of the ride control system on that vessel was very impressive.

• • Most of the published seakeeping papers on these craft were severly compromised by politics and arbitrary motion limits on the feasible operating envelope. Even the SWATH papers often were conservative.

• • Thanks again

• • Bill White

[Date/Time=02-03-2004 – 8:06 PM]

Name:Bill White whitewn@speakeasy.net, [Msgid=583540]
Transport Efficiency of Hydrofoils etc

• • Gunther and Bill,

• • Thanks for your comments and additional insights on this subject.

• • I am looking at transport efficiency data at the moment as a personal interest which was also prompted by a recent paper which briefly compared hydrofoil supported catamarans against other types of high speed craft.

• • The document on high speed sealift sounds like one that would be worthwhile reading, though my interest is in passenger-only craft at the moment. These are more suited to application of hydrofoils than multi-thousand tonne sealift ships.

[Date/Time=02-10-2004 – 10:22 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=594015]
hull choices

• • ive sailed moths for a while and am considering a new hull for foiling, i only have one question:

• • does a planing hull beat a displacement hull to 10 kts boat speed in lighter wind conditions.

• • what im trying to acheive is lift off in a wind range between 5 – 10 kts and after that i would like a low aerodynamic drag hull. im thinking of something similar to a formula sailboard for its planing but am concerned about the wetted surface area as opposed to a displacement hull similar to a rowing skull. although i only have 11 feet of LOA (width currently runs around 1ft)

• • ps: consider the weight of each hull to be the same.

[Date/Time=02-11-2004 – 9:02 AM]

Name:glen oldfield compositedesign@hotmail.com, [Msgid=594722]
Transport Efficiency of Hydrofoils etc

• • THe sea lift paper is quite good as it covers wide range of ships from passenger vessels right up to the USS “United States” and covers all the different concepts in high speed craft including, semi-displacement craft, planing craft, hydrofoils, air cushion craft, hydroplanes, sea sleds etc. It also gives state of the art examples of each.

• • I would bery much like to see your paper on transport efficiency comparisons of different types of craft. Can you post it on the IHS website?

[Date/Time=02-12-2004 – 11:44 AM]

Name:Gunther Migeotte gunther@cae.co.za, [Msgid=595556]
Transport Efficiency of Hydrofoils etc

• • Gunther,

• • I am still collating and cross checking the vessel performance data where possible. When I have completed it as far as I can go, I will see how it can be made available via the website.

[Date/Time=02-14-2004 – 9:04 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=596590]
Effect of Marine Groth on Hydrofoil Craft

ViewThread

• • I have recently had some discussions with fellow hydrofoil enthusiasts about the subject of marine growth on the foils of hydrofoil craft and how best to protect against this. It has been an aspect of hydrofoil operation that has always been a bit of a mystery to me.

• • On several occasions I have read or heard that it is necessary to regularly clean the foils (and presumably also the hull) if hydrofoil craft are to maintain good take-off and foilborne performance. Without such regular cleaning, I recall reading that the Rodriquez hydrofoils on Sydney Harbour could even experience difficulty taking off with a full passenger load. More recently I have been told that a European operator of hydrofoils prefers to clean the foils every four weeks, either by lifting the craft out of the water or by sending a diver down to do this work underwater. Of course, either option adds to the running expenses and could become costly. A review of hydrofoil operations in the November 1969 issue of Hovering Craft and Hydrofoil magazine also indicated that a Scandinavian operator also docked each hydrofoil every four weeks for two days of cleaning and overhaul.

• • I would be interested to hear whether any rule-of-thumb or more precise means of assessing the impact of marine growth on the performance of a hydrofoil is available?

• • For displacement vessels, a rule-of-thumb allowance for the effect of marine growth is to add 0.1% to the total frictional resistance for each day in service after the vessel has received a fresh anti-foul paint coat. After 6 months, that equates to about 18% additional frictional resistance at a given speed, or more realistically, a speed reduction for a given engine power output. None the less, due to the form of the resistance curve for monohulls and catamarans, this additional drag will probably slow the vessel down in a fairly linear fashion with each day out of dock.

• • In the case of hydrofoils, I can imagine the power margin available to become foilborne when fully loaded could be relatively small and so the craft may struggle to become foilborne with only moderate fouling. To further complicate matters, marine growth may cause a reduction in lift of the foils at a given speed in addition to the increase in frictional resistance. The analogy to this situation is the build up of ice on aircraft wings, which can have a drastic impact on both lift and drag.

• • I am also interested to hear views on the best means of minimising marine growth on the foils so that the period between cleaning of the foil surfaces can be maximised. For example, would highly polished stainless steel foils (as used on many Russian hydrofoils, Jetfoils and some Supramar hydrofoils) offer better resistance to marine growth than the more typical high tensile steel which requires some form of surface coating to prevent corrosion? If a surface coating is to be used, has any information been published on that subject with specific application to use on the foils of hydrofoil craft?

[Date/Time=02-28-2004 – 8:43 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=604934]
rtiEffect of Marine Groth on Hydrofoil Craf

• • Dear Martin, the most useful reference on hydrofoil fouling that I have found is in Marine Technology:

• • Experimental Investigation of {Eneromorpha Clathrata} biofouling on Lifting Surfaces of Marine Vehicles, Marine Technology 38(1) pp31-50, January 2001.

• • I think that paper will answer most of your questions. If you are a SNAME member you should be able to download it off their website.

[Date/Time=03-01-2004 – 10:20 AM]

Name:Gunther Migeotte gunther@cae.co.za, [Msgid=605863]

Hydrofoils: Models      Top

Archived Messages

Count,MessageID,category,ShortTitle,Message,Date,UserName,MsgPswd,Phone,Email,ParentMsgId

“1”,”937916″,”7″,”Water jet system of my RC pegasus ||937916″,”Excellent photos and attachment… an inspiration to others!”,”2005-11-25″,”Barney C Black”,”nopswd”,” “,” “,”934934”

“2”,”936876″,”7″,”‚vater jet system of my RC pegasus ||936876″,”Yoichi,

Congratulations on the successful construction of a waterjet powered hydrofoil model. You may be the first person who has done this!

I see from your photographs that you have made the inlet ducts larger than scale size in order to reduce frictional losses. At some stage please write more about the design and how well it runs. For example, you could tell us about the source of waterjet pump, motor voltage and current and running time of the model.”,”2005-11-22″,”Martin Grimm”,”nopswd”,” “,”seaflite at alphalink.com.au”,”934934″

“3”,”934934″,”7″,”‚vater jet system of my RC pegasus ||934934″,”It introduces the water jet system of the RC pegasus model ship of me who succeeds in surfacing in the first launching introduced in the summer of this year. The secret of the success in my RC pegasus was to have reproduced the research of the pegasus of the thing, and building in the miniaturization and the RC system faithfully. The principle of not the mimicry of the style but the thing was reproduced. The water duct system was researched according to the material of IHS. The water duct system with a little resistance demonstrates the ability of the water jet pump enough. This concludes my report. “,”2005-11-19”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”7″

“4”,”923354″,”7″,”Model Magazines and Plans for sale||923354″,”I put a big batch of hydrofoil magazines with articles on hydrofoil models up for auction on ebay.com. Search for item number: 6985656455. Bidding starts at 6.95 USD. Auction ends Nov-09-05 10:34:41 PST. In addition to the magazines, there are three large, separate full size plans for building hydrofoil models. Both sail and motor powered models are represented, as are display and working models. Some of the working models can be radio-controled; others you just set the rudder for a circular or straight course.

This would be a good instant collection for any modeler interested in hydrofoils. It could also be a resource for a high school science teacher or scout leader interested in offering kids a chance to build and test a hydrofoil as a school project.
“,”2005-10-31″,”Barney C Black”,”poopdeck”,” “,” “,”7”

“5”,”921349″,”7″,”Re; Hegi police Hydrofoil||921349″,”Hello,
If your in europa please mail me at info@dutchhydrofoils.com
about he hegi.
Regards Mark”,”2005-10-27″,”Mark van Rijzen”,”nopswd”,” “,”info@dutchhydrofoils.com”,”916576″

“6”,”920909″,”7″,”Hydrofoil Models||920909″,”This is a website I found with some scale hydrofoil models. Check it out. www.scalespeed.com”,”2005-10-26″,”Rick”,”nopswd”,” “,”1chef987@comcast.net”,”7″

“7”,”920905″,”7″,”Re; Hegi police Hydrofoil||920905″,”If you are interested in selling this boat please contact me.”,”2005-10-26″,”Rick”,”nopswd”,” “,”1chef987@comcast.net”,”916576″

“8”,”917254″,”7″,”Re; Hegi police Hydrofoil||917254″,”This sounds like a good candidate to be offered for sale internationally at auctioni on eBay.com”,”2005-10-20″,”Barney C Black”,”poopdeck”,” “,” “,”916576”

“9”,”916576″,”7″,”Hegi police Hydrofoil||916576″,” I have a Hegi Police Hydrofoil Model , the box is not in the best condition, but the model is in New condition. Everyhting appears to be there along with the Tube of Glue, witch I sure is no longer any good.I would like to sell or trade for other Boats. I’m into Fast attack. Thank you Marc “,”2005-10-19″,”Marc Tieben”,”nopswd”,” “,”marc17mach4@aol.com”,”7″

“10”,”894281″,”7″,”My three RC hydrofoil craft introduction.||894281″,”It introduces each part of my PHM.
It concentrated on the research of the hydrofoil system of the pegasus, not my ruining the function when producing it though I faithfully attempted simplifying by it as a radio controller model, and reproduction. The waterway duct of the hydrofoil that the surfacing power influences is a result of the research.
After all, there was a Japan and United States distances, too and it was impossible though it actually went to the museum and the locale in the United States where the pegasus was put and it had wanted to do a detailed observation.
However, abundant images of IHS served as a reference very much.
“,”2005-09-14”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”888238″

“11”,”889917″,”7″,”My three RC hydrofoil craft introduction.||889917″,”Thank you. Barney san
I will continue, be fresh, produce the RC model of the surprise, and introduce it with
this BBS.
“,”2005-09-07”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”888238″

“12”,”888238″,”7″,”My three RC hydrofoil craft introduction.||888238″,”Awesome!”,”2005-09-04″,”Barney C Black”,”poopdeck”,” “,” “,”884437”

“13”,”884437″,”7″,”My three RC hydrofoil craft introduction.||884437″,”It introduces the work of me current adds the latest work pegasus.
NO,1 Missile boat PG|‚O‚P of JSDMF¡
NO,2¤Boing JET FOIL 929.
NO,3¤USS PHM “PEGASUS”
The original hydrofoil control system that uses both of these all Submarged type hydrofoil boats entire small giros with making by oneself is installed.
“,”2005-08-28”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”7″

“14”,”882561″,”7″,”Gunze Sangyo ||882561″,”I have a few vintage Gunze Sangyo Super Comet Hydrofoil kits for sale if anyone is interested. They are a recent warehouse find. Sale price is $525 + shipping anywhere in the world. Payment by PayPal (we have a business account so you can use your credit card via PayPal as well) or money order. Pictures are below. I am a reputable seller specializing in RC cars and trucks. Hence, the sale of these boats which for obvious reasons do not fit in my collection.

References:
My website (with phone number) is www.InetRC.com

You can view my Ebay feedback here:
http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback&userid=toyinc.com

Most of my private collection and contact information can also be found here:
http://www.tamiyaclub.com/member.asp?id=5861

Pictures of kits for sale:

Thank you,

– Alex
“,”2005-08-24″,”Alex Oliva”,”nopswd”,” “,”Inquiries@InetRC.com”,”7″

“15”,”882560″,”7″,”Gunze Sangyo ||882560″,”I have a few vintage Gunze Sangyo Super Comet Hydrofoil kits for sale if anyone is interested. They are a recent warehouse find. Sale price is $525 + shipping anywhere in the world. Payment by PayPal (we have a business account so you can use your credit card via PayPal as well) or money order. Pictures are below. I am a reputable seller specializing in RC cars and trucks. Hence, the sale of these boats which for obvious reasons do not fit in my collection.

References:
My website (with phone number) is www.InetRC.com

You can view my Ebay feedback here:
http://feedback.ebay.com/ws/eBayISAPI.dll?ViewFeedback&userid=toyinc.com

Most of my private collection and contact information can also be found here:
http://www.tamiyaclub.com/member.asp?id=5861

Pictures of kits for sale:

Thank you,

– Alex
“,”2005-08-24″,”Alex Oliva”,”nopswd”,” “,”Inquiries@InetRC.com”,”7″

“16”,”880301″,”7″,”Re; introduces RC hydrofoil PEGASUS||880301″,”Snap introduction in test Sou of my RC pegasus.
It reports on the snap testing my RC pegasus hydrofoil missile boat
launch.
It is an impellent of the water jet and an image in surfacing Sou.
“,”2005-08-20”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”879209″

“17”,”880300″,”7″,”Re; introduces RC hydrofoil PEGASUS||880300″,”Snap introduction in test Sou of my RC pegasus.
It reports on the snap testing my RC pegasus hydrofoil missile boat
launch.
It is an impellent of the water jet and an image in surfacing Sou.
“,”2005-08-20”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”879209″

“18”,”879209″,”7″,”Re; introduces RC hydrofoil PEGASUS||879209″,”Thank you. !Umi
I made three hydrofoil crafts (submargide foil type) succeed in this pegasus. I do not
stop the challenge to the radio controller technology not exhausted.
This concludes my report.
“,”2005-08-18”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”879094″

“19”,”879208″,”7″,”Re; introduces RC hydrofoil PEGASUS||879208″,”Thank you. !Umi
I made three hydrofoil crafts (submargide foil type) succeed in this pegasus. I do not
stop the challenge to the radio controller technology not exhausted.
This concludes my report.
“,”2005-08-18”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”879094″

“20”,”879094″,”7″,”Re; introduces RC hydrofoil PEGASUS||879094″,”Takahashi san,
Omedeto gozaimasu.

You make this look too easy. I am currently struggling with power vs heat and running time. I believe I have the motor and pump configured. The next step for me is to water cool it and some slight foil changes. I still feel like the boat is struggling to get lift and planing speed.

“,”2005-08-18″,”Umi_Ryuzuki”,”nopswd”,” “,”umi_ryuzuki@hotmail.com”,”878596″

“21”,”878596″,”7″,”Re; introduces RC hydrofoil PEGASUS||878596″,”Thank you1. @Barney san
The development period of about one year was necessary for the modeling
of this pegasus.
My being very satisfied with result before
The pegasus who was the active service is very glad to reproduce the RC
model Sou appearance.
This concludes my report.
“,”2005-08-17”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”877873″

“22”,”877873″,”7″,”Re; introduces RC hydrofoil PEGASUS||877873″,”Fantastic… Great modeling (and photography!)”,”2005-08-16″,”Barney C Black”,”poopdeck”,” “,” “,”877240”

“23”,”877321″,”7″,”introduces RC hydrofoil PEGASUS-2||877321″,”The image of introduces RC hydrofoil PEGASUS is added.
“,”2005-08-15”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”7″

“24”,”877240″,”7″,”introduces RC hydrofoil PEGASUS||877240″,”The brave figuer of the success “PEGASUS” to the RC modeling of PHM1 again.
It introduces RC hydrofoil missile boat PHM1 “PEGASUS” of my latest work.
It is a radio controller model of hydrofoil missile boat PHM1 “PEGASUS” that had
attached to the patrol of the Caribbean sea with USS that I produced in the original
before that introduces here.
The feature of this model ship surfaces by using the hydrofoil by the same water jet
propulsion principle as the thing and starts.
Water is jetted at high speed with the micro water jet pump developed in the original,
it surfaces from the surface of the water with the hydrofoil at the reactionary speed,
and Sou ..
The stability when surfacing achieved a steady running by a small giro by the
hydrofoil automatic control theory originally developed.
1:50 main spec = scale scales of this boat
8.4V?Piezo-electric vibration giro control hydrofoil system and total length = ..820mm..
above equipped with Ni-Cd battery, balsa monocoque hull, 500 faction electric motor,
and original production water jet pump
“,”2005-08-15”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”7″

“25”,”862106″,”7″,”Sparviero update||862106″,”Not as much accomplished as Takahashi-san, but the boat runs.
I need much more speed to even get the hull to plane up and out of the water. More design work on the pump, speed and size. I hope to get it foil borne before the end of the Summer season.

“,”2005-07-17″,”Umi_Ryuzuki”,”nopswd”,” “,” “,”0”

“26”,”851276″,”7″,”scale model hysrofoil, need some advice||851276″,”Hello Divyam,

How are you going with your model in the meantime? Have you started on the hull or selected a motor yet?

If I understood your plans correctly, you will have foils at the front of the model only and the back will not be supported by a foil?

The size of motor you select will depend on the weight of the model and how fast you would like it to go. It is important to keep the weight of the model as light as possible by using light weight materials for the hull and foils. Thin plywood (preferably no more than 2mm) could be suitable and you could also consider using balsa wiid, but in that case you need to be careful to waterproof it carefully with varnish. To propel such a model, an inclined shaft driven directly from the motor is probably most easy. A typical DC electric motor used on electric race cars should be OK if your model is light enough.

If you are able to give us more details of the geometry and expected weight of your model, then that will help when you are seeking further advice. It is a good idea to use a set of kitchen scales to weigh the various parts of the model you are planning to use, for example the hull materials, motor, batteries, propeller shaft, foils, radio control receiver and servos etc. You can then get a better estimate of the expected total weight the model.

Regards

Martin”,”2005-06-26″,”Martin Grimm”,”nopswd”,” “,”seaflite@alphalink.com.au”,”0″

“27”,”848065″,”7″,”Re; Lines/Plans for PHM Pegasus?||848065″,”You can get plans for the Boeing PHMs at
http://floatingdrydock.com/
They have plan view, outboad profile, hull lines, and some detail sheets showing sections, and mechanical. The plans are in Metric and English measurements.”,”2005-06-19″,”Umi_Ryuzuki”,”nopswd”,” “,”Umi_Ryuzuki@hotmail.com”,”0″

“28”,”843240″,”7″,”Re; Lines/Plans for PHM Pegasus?||843240″,”Hi! Markus san
Your Spabiero class model is wonderful.
It was a log of past BBS, there was writing the drawing of the PHM pegasus from Mr. Barney, and
look once, please. MsgidNO,
=790044

“,”2005-06-09”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“29”,”842581″,”7″,”Lines/Plans for PHM Pegasus?||842581″,”Dear Sirs,

I have recently built the Italian Hydrofoil Sparviero as none working
modell in 1/72nd. (see picture following).

(See attached file: Sparviero_frontsideview2.jpg)

I´d like to build next the PHM Pegasus also as none working display modell
scale 1/72nd.

Do you know where to get accurate plans / drawings including line drawings
of the hull?

Best regards

Markus Schott
Germany”,”2005-06-08″,”Markus Schott”,”nopswd”,” “,”Markus.Schott@LBBW.de”,”0″

“30”,”819370″,”7″,”Re; Re; Re; Nikko Shockwave wanted||819370″,”Hi Rod, thanks… there is no wiser voice than the voice of experience. Good advice!”,”2005-04-27″,”Barney C Black”,”poopdeck”,” “,” “,”0”

“31”,”815834″,”7″,”Re; Re; Nikko Shockwave wanted||815834″,”Be careful that u get a good one. I have 3 of them. Only 1 actually gets up on the foils and scoots. The others work ok but the motor does not seem to develop the necessary power. The one for sale on ebay now has a broken propellor. And I don’t think u can change it even if it comes with an extra. I wud be happy to sell you one of mine.”,”2005-04-19″,”Rod Clayards”,”nopswd”,” “,”rodbev@shaw.ca”,”0″

“32”,”814199″,”7″,”Re; Nikko Shockwave wanted||814199″,”There is a Nikko Shockwave up for auction on www.ebay.com right now. Search for item # 5969570866. Starting bid is 99 cents. Auction closes in 5 days. The following link will take you directly to the item listing:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=2564&item=5969570866&rd=1″,”2005-04-16″,”Barney C Black”,”poopdeck”,” “,” “,”0”

“33”,”811816″,”7″,”scale model hysrofoil, need some advice||811816″,”You should definitely read through the historical correspondence in the IHS archives on models. See the following pages:
http://archive.foils.org/modelrc.htm
http://archive.foils.org/models.htm

Also, a number of modelers are members of IHS, so hopefully one or more of them will see your posted message and will respond to you.”,”2005-04-11″,”Barney C Black”,”poopdeck”,” “,” “,”0”

“34”,”811810″,”7″,”Re; Nikko Shockwave wanted||811810″,”I have seen them up for sale at auction on eBay from time to time. I don’t know if you are an eBay member, but if you are, you can set up an automatic search in the “My eBay” section of the website. It will execute your search every day and send you an email if it finds anything new. Your search could be: +nikko +shockwave.”,”2005-04-11″,”Barney C Black”,”poopdeck”,” “,” “,”0”

“35”,”810414″,”7″,”Nikko Shockwave wanted||810414″,”Does anyone know where I can get a Nikko Shockwave model hydrofoil? I’ve searched the web but it seems that this product is not currently available. “,”2005-04-09″,”Jason”,”nopswd”,” “,”Jasonracer33@hotmail.com”,”0″

“36”,”809683″,”7″,”scale model hysrofoil, need some advice||809683″,”Respected Sir/Madam,

I am Divyam Nagpal residing in New Delhi , India and was keen on seeking information on hydrofoils.I have developed designs of a scale model of a hysrofoil and would like some advice on it.
My design is basically based on a rigid hull with two foils on either sides and a meachanism following the principle of aerofoil in the front for lift.It would be about 200 cm in length and 15 cm wide at the centre. Firstly i would like to know what kind of motor would be suitable.Also i would like to know what material can be used as a hull.I have already obtained the R/C set and is ready to be installed.
I would be highly obliged if you could answer soon as this project is already delayed by a long time.

Regards
Divyam”,”2005-04-07″,”Divyam”,”nopswd”,” “,”divyamnagpal515@hotmail.com”,”0″

“37”,”805186″,”7″,”Robbe F-1 Skiboot||805186″,”I just happened upon a kit of the Robbe F-1 Skiboot high speed hydrofoil. Has anyone built this kit. I know it is not like most of the hydrofoil kits since it is not scale but is there any interest in this kit? I also have a model by Hydrofoils Inc. (not making models any more). Has anyone built this one either?”,”2005-03-30″,”Rick”,”nopswd”,” “,” “,”0”

“38”,”794425″,”7″,”radio controller high-speed SEStype ship||794425″,”Thank you. !@Mr. Bill White san
I am producing the radio controller model of PHM Pegasus besides this SES type
now. It introduces it with IHS again when launched.
This concludes my report.
“,”2005-03-11”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“39”,”794416″,”7″,”Re; R/C high-speed SES ship||794416″,”Thank youI. Mr. Barney.
I can be going to keep offering an interesting topic to the IHS member in the future. Please expect it in the future.
Moreover, please sometimes look at URL that treats my work. There is a possibility that a new work is recorded. The image of the aircraft and the hovercraft was up-loaded recently.
This concludes my report.
“,”2005-03-11”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“40”,”792471″,”7″,”TUCUMCARI||792471″,”Hello,

For the past 26 years I have served as a project supervisor creating museum exhibits in honor of U.S. vets and those of our allies. Some of the venues I have done work for include the USS Intrepid Sea Air Space Museum and the Museum of Polish Military Heritage in America, both in New York City. Load my name Mike Dobrzelecki into a Google Search Engine and you’ll see examples of some of my work on two continents over the years.

I saw your name & email on the IHS website and hope you can provide some help on a research project concerning the Tucumcari PGH-2.

I built the old Aurora kit when it first came out in the late 1960’s early 1970’s (?) and not too long ago picked up a derelict unpainted damaged built-up, as well as a pristine complete kit still in the original box. I even still have some parts from my original build model.

My intent is to build one ‘flying’ and one in the water with its struts and foils folded up and possibly write a good article on the Tucumcari.

I have everything available on the internet for this fascinating hydrofoil, as well as, the old Sea Clasics issue with the Tucumcari on the cover. Recently, I obtained a copy of the History Channel Mail Call episode with the world’s most famous D.I. narrating exquisite video of the this fast-fighting boat in action – great footage, BTW. I have even manage to track down some of its crew for personal interviews. Most frustratingly, the crew I talked to so far all stated that their photos went missing during moves over the years.

I am looking for more photos including details of the interior, the exterior fit on the cockpit/bridge and upper surface of the hull and an answer to what’s in the large opening aft of the .50 cals and masts/antennae. I would also like to track down some more crew and any other books or naval history magazine articles on the the Tucumcari. Any leads would be appreciated.

Mike Dobrzelecki
3040 Clayton Street
Easton PA 18045
“,”2005-03-07”,”Mike Dobrzelecki “,”members”,” “,”Michael_Dobrzelecki@fwc.com”,”0″

“41”,”791941″,”7″,”radio controller high-speed SEStype ship||791941″,”Great pictures of your model.

I got to see the full sized version about a year ago as the Vessel visited the US for joint exercises with the US Navy. It was a very impressive vessel. It was the largest Foam sandwich fiberglass ship that I have ever seen. The workmanship was supurb throughout.

Go to IHS web site at http://archive.foils.org/restore.htm

Under Restoring a PHM in Missouri There is a briefing on the Norwegian Surface Effect Ship (SES) Fast Patrol Boat (FPB) KNM SKJOLD where you can download: skjold brief.pdf
to download a skjold Presentation with photos.

It was twice as efficient as any of the US Navy’s proposed new LCS.

The Model is very impressive as well. Does it have a working model RIB like the big one does?

Bill White”,”2005-03-07″,”Bill White”,”nopswd”,” “,”whitewn@speakeasy.net”,”0″

“42”,”791409″,”7″,”R/C high-speed SES ship||791409″,”This is a very interesting and sophisticated model at
http://d.hatena.ne.jp/skyex/20050112

Thank you Yoichi for posting this. Several IHS members have worked on other Advanced Marine Vehicles (AMVs) besides hydrofoils and will be interested in this!”,”2005-03-05″,”Barney C Black”,”poopdeck”,” “,”barney@alum.mit.edu”,”0″

“43”,”790044″,”7″,”PHM Model Plans||790044″,”There have been many requests for plans to model PHMs. There is an interesting auction of 1:107 scale model PHM plans on eBay, Item number: 5960815691, ending March 7. This is only a one page sheet with three views, not much detail, but a start. Description says the plans are from Morrison Repla-Tech by Robert C. Morrison. I googled that and got one hit, a posted thread. Excerpt: “REPLA-TECH INTERNATIONAL P.O.Box 461000 Cole Branch Los Angeles, CA 90046-1000 Alain Proteau now owns Repla-Tech. Good source of scale documentation on your favorite airplane. 3-view drawings and photos galore! Bob Morrison’s plans range from his own to imports. Especially good coverage of race planes. Catalog $ 2.50. More than one person has tried to phone Alan to no avail. Try a post card first before risking yer $2. 50. Keep me posted. SCALE MODEL RESEARCH is now handling the Repla-Tech collection of photos.””,”2005-03-03″,”Barney C Black”,”poopdeck”,” “,”bcblack@erols.com”,”0″

“44”,”784147″,”7″,”radio controller high-speed SEStype ship||784147″,”The third radio controller high-speed ship series bounce. Stately missile boat
Skyol launch

The radio controller model production of a high-speed ship is started and

Northern Europe Norway naval forces this time for , five ..earliness.. years.

It is the state-of-the-art, high-speed missile boat { Skyol }

With the hovercraft named SES = Sarfasefectoshipp (surface of the water effect boat)

It has the high speed and the control stability in the high Bullitt type of the

catamaran ship.

¡ It is a light hull made of composite materials and a water jet bimotored of
the gas turbine drive.

¡ Thorough Stealth shape is deeply moved by the fjord camouflage there is power
and with the hull and the feature.

¡ There is fan air intake for surfacing on the deck.
¡ Equipped with two storage missile container eight2
¡ This hull is reproduced by 1:50 scales.
800mm in the total length

2250 weight = G

Equipped with 500 faction electric and drive self-made water jet device

Niccad and lithium Polymer battery drive

>>Please ..following.. refer to URL of publishing for the article and the image
of details.

URL:http://d.hatena.ne.jp/skyex/20050112″,”2005-02-19″,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“45”,”770509″,”7″,”vs8 pictures||770509″,”I am looking for any pictures of the vs8 particularly on the prop rudder area – I can not contact challenge publications to see if they had an old copy of the scale modeler magazine from july 82 which showed photos of the 32nd parallel kit”,”2005-01-25″,”David Short”,”nopswd”,” “,”davidsh@internode.on.net”,”0″

“46”,”768757″,”7″,”Re: simple hydrofoil plans?||768757″,”Here are some pages of interest:
http://www.home-taylor.freeserve.co.uk/content/experimental%20models.html
http://www.home-taylor.freeserve.co.uk/content/mk1%20hydrofoil.html
http://www.home-taylor.freeserve.co.uk/content/rapier%20page.html
http://archive.foils.org/modelrc.htm
http://archive.foils.org/gallery/models.htm
http://archive.foils.org/popmags.htm#mod

I note that on eBay, there is a recurring offer to sell a set of CDs with model boat plans. The current notice is item #5950983858, titled SIXTY THREE Model Boat Plans on Four CD Set. One of the models is described as “Electric Hydrofoil.”
“,”2005-01-22″,”Barney C Black”,”poopdeck”,” “,”bblack11@cox.net”,”0″

“47”,”760909″,”7″,”propose simple model hydro foil||760909″,”Hi! Conor Davies san
I am a modeler of the radio controller ship of Japan.
I propose the idea of the hydrofoil craft that remodels the electric model boat marketed to you.
The hydrofoil craft is Shupramarl type with good stability. I think that it can easily make the hydrofoil craft when it is this method. However, a slight balance of the area, the angle, the impellent, and the weight of the hull of the hydrofoil is necessary for the hydrofoil craft of the model. It is necessary to make it run making it, and it adjusts, it cuts, and to try in the result. I think that it also studies the student by the process.
PS :BBS server of this is up-loaded and the image cannot be up-loaded by full!!. Therefore, please give your E-mail Address.
The image is sent to that.
This concludes my report.

“,”2005-01-08”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“48”,”760908″,”7″,”propose simple model hydro foil||760908″,”Hi! Conor Davies san
I am a modeler of the radio controller ship of Japan.
I propose the idea of the hydrofoil craft that remodels the electric model boat marketed to you.
The hydrofoil craft is Shupramarl type with good stability. I think that it can easily make the hydrofoil craft when it is this method. However, a slight balance of the area, the angle, the impellent, and the weight of the hull of the hydrofoil is necessary for the hydrofoil craft of the model. It is necessary to make it run making it, and it adjusts, it cuts, and to try in the result. I think that it also studies the student by the process.
PS :BBS server of this is up-loaded and the image cannot be up-loaded by full!!. Therefore, please give your E-mail Address.
The image is sent to that.
This concludes my report.

“,”2005-01-08”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“49”,”760904″,”7″,”propose simple model hydro foil||760904″,”Hi! Conor Davies san
I am a modeler of the radio controller ship of Japan.
I propose the idea of the hydrofoil craft that remodels the electric model boat marketed to you.
The hydrofoil craft is Shupramarl type with good stability. I think that it can easily make the hydrofoil craft when it is this method. However, a slight balance of the area, the angle, the impellent, and the weight of the hull of the hydrofoil is necessary for the hydrofoil craft of the model. It is necessary to make it run making it, and it adjusts, it cuts, and to try in the result. I think that it also studies the student by the process.
“,”2005-01-08”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“50”,”760245″,”7″,”simple hydrofoil plans?||760245″,”Hello,

I am a physics teacher in Harrogate, England. Some of my students have been asking about building a model hydrofoil boat, powered by some batteries and a small electric motor.

Our main difficulty is finding simple, understandable plans for the hydrofoil part itself, (materials to use, angles of attack, dimensions, position on hull etc.)

The boat will be fairly small and the hydrofoils will have to be simple, i.e. no moving surfaces.

Is this type of project possible? Are the hydrofoils easy to construct? Do such plans/instructions exist?

I would be grateful for any advice you can give or any websites you can point me to for information.

Ideally I would then send the students off to research further and come up with a project plan.

Thanking you in advance for any assistance.

Regards

Conor Davies”,”2005-01-06″,”Conor Davies”,”members”,” “,”conor.davies@ntlworld.com”,”0″

“51”,”755708″,”7″,”Thank you! Barney||755708″,”Thank you! Barney san. — I am very glad to put a picture on BBS with your help . The sequel of the Pegasus manufacture is also due to be reported from now on.”,”2004-12-25″,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“52”,”755619″,”7″,”Photos: PHM Model in Progress||755619″,”Click the following link to see photos of this model under construction: http://www.exigent.info/PHMyoichi.pdf”,”2004-12-24″,”Barney C Black”,”poopdeck”,” “,”bcblack@erols.com”,”0″

“53”,”755397″,”7″,”Jetfoil Dimensions, Plans, Profiles||755397″,”I have posted information about Jetfoil dimensions, plans, profiles, fittings, hull access openings, etc. that may be of interest to people who want to model this vessel. The information shows differences between Model 929-100 (Hull Numbers 001 thru 0010) and 929-115 (0011 and on). Go to the following webpage to find the link: http://www.exigent.info”,”2004-12-23″,”Barney C Black”,”poopdeck”,” “,”bcblack@erols.com”,”0″

“54”,”754247″,”7″,”Local Interest in Hydrofoil/Portland, Oregon||754247″,”I am interested to form a local activity group here in Portland, Oregon.
This can be informal and maybe those people interested could meet once a month. My interests are as follows:

1) Historical Issues
2) Theoretical and computational aspects related to
hydrodynamics and hydrofoils in particular

This message was motivated by the most recent article on model development of radio controlled hydrofoil boats. In particular the one by Aimee Eng and Cliff Shaw.
Please feel free to contact me at:
dpsace21@aol.com

With regards, Axel Mainzer Koenig”,”2004-12-20″,”Axel Mainzer Koenig”,”nopswd”,” “,”dspace21@aol.com”,”0″

“55”,”753597″,”7″,”Under RC Pegasus construction||753597″,”The radio control hydrovane patrol guided missile (Pegasus) which I am building now is introduced. I think that I wants to reproduce sailing of Pegasus of an active-service time with S= 1:50 and the hull RC made from a full length =800mm balsa. It is a brave figure again !”,”2004-12-18″,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“56”,”735242″,”7″,”Re: Introduction of my R/CHydrofoilsModels ||735242″,”Hello1 Wolfgang Lam san
Your mail was read.
Thank you for having my radio control jetfoil praised.
and Although I have understood your intention generally, there is a
point which is not known well yet. There is a question. Do you want to
develop an amphibious, completely new hydrofoil type radio control
automobile model like the image data of a trial product? . Or do you
want to develop the radio control scale model of the jetfoil high-speed
pure Boeing ship? . I have not done understanding which it is yet.
Please give me the reply of the above question. Above
— “,”2004-11-09”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“57”,”735236″,”7″,”Re: Introduction of my R/CHydrofoilsModels ||735236″,”Hi! Wolfgang Lam san
I to the E-mail by which it came from you put once again the contents of the reply taken out to Fri and 05 Nov 2004 repeatedly here last week.
>
Above
— “,”2004-11-09”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“58”,”735168″,”7″,”Re: Introduction of my R/CHydrofoilsModels wo||735168″,”Dear Yoichi Takahashi san

So excited receiving your message, it is so great meeting you Hydrofoil Jetfoil lovers. In our mail, you mentioned that you have replied last Saturday. I think I missed it, did you send directly to my e-mail account or post it on IHS message board ? Do you mind send it over again, are there more photos/video that you would like to share with us ?

We are a small radio toy manufacturing company and have been manufacturing such for Taiyo and Tamiya. Recently we want to develope a Hydrofoil or Jetfoil toy, of course, cost is a very important factor as our marketing sector is in toys but not hobbies that we would be excited if we can find working partners for consultation or joint venture.

If you have any suggestions, we would be delighted to hear.

Thanks and rgds,

Wolfgang Lam
“,”2004-11-09″,”Wolfgang Lam (Hong Kong)”,”nopswd”,” “,”wavecon@netvigator.com”,”0″

“59”,”734680″,”7″,”JETFOIL model||734680″,”Good evening!
. Wolfgang Lam san It is very interested in your project.
Since the mail from you was contained in my mail last weekend, although I was allowed to ask a question, has it arrived? Since there was writing when it visited the IHS board today, it is replying also by this IHS. Now, development of my RC jetfoil model took in three years. Many were repetitions of an experiment, a try, and an error. All rejection type hydrofoils are very difficult things, such as stability, maneuverability drivability, and a propultion system, so much. I was able to acquire some physical numerical values and know-how required for a design by this development. If your picture is seen, some subjects can see. Selection of a water jet system etc. needs a design and technical choosing the optimal for the area of in-its-hands wings, form, a control system, and propultion. Moreover, weight, the hydrovane for stability reservation, the size of a hull, etc. serve as a conclusive factor. The theory and the solution method of a model are a method of at a model. Above”,”2004-11-08″,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“60”,”732651″,”7″,”Re: Invite modeller on Jetfoil project||732651″,”Your photos are most interesting. Take a look at the Flying DUKW on my webpage at http://www.exigent.info/FlyDUKW.pdf”,”2004-11-04″,”Barney C Black”,”poopdeck”,” “,”barney@alum.mit.edu”,”0″

“61”,”732178″,”7″,”Source of RC Hydrofoils||732178″,”I see used RC Hydrofoils come up for auction on www.ebay.com from time to time.”,”2004-11-03″,”Barney C Black”,”poopdeck”,” “,”barney@alum.mit.edu”,”0″

“62”,”732176″,”7″,”Re: Introduction of my R/CHydrofoilsModels wo||732176″,”Mr. Yoichi Takahashi san

My name is Wolfgang Lam from Hong Kong, I saw your beautiful Jetfoil model picture and your introduction, they looked brilliant.

We would like to invite you participate in our project of re-modelling an amphibian toy car to a Jetfoil using centrifugal fan for the waterjet propulsion system.

The car measures about 360 x 140 mm, estimated payload is around 1100 gm with motors, servos, battery etc.

I am attaching a photo for your quick browsing and if you are interested in know more, I can send you movie file of size about 10 MB.

Looking forward to hear you again.

Tks n Rgds”,”2004-11-03″,”Wolfgang Lam (Hong Kong)”,”nopswd”,” “,”wavecon@netvigator.com”,”0″

“63”,”732116″,”7″,”Jetfoil Hydrofoil modelling||732116″,”Hi, all Jetfoil Hydrofoil lovers We are looking for helper to re-constructing an amphibian toy car into a Jetfoil, it measures about 360 x 140 mm, estimated payload is 1100 gm with batteries, motors, servos. Attached is a slide/video clip which shows real one flying and the car standing on its struts. Thank you “,”2004-11-02″,”Wolfgang Lam (Hong Kong)”,”nopswd”,” “,”wavecon@netvigator.com”,”0″

“64”,”731709″,”7″,”Invite modeller on Jetfoil project||731709″,”Please see attached for another photo of the (ex amphibian car) for rebuilding into a Jetfoil.

Thanks.

Wolfgang Lam”,”2004-11-02″,”Wolfgang Lam (Hong Kong)”,”nopswd”,” “,”wavecon@netvigator.com”,”0″

“65”,”731698″,”7″,”Invite modeller on Jetfoil project||731698″,”Hi, Jetfoil/Hydrofoil lovers

We would like to seek a helper for building a Jetfoil model from a toy ship hull (an ex-amphibian car) using a centrifual fan as the propulsion system, the toy ship hull measures 360 x 140 mm, estimated payload with batteries, motors, servos etc is 1100 gm.

We can send you the hull, the fan, and required motor for assembling.

Please see attached photos of the ship hull with the centrifual fan and posted on its 3 struts.

Thank you”,”2004-11-02″,”Wolfgang Lam (Hong Kong)”,”wavecon”,” “,”wavecon@netvigator.com”,”0″

“66”,”722798″,”7″,”Looking for.||722798″,”Is there anyone that is selling RC Hydrofoils?”,”2004-10-13″,”Jim Myers”,”nopswd”,” “,”jrm16@zoomtown.com”,”0″

“67”,”721717″,”7″,”hydro foils for kiteboard||721717″,”I have recently competed in Weymouth speed week on a kitesurf kite and standard board and have posted a speed of 30.97 knots.
I wish to increase the speed and the only thing I believe is stopping me is the boards resistance. I wish to try out hydrfoils on my board that will lift the board approx 5-10 cm off the surface of the water. I have thoght about using hydrfoils off model boats.
The hydrofoils will have to be made of metal I think. Has anyone got any suggestions of where I could get such things from or made?
The board I am using is 130cm long and 37cm wide.
I look forward to your suggestions
Richard Gowers
Uk”,”2004-10-11″,”Rich Gowers”,”nopswd”,” “,”info@surf-skate-ride.co.uk”,”0″

“68”,”709950″,”7″,”Re: Tucumcari Model e-bay||709950″,”Here is a third Tucumcari Model.
It says a couple pieces are missing.
Item Number 5921479181

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=2590&item=5921479181&rd=1″,”2004-09-16″,”Aimee Eng”,”nopswd”,” “,”Umi_Ryuzuki@hotmail.com”,”0″

“69”,”708393″,”7″,”Another Tucumcari Sept 13th, 2004||708393″,”Here is another e-bay auction for one of these model kits.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=4248&item=5920973946&rd=1

or Item Number 5920973946″,”2004-09-13″,”Aimee Eng”,”nopswd”,” “,”umi_ryuzuki@hotmail.com”,”0″

“70”,”703922″,”7″,”Re: board ease of use||703922″,”Aimee

We have tried to make to make the board a little simpler to use. If we messed up and made it worse, let me know what bothers you and we can fix it.

Bill White
Moderator”,”2004-09-03″,”Bill White”,”foilsadm”,” “,”whitewn@speakeasy.net”,”0″

“71”,”703833″,”7″,”Tucumcari Model e-bay||703833″,”If anyone is interested, there is an Aurora model of the Tucumcari on e-bay.
Item number 5918286328

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=2590&item=5918286328&rd=1

Aimee

(did this bbs get more difficult to access since I was last here?)”,”2004-09-03″,”Aimee Eng”,”nopswd”,” “,”Umi_Ryuzuki@hotmail.com”,”0″

“72”,”694827″,”7″,”want to take lease russian hydrofoil||694827″,”Falcon sea trans company would like to lease russian built hydrofoil if u have any information please mail me as soon as possible”,”2004-08-15″,”Ruman Barua”,”nopswd”,” “,”rum27m@yahoo.com”,”0″

“73”,”689422″,”7″,”Introduction 2 my R/CHydrofoilsModels||689422″,”Konbanwa Takahashi san,

Here are the fiberglass struts after one week of work.
The Struts came out very well and I am happy with the work.

The right strut is still solid, with the foam core still in place.
The left strut has had the foam melted out with acetone.

I will reinforce the uptake with a vertical piece of styrene, This will also help keep the water running straight as it passes through the strut.

Mata aimasho,

Aimee Eng.”,”2004-08-04″,”Aimee Eng”,”nopswd”,” “,”Umi_Ryuzuki@hotmail.com”,”0″

“74”,”688884″,”7″,”Introduction 2 my R/CHydrofoilsModels||688884″,”I have decided to try to fiberglass the rear struts.
Here are the foam cores fiberglassed and vacuum bagged.
“,”2004-08-03″,”Aimee Eng”,”nopswd”,” “,”Umi_Ryuzuki@hotmail.com”,”0″

“75”,”684342″,”7″,”Introduction 2 my R/CHydrofoilsModels||684342″,”konbannwa! Aimee.Eng
san
. The thin aluminum board which constitutes the strike rat is pasted up by epoxy adhesion material. Since it is very difficult, aluminum welding is not used. Above”,”2004-07-25″,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“76”,”683895″,”7″,”Introduction 2 my R/CHydrofoilsModels||683895″,”Konbanwa Takahashi san,

How did you assemble the aluminium plates?
Is the aluminium TIG welded or epoxied(glued) into shape?

I am Sailing boats this weekend, So no new work until next week.

Mata ne.”,”2004-07-24″,”Aimee Eng”,”nopswd”,” “,”Umi_Ryuzuki@hotmail.com”,”0″

“77”,”683816″,”7″,”Introduction 2 my R/CHydrofoilsModels||683816″,”konnichiwa!. Aimee Eng san
The struts is made with the 0.3‚‚ thin aluminum board in order to serve as a waterway duct. Foil is shaving and making ramin wood to the wings type.
“,”2004-07-23”,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“78”,”683143″,”7″,”Introduction 2 my R/CHydrofoilsModels||683143″,”konbanwa Takahashi san,

The temperature is 26-32C here.
The planking is 1.5mm balsa wood. After sanding the hull lost 20 g but I am trying to smooth the hull right now so it may stay about 290g when finished. Hopefully your diagrams and pictures will keep this project from taking three years to complete.

I am not sure I understand the joint development question.
Is that you helping me develop my model? I welcome your help.
Also, I would be happy to help anyone start or build a model if it is within my means.

I am thinking that I will build the jet pump not buy one.
How did you build your struts?
Are the struts and foils balsa?
“,”2004-07-22″,”Aimee Eng”,”nopswd”,” “,”Umi_Ryuzuki@hotmail.com”,”0″

“79”,”682771″,”7″,”Introduction 2 my R/CHydrofoilsModels||682771″,”CONBANWA. Aimee Eng san!

This place, intense heat continues every day, and, as for Japan, it is very hot (39-degree Centigrade). You live. How are
and the temperature at the time? . It is leaf surprise at the speed of your modeling speed! Thank you for showing a beautiful hull. Judging from a hull size, the almost same size as my hydrovane patrol guided missile is conjectured. Getting, if you say, a jet pump and a hydrovane think that they are difficult to be sure. Finishing as lightly as possible is important for a hull. Mind should attach to seldom become weight over just because it thinks a feeling of a scale as important. By the way, is the Planck wood of a hull a balsa? The jet pump spent also for me to research and development in three years. Although the jet pump for models out of which electric power comes was looked for among the world, there is anywhere, and it was made personally. [ no ] Then, although it is a proposal, how is collaborating on your on-going R/C MODELE-SUPABIERO class by two persons? Mutual favorite technology is shared and it is international joint development. If you avoid, since it may offer the technology of an electric jet pump and I will also want to have subject nature as a modeler which plays an active part internationally.
Please inquire.”,”2004-07-21″,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“80”,”682646″,”7″,”Re; RHS 160 F- Foil Arrangement||682646″,”Well apparently there are some file limits for accounts so if you need a larger file of the RHS140 plans e-mail me, and I will send you the best copy I have.

Also, I have not extrapolated any frame/station drawings for the 140 series yet, so that information is not available at this time.”,”2004-07-21″,”Aimee Eng”,”nopswd”,” “,”Umi_Ryuzuki@hotmail.com”,”0″

“81”,”682641″,”7″,”Re; RHS 160 F- Foil Arrangement||682641″,”How about an RHS 140
(Courtesy of Martin Grimm)

Perhaps you can modify the superstructure, length and beam to match the RHS 160″,”2004-07-21″,”Aimee Eng”,”nopswd”,” “,”Umi_Ryuzuki@hotmail.com”,”0″

“82”,”682329″,”7″,”Introduction 2 my R/CHydrofoilsModels||682329″,”Ohaiyo Takahashi san,

Building a boat hull is the easy part. (Boat hull wa muzukashii ku nai.)
Building the jet pump and foils will be difficult. I would like to make this electric powered. Any assistance will be greatly appreciated. (Jet pump to foils wa taskete onegaishimasu.)

The Sparveiro class is
Length x width x draught
23m x 7m x 1.5m

The model is
637mm x 185mm x 40mm
Currently the rough fiberglass hull weighs 288.5g
I will sand it and finish the hull today.

Aimee Eng

Here is todays hull image
“,”2004-07-20″,”Aimee Eng”,”nopswd”,” “,”Umi_Ryuzuki@hotmail.com”,”0″

“83”,”682268″,”7″,”Introduction 2 my R/CHydrofoilsModels||682268″,”CONBANWA! Aimee ENG san

Thank you for having the picture of your spa BIERO class shown. By the way, is the speed of your work very Quicly? . Would you teach the size of the scale of a hull, and the full length of an actual ship, if it avoids? Is it engine? Is it an electric motor drive? . Above”,”2004-07-20″,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

“84”,”682267″,”7″,”Introduction 2 my R/CHydrofoilsModels||682267″,”CONBANWA! Aimee ENG san

Thank you for having the picture of your spa BIERO class shown. By the way, is the speed of your work very Quicly? . Would you teach the size of the scale of a hull, and the full length of an actual ship, if it avoids? Is it engine? Is it an electric motor drive? . Above”,”2004-07-20″,”yoichi takahashi “,”nopswd”,” “,”skyex@triton.ocn.ne.jp”,”0″

2004

Archive; Model Kits, TUCUMCARI/Others

Click below to Open

http://archive.foils.org/models.htm
[Date/Time=03-24-2002 – 3:15 PM]

Name:webmaster@foils.org [Msgid=237685]
Archive; Radio-Controlled Hydrofoil Models
Click below to Open

http://archive.foils.org/modelrc.htm
[Date/Time=03-24-2002 – 3:22 PM]

Name:webmaster@foils.org [Msgid=237690]
Flying Keelboat

• • microSAIL! (

www.microsail.com

• • ) ia about to introduce a revolutionary RC sailing model: the aeroSKIFF. This boat is the first production model sailboat to be offered with a canting keel which is very fast: 0 to 52 degrees in one second. Most revolutionary of all is that the boat is also available with hydrofoils(!): one on the daggerboard just ahead of the canting keel strut and one on the rudder(thats right–only two!). She uses a variation of Dr. Sam Bradfieds altitude control system. So far as we know the aeroSKIFF is the FIRST BALLASTED KEELBOAT–either model or fullsize to fly on fully submerged foils(or any other kind of foils). We are pursuing a patented version of this model technology for use on full size boats like Open 60’s…

• • If you have ever heard of or seen –and can substantiate it-another keelboat on foils please contact Doug Lord at:

lorsail@webtv.net

• • The aeroSkiff pictures will be posted on our website in a month or so…

[Date/Time=04-21-2002 – 12:56 PM]

Name:Doug Lord lorsail@webtv.net, [Msgid=249867]
PHM Radio Controlled Model

ViewThread

• • For those interested in the model of the

USS AQUILA

• • (PHM-4) by Ronald Swart, Look at:

http://home.wanadoo.nl/~hydrofoils1/phm.htm

• • .

• • When more info shows up, I will make a update.

[Date/Time=05-12-2002 – 7:56 AM]

Name:Mark van Rijzen dutchhydrofoils@wanadoo.nl, [Msgid=258425]
PHM Radio Controlled Model

• • Additional photos provided to IHS by Mark

[Date/Time=05-22-2002 – 9:02 PM]

Name:Barney C. Black webmaster@foils.org, [Msgid=262735]
Test Rig for R/C Model CURL CURL

ViewThread

• • See the image of my model R/C hydrofoil with a ‘test rig’ catamaran owned by a friend of mine (pictured). Actually, the catamaran has been used for solar boat races in recent years but is ideal for towing models. The idea was that this could be used to do experimental tests of transverse stability of the model while foilborne on a calm day. We just have not got far enough with the idea yet! Far more ideal of course would be to perform the tests in a towing tank! — Martin Grimm (

seaflite@alphalink.com.au

• • )

[Date/Time=05-27-2002 – 6:35 PM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=264347]
Wing In Ground Effect Models

• • Wing In Ground Effect Models

• • Dear W.I.G enthusiast

• • This is just a note to tell you that I have added some more photos of WhizzyWig models to my web site, which you might like to see.

• • Visit :

http://www.home-taylor.freeserve.co.uk/index%20ekranoplan%20man.html

• • or go direct to the WhizzyWig Gallery :

http://www.home-taylor.freeserve.co.uk/whizzywig1/whizzywig%20gallery.html

• • to see the pictures.

• • Also a new video clip of the prototype WhizzyWig XGE, flying in XGE mode (eXtreme Ground Effect) has been added to the Video section of The Wig Page, visit:

http://www.se-technology.com/wig/

• • If you would like a set of plans to build your own WhizzyWig model see the details at :

http://www.home-taylor.freeserve.co.uk/whizzywig1/whizzywig%20plans.html

• • , or email me and ask for an order form for the WhizzyWig XGE Plans Pack.

• • I hope you enjoy the photo.

• • Regards

• • Graham Taylor

home.taylor@virgin.net

• • Date=2002-05-29 for Graham Taylor

[Date/Time=05-31-2002 – 1:29 PM]

Name:Graham Taylor home.taylor@virgin.net, [Msgid=265985]
How Small Can You Go?

ViewThread

• • Is it possible to make a working foil less than 10mm from leading edge to trailing edge that would be suitable for a small saing model say <40cm long overall? If it is possible what would be the best cross section and angle of the foil and would a T foil configuration work at this size? Also to make it at all effective how light would the model have to be?

[Date/Time=07-12-2002 – 4:25 PM]

Name:Matthew Lingley matthew_lingley@hotmail.com, [Msgid=281832]
How Small Can You Go?

• • Matthew,

• • I think it would be possible to build a sailing hydrofoil model of only around 40cm long and with hydrofoil chord lengths of less than 10mm, but you would have to take a lot of care to make it work, especially to keep its weight down to the bare minimum. I can’t imaging anyone else would have made such a small sailing hydrofoil before.

• • A more workable size for a sailing model would be like the MicroSail F3 (see:

www.microsail.com

• • ) which is 1.4 metres (55.75 inches) long. Building to that scale means shaping and assembling the components doesn’t become so fiddly.

• • If you were to attempt a 40cm long model of a similar arrangement to the F3, then the weight budget you have to work with can be estimated by scaling down from particulars of the F3 model. This model has a weight of up to 8.2 lb or 3.7 kg. If you try to build a model only 28% of the size of the F3, then its weight would have to be about 86 grams!

• • An inverted T foil system as on the F3 required foil control to regulate the angle of attack of its foils. The weight of such control linkages alone would cause problems. As such, for a small sailing hydrofoil you would be far better off using surface piercing hydrofoils that don’t require foil angle control (explore our website for more details of the differences between folly submerged and surface piercing hydrofoil types).

• • Furthermore, the model would have to be free sailing as even the lightest radio control equipment would make it too heavy.

• • A final aspect to consider: As boats become smaller, the frictional resistance coefficient of their hulls (or foils) becomes higher. This means that although they have less wetted surface area that is subject to friction, they still suffer from a relatively larger amount of resistance in proportion to their weight.

• • Although a smaller model may seem more manageable to build, in this case you would be better off adopting a larger model as there is a better chance you will be able to make it work well.

• • I don’t have any good tips to offer you about the best foil cross section and angle except that the best lift to drag ratio of most aerofoils and hydrofoils is achieved at a relatively small angle of attack (around 3-4 degrees?) and you should be aiming for that angle.

• • I wish you well with your hydrofoil modelling.

[Date/Time=07-13-2002 – 3:36 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=281949]
Thunderstreak Collection

ViewThread

• • I visited your site, and was surprised to see a reference to the old ThunderStreak model on your page at

http://archive.foils.org/gallery/models.htm

• • ! I thought you might get a kick out of my collection.

[Date/Time=07-25-2002 – 5:13 AM]

Name:Mark dcpmark@adelphia.net, [Msgid=286201]
Thunderstreak Collection

• • Mark

• • thanks for the great photo

• • Bill White

[Date/Time=07-27-2002 – 5:04 PM]

Name:bill white whitewn@speakeasy.net, [Msgid=287225]
PHM model up for sale!!

ViewThread

• • Announcement!!!

• • A friend of my is selling his PHM model.

http://home.wanadoo.nl/~hydrofoils1/phm.htm

• • This is a Radio Controlled model of the USS Aquilla.

• • The buyer will not get the model only,but also the mould to make a new PHM hull.

• • And a lot of information.(photo’s drawing enz..)

• • The model is build according to the original drawings of the Boeing company.

• • In a scale of 1:30,

• • this makes her length 135 cm,

• • beam 48 cm,

• • and the weight is 14 kg.

• • Hull is made of kevlar,deck,deckhouse and foils are made of aluminium.

• • Need some detail work.

• • Asking price is $3000,- USD,

• • That is for:

• • Model,mould,photobook,drawings and shipping.

[Date/Time=08-07-2002 – 4:26 PM]

Name:Capt Mark van Rijzen dutchhydrofoils@wanadoo.nl, [Msgid=292219]
Attached File  “afullside~JPG.zip” – size 26604   Click Here To Download
PHM model up for sale!!

• • WoW! I’ve contacted the owners (and perspective owners) of the remaining PHM’s. Ever thought about “Super Sizing” and buying one of the originals….?

[Date/Time=08-10-2002 – 12:41 AM]

Name:Dan Schmidt gse2schmidt@hotmail.com, [Msgid=293848]
Test Rig for R/C Model CURL CURL

• • I recent received an e-mail enquiry seeking more details about the ?test rig? boat and whether it could be used for model testing work.

• • The photo in the original posted message on this subject was taken earlier this year and is the only time we have attempted to tow the hydrofoil model using the catamaran so far. It was really just an idea prompted by the fact that it is difficult to gain access to towing tank facilities (though the hydrofoil model in the photo has been tested in the towing tank at the Australian Maritime College in Launceston as a research activity some years ago).

• • The idea of using a boat as a means to test scale models for assessment of their performance is not a new one. I have video footage that shows that a Volga sports hydrofoil (see the website for details of this craft type) was once used by Rostislav Evgenievich Alekseev (again, see website for more info) and the Central Hydrofoil Design Bureau in the former Soviet Union to test the characteristics of Wing-in-Ground-Effect craft (Ekranoplans) using small scale models. In that case, the model was simply towed from a bar projecting out from the side of this small 6 seater hydrofoil and was towed via a thin towline. These tests were probably conducted to examine flight stability and other such issues. A more dedicated self-propelled model test platform was designed by the Gdansk Ship Research Institute in Poland and is described in the 1974-75 issue of Jane’s Surface Skimmers. This was known as the Badacz II and was of a hydrofoil supported catamaran configuration with the towing rig installed at the bow. It was apparently used for testing of hydrofoil and hovercraft models. Taking the idea to extremes, Boeing used the hydroplane ‘Aqua-Jet’ to test hydrofoil models at high speed, reportedly up to 100 knots. I am also aware that a consulting naval architect in Australia has used a larger boat for testing of scale models of conventional vessels and others have probably also done so.

• • Our catamaran called ?Ampcat? is not highly instrumented. On the occasion of the trial run towing the hydrofoil model, we had a small hand held GPS unit on board. It could measure speed over ground fairly well (but how accurately, I can’t say). We had also fitted a very basic Pitot tube that was roughly marked off with speeds in half-knot increments. The instrument was simply manufactured from a length of Perspex tube heated and bent into an L shape with the lower opening facing forward into the oncoming water flow and the upper end open to atmospheric pressure. The stagnation pressure at the front of the tube results in a column of water within the Pitot tube, which rises above the mean water level. This in theory should measure speed through the water but again; I can’t say how accurate it is in practice. The towing force could be measured using a simple spring balance (more tension in the tow line results in extension of a spring) combined with a calibrated scale to make it possible to read off the tow force. This is a simple visual scale and naturally if the boat and model are not in calm water, the tension will fluctuate and readings will be difficult to record. The intention was to mount a video camera near the model to record pitch or roll motions if the tests are conducted in waves. The approach was to do everything on a shoestring budget as this is only a personal interest rather than a commercial enterprise.

• • Ampcat can comfortably reach 6.5 knots via a battery powered electric outboard motor. If it is towing a 1:20 scale model as in the photo, that speed corresponds to a full scale speed of the hydrofoil of about 29 knots based on Froude Number.

• • Testing of scale models of ships and boats to estimating resistance of the full scale vessel is established practice in the maritime industry, however you need to be quite familiar with scaling techniques and extrapolation methods to reliably predict the full-scale performance. That is even more complicated in the case of a hydrofoil than a conventional vessel. Designers, including in the hydrofoil business, have been ‘burned’ by not getting their model scaling techniques quite right. There are no shortages of craft that have under-performed on full-scale trials despite what the model tests may have indicated.

[Date/Time=08-11-2002 – 6:18 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=294217]
PHM model up for sale!!

• • I am interested in seeing a built model — not buying one. Anyone have one living on the eastern portion of USA?

[Date/Time=08-11-2002 – 7:32 PM]

Name:Gerry Levine gerrymega@aol.com, [Msgid=294364]
PT-50 Model

ViewThread

• • I am Japanese, and I am a fan of hydrofoil boats in Japan inland sea. I made a model of hydrofoil boat PT-50.

[Date/Time=08-18-2002 – 1:08 PM]

Name:Katsuhiro Sakai ksakai@orange.ocn.ne.jp, [Msgid=297592]
PT-50 Model

• • Katsuhiro

• • The detail of the model is impresive. It is very hard to tell from your enclosed pictures that we are looking at a scale model.

• • Congratuations on your fine workmanship.

• • Bill white

[Date/Time=08-18-2002 – 10:12 PM]

Name:Bill White whitewn@speakeasy.net, [Msgid=297759]
PHM model up for sale!!

• • Why do you ask about owning a model in northeastern US?

[Date/Time=08-18-2002 – 11:30 PM]

Name:Dan Schmidt GSE2Schmidt@hotmail.com, [Msgid=297791]
Bras D`Or Model Question

ViewThread

• • I am a master seaman instructor at the fleet school in Victoria, BC.

• • I belong to a Radio Control boat club and am looking for a little

• • information or pictures on Bras D’Or. I wanted to know if there are rudders on the aft stabilizers, or is the ship steered by just the front foil? I have just completed a four foot CPF with working lights and radars. I have been told by numerous persons that the FHE 400 could not be made to work. I hope that you can help me out.

[Date/Time=08-20-2002 – 4:45 AM]

Name:C.T. Thomas Thomas.CT@forces.ca, [Msgid=298311]
Bras D`Or Model Question

• • The IHS has a large Section on the Bras D`Or at

http://archive.foils.org/brasdorp.htm

• • It indicates that the bow foil was used for foilborne and hullborne steering.

• • The The Defence R&D Canada – Atlantic’s mandate is to conduct research and development in Underwater Sensing and Countermeasures, Naval Command and Control, Air Platforms, Naval Platforms etc. They did trails on the Bras D`Or in the 60’s and 70’s. There is some information on their web site in the History section.

http://www.atlantic.drdc-rddc.gc.ca/history/achievements_e.html

• • See also: Back to the Canadian Navy – Postwar Fleet

http://www.hazegray.org/navhist/canada/postwar/brasdor/

• • Also: If you go to IHS main home page and use the IHS Site search engine you will come up with 14 items addressing Bras D`Or both technical and historical.

• • Hope this helps.

• • Bill White

[Date/Time=08-21-2002 – 9:45 AM]

Name:Bill White whitewn@speakeasy.net, [Msgid=298902]
Bras D`Or Model Question

• • Following up on what Bill has already said, the whole bow foil assembly rotated about a vertical stock similar to a rudder stock. This was supported within a Teflon coated spherical bearing near the keel. This arrangement allowed the bow foil incidence angle to be adjusted by a hydraulic ram positioned just below the weather deck in the bow area. A steering actuator was positioned at the level of the spherical bearing with the control linkage projecting out of the Port side of the hull below the hullborne waterline.

• • To help with building a model, the book “The Flying 400” by Thomas G. Lynch would be very useful to you. This has many good photos and diagrams. Full details are available on the IHS website “Popular Books on Hydrofoils” page. Of course you could also visit the real thing on display in Quebec to see all the details first hand!

• • All the best with the modelling project.

[Date/Time=08-22-2002 – 9:48 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=299478]
Looking for RC Coke Hydrofoil

ViewThread

• • I am looking for the RC Coca-Cola Hydrofoil that was made in Japan. I can’t seem to find them anywhere. I believe they were made back in the ealy 90’s. They were not sold in US. Can anyone help?? Will pay a finders fee of $200 if someone can locate one for me to buy. Thanks.

[Date/Time=08-28-2002 – 6:26 PM]

Name:Barry Miller barry@mindspring.com, [Msgid=302505]
Looking for RC Coke Hydrofoil

• • I had not heard of these models, but I will post your message in our announcements page to give you a second shot at connecting with someone. If you have a photo or sketch of this model, we would like to have it for our photo gallery.

[Date/Time=09-04-2002 – 8:58 AM]

Name:Barney C Black webmaster@foils.org, [Msgid=305241]
PT-50 and PT-20 Models (Manly)

ViewThread

• • There are detailed plans of the PT 50 Hydrofoils in the State Archives at Kingswood NSW.

• • I built a 1:25 scale static model of the Manly II PT 20 Hydrofoil (see below). I have the complete plans of both the Japanese version & my version. I also have full plans of the Hydrofoil “Fairlight”.

• • I would love to build scale models of both the Dee Why & Curl Curl Hydrofoils.

[Date/Time=09-14-2002 – 7:42 PM]

Name:Alex lord_barrington@smartchat.net.au, [Msgid=309777]
PT-50 and PT-20 Models (Manly)

• • When the Sydney hydrofoils were decommissioned by the State Transit Authority I made enquiries at their Balmain workshops about whether surplus plans could be made available, even if just to copy. I didn’t have success at the time, though there was a hint that they would at least not just ‘ditch’ the information. I am pleased to hear that at least the PT 50 hydrofoil plans are available in the state archives and some day I may obtain a copy for my own information. I wonder whether the same applies for the PT 20, RHS 140 or RHS 60F types and the alternative variant of the PT 50 (since some had the raised wheelhouse arrangement).

• • The Japanese (Hitachi) had a variety of superstructure configurations for the PT 20s they built under license to Supramar. For Manly they incorporated the panoramic windows. Others were built with ‘standard’ windows throughout. For other variants there was a small exterior area for use by a limited number of passengers behind the wheelhouse.

• • The plans I prepared for my ‘Curl Curl’ model were based on fairly small scale published arrangement drawings of the type, suitably modified to reflect the peculiarities of the superstructure of ‘Curl Curl’ itself. These plans were further refined by reference to a collection of photos I had taken of ‘Curl Curl’. I have never properly completed the plans for use by others, as in fact I have many loose templates and sketches of details from which I also worked. My intention was always to finish off those plans as a basis from which others could have an easier start into building a hydrofoil model. One day I would like to put in the time to finish the drawing work.

• • Of course, I would also be keen for someone to take on a project to model ‘Dee Why’ or ‘Palm Beach’ since I am unaware of anyone who has taken on those as model subjects (both these two had the raised wheelhouse similar to ‘Curl Curl’ but instead were PT 50s). I am sorry to say I have fewer photos or postcards of those two hydrofoils (none of my own), let alone drawings of that version. You could however adapt the ‘Fairlight’ drawings you have managed to obtain (presumably from the state archives?) with the help of any photos you can get.

[Date/Time=09-14-2002 – 7:49 PM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=309781]
PT-50 and PT-20 Models (Manly)

• • Hello,

• • I am a Hong Kong people.

• • I was interseting in this model for few years.

• • I have to plan for build it,but here have not enough information for build it ,also I not have quility to build it.

• • I want to ask you that will you sell it ?

[Date/Time=09-22-2002 – 4:08 PM]

Name:Anthony Choi chixkei@netvigator.com, [Msgid=313028]
PT-50 and PT-20 Models (Manly)

• • Hello,

• • I am a Hong Kong people.

• • I was interseting in this model for few years.

• • I have to plan for build it,but here have not enough information for build it ,also I not have quility to build it.

• • I want to ask you that will you sell it ?

[Date/Time=09-22-2002 – 4:09 PM]

Name:Anthony Choi chixkei@netvigator.com, [Msgid=313029]
PT-50 and PT-20 Models (Manly)

• • Hello,

• • I am a Hong Kong people.

• • I was interseting in this model for few years.

• • I have to plan for build it,but here have not enough information for build it ,also I not have quility to build it.

• • I want to ask you that will you sell it ?

[Date/Time=09-22-2002 – 4:12 PM]

Name:Anthony Choi chixkei@netvigator.com, [Msgid=313030]
About PT-50 model

ViewThread

• • Now I am looking for a model of PT-50 Hyfrofoil.It is made in Japan model company which call Gunze Sangyo.If anyone can locate me to buy the model or directly sell to me .I can give a higher price for you.

• • P.s.If anyone can find it ,please send a e-mail to me.

• • Thanks.

[Date/Time=10-12-2002 – 8:38 AM]

Name:Antony Choi chixkei@netvigator.com, [Msgid=322522]
About PT-50 model

• • Try eBay. It is amazing how many out of production model kits can be found there.

[Date/Time=10-13-2002 – 11:18 AM]

Name:Greg Bender glbender@erols.com, [Msgid=322911]
PHM / Jetfoil Model Plans

• • I’m the person with the Jetfoil mouldings, of HMS Speedy 929-320 and the commercial 929-115-100. I’ve been working on the jetfoil model for many years, and I will soon be able to have a model fully working with ACS (My models of Jetfoil and PHM are 4ft / 1.2 m long).

• • I worked with Martin Seymour on his model back in 1985. Jetfoil or PHM require the same type of system for automatic control. I have now sourced the outlets for Jetfoil control and hope soon to be testing. Back in 1985, there was a lack of knowledge of the systems for control, but these systems are now available. I expect to have some positive news in the spring of 2003 so watch this space. Also available will be mouldings for PT50, PT75, RHS 150/160/200 + PHM, complete and ready to run.

• • I can confirm that I have all of the workshop manuals of Boeing Jetfoil and drawings. The ACS has been in my blood for years, and I have had a major breakthrough in the past few days.

• • I am able to give advice on all aspects of Jetfoil and PHM for modeling.

[Date/Time=11-02-2002 – 12:03 PM]

Name:Peter Cahill struts@talk21.com, [Msgid=332437]
Microsail Link

ViewThread

• • Was surfing your web site and thought your photos were excellent.

• • I sail radio controlled 12 Meter yachts in Orlando Florida. A friend and designer who lives here has developed and produced a Tri-Foiler which would be a good thing to add to your collection and web site.

• • Take a look at

http://www.microsail.com
[Date/Time=11-22-2002 – 5:14 AM]

Name:Tim Hopkins talltim@cfl.rr.com, [Msgid=341790]
Microsail Link

• • Thanks Tim

• • We appreciate the information and will add information of our links to other sites on our IHS Web pages. It looks pretty impressive.

• • Bill White

[Date/Time=11-23-2002 – 6:41 PM]

Name:Bill White whitewn@flash.net, [Msgid=342527]
600mm hydrofoil

ViewThread

• • I’m a 23 year old sailmaker at North Sails New Zealand. I have been sailing for 18 years. I have been sailing IOM’s for a couple of years. I’m interested in building a 600mm hydrofoil. I know this seems small but there is a competition at work. The rules 600mm max length, 1050mm from top of the rig to bottom of the keel, and it must be a monohull. I have been searching the internet for information about hydrofoils, I’m interested in finding out more about altitude control system but am finding it hard to find something. Are there any tips, hints or anything that would be helpful?

[Date/Time=01-29-2003 – 9:34 PM]

Name:Scott Beavis sjbeavis@hotmail.com, [Msgid=369322]
Re; 600mm hydrofoil

• • You should also browse through our email archives on the following page:

http://archive.foils.org/modelrc.htm

• • . In particular you may be interested in two postings entitled “Modelbuilding Scaling Lessons Learned”, one by Martin Grimm, the other by Ernst Zemann ( you will have to scroll down a bit to find these as they date back to December 2000.

• • Good luck with your project, and by all means send us some photos and text for our newsletter when you are done.

[Date/Time=01-29-2003 – 9:36 PM]

Name:Barney C Black webmaster@foils.org, [Msgid=369323]
Re; 600mm hydrofoil

• • You might want to go to:

www.rcmultihulls.com

• • the site for the multiONE(One Meter) website. I know you’re talking about a monohull but there is good info on foils on that site.

• • So far no one has succesfully sailed a hydrofoil monohull KEELBOAT though I am right on the verge of doing so with a boat called “aeroSKIFF”. It has a canting keel for stability and features a mainfoil on the daggerboard and a foil on the rudder–two foils total.(also see:

www.monofoiler.com

• • for full size monohulls(without ballast keels) on foils.

• • Another project almost ready for testing is our “microMOTH(working name) that consists of a lightweight narrow 36″ by 4″ main hull and, again, a foil on the daggerboard and one on the rudder and NO ballast keel! For stability this boat uses a 28” wide “rack” with buoyancy pods on the ends to support the boat at rest. There is a debate as to whether it is a monohull or not but I say it is since the buoyancy pods do NOT support the boat when it is sailing.For sailing stabiity up to 3lb is moved across the rack very quickly…

• • Very basic parameters that I know work are: around 50-60 sq. inches of sail for each square inch of main foil area; above a 150 sq.in.of sail per lb. of model displacement. Rudder foil about 1/2 area of main foil; mainfoil +2.5 degrees, rudder foil zero. Altitude control on my first models is MANUAL using a flap on the main foil; the ONE Meter site I mentioned has a description of a version of Dr. Sam Bradfields altitude control system I used (with permission) on the F3 hydrofoil model.

• • Good luck and keep us informed! You can contact me directly at:

lorsail@webtv.net

• • if you’d like.

[Date/Time=01-30-2003 – 8:47 AM]

Name:Doug Lord lorsail@webtv.net, [Msgid=369498]
Re; Re; 600mm hydrofoil

• • Further to the message that Barney had sent you, it would also be worth your while looking at the MicroFoiler F3 model at the MicroSail! website:

http://www.microsail.com

• • This 1.4m model trimaran hydrofoil was developed by Doug Lord with the help of Sam Bradfield. The concept could possibly be further scaled down to 600mm and adapted to a monohull arrangement with a cross beam to support the forward pair of foils, if that is permitted. It may however be more practical to adopt surface piercing foils as on the full scale French l’hydroptere (see:

http://perso.wanadoo.fr/terrasse.web/hydroptere800.html

• • ) as these are self stabilizing and so would not need the tiny height sensor wands that you would require with a scaled-down version of a fully-submerged foil design such as the F3.

[Date/Time=02-02-2003 – 11:45 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=371006]
12 Inch Radio Controlled Hydrofoil

ViewThread

• • This 12-inches in length hydrofoil model was given to me in the early 1960s when I was about 14 years old. The mini hydrofoil was a Vacuum-form hull with plastic foils. The boat was intended to be driven by a simple motor and 2 cells. That was about the time when the James Bond 007

Thunderball

• • film was first shown. The same type of hydrofoil flew in the movie.

• • At that time no radio-control equipment or rechargeable cells of such small size were available yet. On one occassion I was amazed to see another boy free-run the same boat with 8 AA cells flying.

• • I kept this boat as it was for another 30 years before getting around to adding R/C capability. I do not remember which might be the manufacturing company but I am sure it was a Japanese one, and it might be the Model Craft Clipper Co.

• • In the 1990s, I was having fun with mini 1/24 Tamiya cars and later 1/200 Mini-japanese destroyers, radio-controlled of course. One day the childhood dream of making the mini-hydrofoil flies came back, so I started working.

• • First I reinforced the PVC hull with a very thin layer of glass-epoxy. Hull,deck, and cabin were assembled with the boat opened from the canopy of the cabin so as to give the boat 15mm more critical side-wall. Radio-control gears were mounted in the rear section of hull, which was made completely water-proof. A Tamaya black-180 mini motor was soldered to the shaft-tube and geared to the shaft running a KNK 27mm plactic 2-blade propeller. The boat took six 270mah or six 500mah (short-type) cells. The foil was redesigned with adjustable collet soldered first to a thin copper plate then glued to the plastic foil with AA glue. The rudder sat left away from the propeller wash.

• • Today, the boat has been untouched since 1996, and there is still one problem to solve – to make it turn left.

[Date/Time=02-02-2003 – 1:03 PM]

Name:Peter Cheung cckkww@hotmail.com, [Msgid=371040]
Re; 12 Inch Radio Controlled Hydrofoil

• • Thanks for the photos… I especially like your model test basin. It is not quite as fully featured as the model basin at David Taylor Research Lab, but it does the job, and the price is cheap!

[Date/Time=02-02-2003 – 1:08 PM]

Name:Barney C Black webmaster@foils.org, [Msgid=371043]
Re; 12 Inch Radio Controlled Hydrofoil

• • Very cool model. I would love to see it run. It’s hard to tell from the low quality pictures, does the model have a rudder, or any kind of steering gear? You said you can’t get it to turn left. What appears to happen when you try?

• • Thanks for sharing, Scott Smith

[Date/Time=02-04-2003 – 7:05 AM]

Name:Scott Smith ssmith@syntheon.com, [Msgid=371915]
See and Hear it Run

• • You can now see (and hear) it run. Peter Cheung kindly provided two video clips of his model in action. These clips are in *.mpg format; each is approx. 1 meg in file size and lasts for 6 seconds.

• • Clip #1:

http://archive.foils.org/cheung1.mpg

• • Clip #2:

http://archive.foils.org/cheung2.mpg
[Date/Time=02-07-2003 – 8:07 PM]

Name:Barney C. Black webmaster@foils.org, [Msgid=374282]
Buyer (and Seller) Beware

ViewThread

• • Some of the commercially produced hydrofoil RC model kits have been long discontinued and are now quite rare and valuable. Recently, several people who posted messages here were contacted directly by email with an offer to sell a rare such model at a price in the hundreds of dollars. The individual making this offer was not a member of IHS and is not known to us. The offer may be perfectly legitimate. The price may be perfectly fair… IHS has no way of knowing, and we do not recommend or endorse products and services. This seems a good opportunity to remind our valued members and correspondents to be wary of responding to any unsolicited offer to sell valuable merchandise by e-mail. If, due to distance or other reason, you have no way to meet the seller under safe circumstances and see the merchandise before you buy, then you would be ill advised to provide personal information, give out your credit card number, or mail a payment in the hundreds of dollars in such a situation. For the legitimate seller with a valuable model or other item to sell who does not have an established internet business, I would recommend that you sell the item locally where people can view the item in a safe public location before buying. Or you can list your item for sale on eBay or other web-based auction site and earn the confidence of your potential buyers by offering to deal through the payment escrow feature offered on such sites. As the saying goes, “Let the Buyer Beware!” The legitimate seller should heed this warning also, and sell by a safe means… you do not want to get a bad check or a stolen credit card number in return for your valuable model!

[Date/Time=02-17-2003 – 7:18 AM]

Name:Barney C. Black webmaster@foils.org, [Msgid=379512]
plese hepl with hydro

ViewThread

• • hi, friends, im looking for help to find cad or paper panes of hydro named Miss Budweiser, i need for made an 1/8 rc model, can anyone help me??? i heve been looking for more than 1 month but nothing, please send me mail at

armadillo@teleline.es

• • we have an modelmakers building, prototipes, enginner, etc if any one need our services, contact or visit my web page

www.galeon.com/armadillo

• • best regards

• • fernando palacio

[Date/Time=02-25-2003 – 5:48 AM]

Name:fernando palacio edreira armadillo@teleline.es, [Msgid=384434]
Re; Buyer (and Seller) Beware

• • thanks , you are rigth, i surf the web and find many photos of this hydro, and several details, now im draving cad plans to my model,wil be post here the result when finish, a lot of work, but really enjoy them, regards from spain.

• • fernando palacio

[Date/Time=02-26-2003 – 4:56 PM]

Name:fernando palacio edreira armadillo@teleline.es, [Msgid=385462]
MISS BUDWEISER RC Model Plans

• • I have not heard of anyone offering plans, but I can see why you want to build your own. The commercially manufactured R/C model of

MISS BUDWEISER

• • is quite expensive. One just sold on eBay (item # 3116608353) for USD276.00. Here is the description taken from the eBay listing:

• • “Miss Budweiser style hydrofoil remote control boat, 42 inches long, 14 inches wide with K&B 7.5cc outboard and all accessories. Radio is a Futuba Magnum Sport FP-T2PB with a 75.690 chip set, receiver is a Futuba FP-R112JE 2 channel with a futuba FP-S148 indirect drive servo and a system 2000 1/4 scale TS-72 servo. Also included is the starter and spare leg housing and prop . Great summer hobby , I haven’t run this machine but was told it will do over 50 MPH on smooth water!!”

[Date/Time=02-26-2003 – 8:02 PM]

Name:Barney C. Black webmaster@foils.org, [Msgid=385555]
PT 50 Found

ViewThread

• • I thought I’d write just to let you know that after 22 years of searching ( and 3 years since posting my original email on IHS) I have finally managed to find a Super Comet PT50 model. I was approached by email in response to my posting here, and I took a risk – after 22 years I thought it was worth it, and the model arrived today. It was found in a model shop in Italy, and it looks as though all of the parts are there including the assembly instructions and decals. I’ll post some pictures when completed – hopefully in a month or so. Thanks for your help in finding the model.

[Date/Time=02-26-2003 – 8:19 PM]

Name:Nick James ncjames2@cwgsy.net, [Msgid=385567]
Re; plese hepl with hydro

• • Dear Fernando,

• • The IHS is the International Hydrofoil Society. Miss Budwieser is a hydroplane. Hydroplanes are a form of racing boats sponsored by the American Power Boat Association. I would suggest you look at their web pages. I suspect obtaining drawings would be difficult since these racing teams do not want to disclose any of their secrets to maintain an edge on their competitors.

• • S. Arima, IHS member

[Date/Time=03-01-2003 – 10:07 PM]

Name:S. Arima ihs@foils.org, [Msgid=387384]
Re; About PT-50 model

• • Dear Mr.Anthony CHOI,

• • Are you still serious of buying PT50 model hydrofoil which was manufactured by Gunze Sangyo? I have one untouched still in box.

• • Yours Sincerely,

• • Peter CHEUNG

• • 4th March,2003

[Date/Time=03-04-2003 – 9:47 AM]

Name:Peter CHEUNG cckkww@hotmail.com, [Msgid=388816]
Re; Re; About PT-50 model

ViewThread

• • yes I still interest it.

• • my email:chixkei@netvigator.com

[Date/Time=03-04-2003 – 11:41 AM]

Name:Anthony Choi chixkei@netvigator.com, [Msgid=388901]
Re; PT 50 Found

• • again

[Date/Time=03-04-2003 – 11:24 PM]

Name:Peter CHEUNG cckkww@hotmail.com, [Msgid=389427]
Attached File  “pt50movie5sec~MPG.zip” – size 884204   Click Here To Download
Re; Re; Re; About PT-50 model

ViewThread

• • Dear Mr. Anthony CHOI,

• • Please see photos of model PT50 in Box.

• • Peter CHEUNG.

[Date/Time=03-05-2003 – 10:17 AM]

Name:Peter CHEUNG cckkww@hotmail.com, [Msgid=389631]
Attached File  “PT50BOXVCDPHOTO~MPG.zip” – size 18532   Click Here To Download
Re; Re; Re; About PT-50 model

• • Photo again with box opened and boat seen inside.

[Date/Time=03-05-2003 – 11:07 AM]

Name:Peter CHEUNG cckkww@hotmail.com, [Msgid=389661]
Attached File  “PT50BOXOPENWITHBOATPHOTO~MPG.zip” – size 16208   Click Here To Download
Re; Re; Re; Re; About PT-50 model

• • I can’t view this video.

[Date/Time=03-05-2003 – 11:58 AM]

Name:Anthony Choi chixkei@netvigator.com, [Msgid=389691]
PT-50 Model FRECCIA dORO

• • I live in Messina, Italy. I have built a PT 50 model in wood, to 1/20 scale. It’s propulsion is electric, but it can be equipped with two diesel motors. The hydrofoil model is an exact reproduction of the famous

FRECCIA D’ORO

• • . For more information, contact me!

[Date/Time=03-07-2003 – 7:05 PM]

Name:Vincenzo Annuario enzo.annuario@tin.it, [Msgid=391268]
RC Model Hydrofoil Plans Found

ViewThread

• • I looked on various websites for a good/damaged Shockwave R/C model that I could reverse engineer and scale up in size, but I was unable to find anything at all. However, when searching the web for a starter/plan I did find through Traplet Publications a plan for a hydrofoil. It is the “Rapier” by Graham Taylor previously featured in “Marine Modelling Magazine” (also Traplet) The plan number is MAR2392, and it is also possible to acquire the copy of Marine Modelling Magazine through this company (issue no. 69 December ’92) that gives a build overview and other usefull building infomation. The plan and magazine combined cost about ?10. I’ve had mine on the go for about a two weeks now (I’m a patient builder!) and it’s coming along nicely.

[Date/Time=04-08-2003 – 8:34 PM]

Name:Mike Keen miket.keen@tiscali.co.uk, [Msgid=412916]
Re; RC Model Hydrofoil Plans Found

• • Hi Mike, information about this magazine issue and several others devoted to hydrofoil models is posted in our correspondence archives at

http://archive.foils.org/popmags.htm#mod

• • . The website for Traplet publications is:

http://www.traplet.co.uk/

• • . Graham Taylor’s most interesting website is at

http://www.home-taylor.freeserve.co.uk/index%20ekranoplan%20man.html

• • . You should not hesitate to contact him through his website if you have questions. Of course we would like to have photos and lessons learned for our newsletter when your model is perfected.

[Date/Time=04-08-2003 – 8:41 PM]

Name:Barney C Black webmaster@foils.org, [Msgid=412926]
Condor I Model Kit

ViewThread

• • Thought I’d just send you a picture of the completed Condor 1. The kit has been great fun to put together and was very well engineered despite the age of it. Trials have been extremely successful with the boat going straight up on its foils and even turning without coming off – a problem which I believe these models suffered from. I think the modern equipment I’ve used has helped – the motor is more efficient as is the electronic speed controller – and the weight has been reduced as well.

[Date/Time=06-02-2003 – 8:27 PM]

Name:Nick James ncjames2@cwgsy.net, [Msgid=446033]
Re; Condor I Model Kit

• • Thanks Nick. We were not using the automated BBS yet when you first contacted IHS about wanting a model kit. Therefore I will reproduce below some of your previous correspondence as background:

• • “[26 Feb 03] I thought I’d write just to let you know that after 22 years of searching ( and 3 years since posting my original email on IHS) I have finally managed to find a Super Comet PT50 model. I was approached by email in response to my posting here, and I took a risk – after 22 years I thought it was worth it, and the model arrived today. It was found in a model shop in Italy, and it looks as though all of the parts are there including the assembly instructions and decals. I’ll post some pictures when completed – hopefully in a month or so. Thanks for your help in finding the model.”

• • Note that for those interested in hydrofoil models, there is a wealth of interesting correspondence in the pre-BBS archive on our page at

http://archive.foils.org/modelrc.htm
[Date/Time=06-02-2003 – 8:32 PM]

Name:Barney C Black webmaster@foils.org, [Msgid=446038]
Russian Model Wanted

• • We are in the high speed ferry business and have developed catamarans using fixed hydro supportive foils. I am looking for a completed model of a early hydrofoil, preferably Russian. Can you guide me as to where I may find this?

• • Hydrocruiser Ventures, Box 438, Roadtown, Tortola, British Virgin Islands.

http://www.hydrocruiser.com
[Date/Time=06-02-2003 – 8:45 PM]

Name:Raymond Kalley RKalley@hydrocruiser.com, [Msgid=446043]
PT 50 Advice Needed

• • I have one of these kits that I am looking at putting together. Do you have any more details about what you used and why? Could you send some pictures of the inside and outside of the boat?

[Date/Time=06-13-2003 – 5:44 AM]

Name:Kelly Cunningham kelly.cunningham@hrc.utah.edu, [Msgid=451950]
Tucumcari Model fror sale

• • There is an unbuilt Tucumcari model from Aurora, on Ebay at the moment.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3135555936&category=2590

• • Malin

[Date/Time=06-17-2003 – 12:26 PM]

Name:Malin Dixon gallery@foils.org, [Msgid=454231]
PT50 model wanted

• • I am after a Model of a PT50. Can anyone help? I require one for static viewing or a working model if anyone has one. I know they are hard to get but who knows what is out there.

[Date/Time=06-29-2003 – 6:40 AM]

Name:Adrian Moitie Adrianmoitie@aol.com, [Msgid=461561]
model of phm 5

ViewThread

• • trying to fine a model of phm-5 can any one help.

[Date/Time=06-30-2003 – 5:28 PM]

Name:roger barker from old phm-5 roger050@yahoo.com, [Msgid=462322]
Re; model of phm 5

• • Check out this site,it’s not the PHM-5 but the Phm-4.

http://home.wanadoo.nl/~hydrofoils1/phm.htm

• • The USS-Aquilla(Radio Controlled model).

• • The model is build in a scale of 1:30,this makes her length 135 cm, beam 48 cm, and the weight is 14 kg.

• • The model is build according to the original drawings of the Boeing company.

• • In that time there where no propulsion jets fore such big models.

[Date/Time=07-02-2003 – 2:39 PM]

Name:Capt M van Rijzen dutchhydrofoils@wanadoo.nl, [Msgid=463453]
Re; model of phm 5

• • White Ensign Models offers a 1/350 model PEGASUS kit. The kit consists of of a cast resin hull, with white metal and photoetched parts. The kit includes comprehensive assembly and painting instructions. You could build that, change the number, and tweak the details main deck and above. The website is at

www.whiteensignmodels.com

• • . The postal address is: White Ensign Models, Gardeners Cottage, Cowarne Court, Lower Eggleton, Ledbury, Herefordshire, HR8 2UF, U.K. The cost of the model is in British Pounds equivalent to about $35.50 USD, including air shipment worldwide.

[Date/Time=07-03-2003 – 5:31 AM]

Name:Barney C Black webmaster@foils.org, [Msgid=463803]
Helo Blades as RC Model Foils

ViewThread

• • I intend to build an R/C model hydrofoil from scratch. Reading your website increases my interest in building my model. The “only” problem is the foils. Does anyone know how to use blades from an RC model helicopter as foils on a hydrofoil boat model? The effect of the slow running water must be similar to the air at a helicopter.

• • What do you think?

[Date/Time=07-28-2003 – 6:55 PM]

Name:Tom Delling stennis@t-online.de, [Msgid=477683]
Re; Helo Blades as RC Model Foils

• • Hello Tom,

• • Your idea to use the blades from RC model helicopters for a hydrofoil model project makes good sense. This lask weekend I had a look at some model helicopters and also thought the blades could be suitable for RC hydrofoil models. Some of the higher performance model helicopter blades are now built up using a foam core and thin carbon fibre skins. These would be tough enough to cope with the occasional impact if used on a hydrofoil model. Some of the potential drawbacks of using helicopter model blades may be:

• • 1. They seem to have a chord length of 50mm or more, even for the smaller helicopter models. You would therefore need to consider building a fairly large scale hydrofoil model for these blades to be in reasonable proportion to the rest of the model.

• • 2. They have a quite large thickness to chord ratio, perhaps 10% or greater. This is more than typical required for the profile for a model hydrofoil. Although this should not be of much concern, there is likely to be a drag penalty in comparison to thinner section foils.

• • 3. They typically appear to have symmetrical profiles (same shape for top and bottom of blade). You would get a somewhat better lift to drag ratio using a cambered foil shape.

• • 4. Some of the less expensive blades still use balsa wood cores. Such blades would probably swell up and distort if immersed in water for a longer time.

• • An alternative that I am aware has been used successfully by some hydrofoil modellers is to purchase an aluminium ‘crescent’ extrusion. These are usually used for applications such as joint strips between carpet and lino flooring in houses. You may be able to obtain short lengths of such sections from a hardware shop or metal retailer. They come in widths (chord lengths) between about 30mm and 45mm.

• • If you go ahead and make use of model helicopter blades for your hydrofoil model, please report back on how they perform. Using them would certainly reduce the time and effort needed to build a hydrofoil model.

[Date/Time=07-29-2003 – 10:11 AM]

Name:Martin Grimm seaflite@alphalink.com.au, [Msgid=478064]
Re; Helo Blades as RC Model Foils

• • Here are some rough ideas on how to calculate the lift of model helicopter blades when used as hydrofoils.

• • First you must have some idea as to the coefficient of lift for a blade of the cross section you have chosen.

• • Let?s assume the blade?s profile is asymmetrical and its thickness is 12% of the cord. An example of this type of wing would be a NACA 4412. From theory of Wing Sections, by Abbott and Doenhoff, you will see that the change in the coefficient of lift (Cl) will be linear from minus 10 degrees angle of attack (AOA) to 12 degrees AOA. At ?10 degrees the Cl is -.67. At 12 degrees the Cl is 1.55. Draw a graph with a line between these two points and you will know what Cl you have for any useable AOA. For example, 2 degrees AOA will generate a Cl of .6

• • To find the lift for any assumed AOA use the simplified lift formula L = F U^2 S Cl.

• • Where L is lift.

• • F is a factor and that factor is 2.09.

• • U is the velocity in MPH.

• • S is the area of the foil in feet^2.

• • Cl is the coefficient of lift from your graph.

• • So if you choose a foil of one tenth of a square foot flying at 10 MPH and the coefficient of lift is .6 (that is to say you have an angle of attack of 2 degrees) you will have lift of 2.09 x 10 x 10 x .1x .6 = 12.54 pounds.

• • You know that the lift required is equal to the weight of your model. Now that you have the formula you can change the various assumptions to arrive at the lift required.

• • Good luck.

• • Ray Vellinga

[Date/Time=07-30-2003 – 1:50 AM]

Name:Ray Vellinga rvell@san.rr.com, [Msgid=478612]
Grumman Concept Display Model

ViewThread

• • I saw this interesting display model for sale on eBay. The description reads as follows: “Offered here is a rare and unusual manufacturer’s model made by the Grumman Corporation. No date appears anywhere on the model, but appears to be from the 1960s. The model is a scale prototype of a “Hydrofoil Research Craft”. I do not believe that such a craft ever really was built, but it was to be 104 ft. long with a beam of 23 ft. She was to weigh 90 tons with a top speed of 60 knots. This desk-top model is approximately 14″ long. The base is made from solid walnut and measures about 5″ X 16″. The model is heavy, and appears to be constructed from cast metal and solid cast resin. The side foils hinge up, and the motor assembly in the stern also hinges up.”

• • The auction ends August 10, 2003. Here is a link to the page on eBay:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2186468518&ssPageName=ADME:B:SS:US:1

[Date/Time=08-04-2003 – 6:00 PM]

Name:Barney C Black webmaster@foils.org, [Msgid=481632]
Re; Grumman Concept Display Model

• • It appears to be a model of the hydrofoil “Denison” built by Grumman. I have a photo of her foilborn and was onboard her in the late sixties early seventies when she was in a cradle at San Diego.

[Date/Time=08-05-2003 – 1:58 PM]

Name:Dale Beresford dalkar1@msn.com, [Msgid=482171]
Re; Grumman Concept Display Model

• • I am attaching a photo of the hydrofoil “Denison” which I think is the ship the model represents.

[Date/Time=08-05-2003 – 2:03 PM]

Name:Dale Beresford dalkar1@msn.com, [Msgid=482175]
pt 50 model

ViewThread

• • i would like to rebuild a pt 50 hydrofoil model i would like to know if you know someone who has one for sale or information on how to rebuild one

[Date/Time=10-21-2003 – 11:27 AM]

Name:scott llewellyn Lljulie499@aol.com, [Msgid=529061]
pt50 model wanted

ViewThread

• • i have been wanting a pt 50 hydrofoilo for about 1 year now and i was wondering if you know where i could buy one or rebuild one

[Date/Time=10-21-2003 – 11:45 AM]

Name:scott llewellyn Lljulie499@aol.com, [Msgid=529070]
pt 50 model wanted

• • i have been looking for a pt 50 rc hydrofoil model i was wondering whever you know any places or people who could help with my search. i also want to rebuild one so do you know where they might be selling them or you have some prints that could help[ me rebuild one

[Date/Time=10-21-2003 – 12:12 PM]

Name:scott llewellyn Lljulie499@aol.com, [Msgid=529086]
Re; pt 50 model

• • Try Ebay.com for a PT-50 RC model,look for hydrofoil.

• • My colleague found one on ebay.de (germany)look for Tragfl?chenboot.

• • But most germans ship only in germany.

• • If you want to build one try to get good plans,

• • and photo’s.

• • Good luck!!!

[Date/Time=10-22-2003 – 5:42 AM]

Name:Capt M van Rijzen dutchhydrofoils@wanadoo.nl, [Msgid=529748]
Re; pt 50 model

• • This will not be easy to find. Take a look at the IHS pages at

http://archive.foils.org/modelrc.htm

• • and

http://archive.foils.org/models.htm

• • for names and email addresses of people active in hydrofoil modeling. According to one correspondent Nick James, he searched for 22 years before finding a Super Comet PT-50 model (

CONDOR I

• • ) in Italy. He took a chance and bought it. There is a photo of the completed R/C model on the IHS site.

[Date/Time=10-25-2003 – 7:55 PM]

Name:Barney C Black webmaster@foils.org, [Msgid=532304]
PHM; Patrol Hydrofoil Missileship

ViewThread

• • For sale:PHM: Patrol Hydrofoil Missileship!!!

• • Check:

http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item=3566908874&category=9160

• • This is a Radio Controlled model of the USS Aquilla, one of the PHM class hydrofoils used by the US navy.

• • The model is build in a scale of 1:30, this makes her length 135 cm, beam 48 cm, and the weight is 12 kg.

• • The model is build according to the original drawings of the Boeing company.

• • The aft foil can be controlled by a servo and gyro.

• • If you take away the deckgun, you can see the bowtruster and the mechanism to steer the bow foil.

• • the deckgun and radar rotate the Bow foil is used for steering it has a bowthruster (Bugschraube) for maneuvering

• • Deck, deckhouse and foils are made of aluminium.

• • Included:

• • – Model

• • – mould, to make a new PHM hull

• • – photobook, with many original photo’s

• • – many original drawings of the complete ship from boeing

• • – 18 cell NiCd 4 Amp!!! (25,2V)

• • – 4 cell NiCd 4,8 V for receiver

• • – 4 cell NiCd 4,8 V for bowthruster

• • – receiver

[Date/Time=11-20-2003 – 5:48 AM]

Name:Capt M van Rijzen dutchhydrofoils@wanadoo.nl, [Msgid=547275]
32nd Parallel Schnellboot Hull Source

ViewThread

• • What I have for you is information about the WWII Schnellboot. 32nd Parallel is out of business. However, there are two companies currently manufacturing fiberglass hulls for this boat and selling the hulls with some drawings (not a kit). This assumes some scratch building. They are: from England: (1/30th scale) Kingston Mouldings: email:

kingston.rw@lineone.net

• • website: KingstonMouldings.co.uk

• • The other one is an American company: (1/32nd scale) Microglass (you’ll find it if you use a search engine.) I am building the one from Kingston Mouldings.

[Date/Time=11-27-2003 – 10:50 AM]

Name:Steve Ebel stebel@stannslonggrove.org, [Msgid=550950]
re;

• • Hello

• • Here is another company that sells a VS8 in 25th scale.

http://www.harhaus.de/neuheiten2003.htm

• • . It is located in Germany.

• • about $1200 for a full kit without ship.

• • Antoine

[Date/Time=12-05-2003 – 5:53 PM]

Name:Antoine Lenormand antoine.lenormand@wanadoo.fr, [Msgid=554852]
 Image Attached:  “schell06.jpg”   Click Here To View
Re; PHM; Patrol Hydrofoil Missileship

• • possible to ship to the U.S.? possible to trade for unbilt kits of 32nd schnellboot and Hegi police boat hydrofoil , and cash? please reply thanks .

[Date/Time=12-22-2003 – 4:17 PM]

Name:Stephen Mc Donald shark15@optonline.net, [Msgid=562352]
Re; PHM; Patrol Hydrofoil Missileship

• • sorry ! just realized that you already sold the missileship. if you should come up with another please e-mail thanks. steve

[Date/Time=12-22-2003 – 4:32 PM]

Name:Stephen Mc Donald shark15@optonline.net, [Msgid=562357]
re;

• • Hi Steve

• • I am the happy owner of that beauty. The builder (Ronald) did a marvellous job. I would be happy to share some pics with people interested. I am modifying it with the original foils and waterjet propulsion. It will have an automatic control in roll and pitch to help during foilborne runs.

• • Antoine

[Date/Time=12-24-2003 – 1:29 AM]

Name:Antoine Lenormand antoine.lenormand@wanadoo.fr, [Msgid=562900]
 Image Attached:  “PHM4_2.JPG”   Click Here To View
Re; re; PHM model pics

• • can’t open the jpeg

[Date/Time=01-01-2004 – 11:11 PM]

Name:Dan Schmidt gse2schmidt@hotmail.com, [Msgid=565629]
cRe; Re; re; PHM model pics

• • If you want I can send some pics by email.

• • Antoine

[Date/Time=01-03-2004 – 11:08 AM]

Name:Antoine Lenormand antoine.lenormand@wanadoo.fr, [Msgid=566157]
Re; pt 50 model

• • HI,

• • I have just seen on in ebay.

• • Peter from Hong Kong

[Date/Time=01-15-2004 – 12:04 AM]

Name:Peter CHEUNG www.cckkww@hotmail.com, [Msgid=571745]
Re; pt50 model wanted

• • Hello there,

• • I have just seen a PT50 hydrofoil model in ebay and its item number is 3169557927.

• • Hoping that this information would be helpfulto you and good day.

• • Peter from Hong Kong

[Date/Time=01-15-2004 – 6:28 AM]

Name:Peter CHEUNG www.cckkww@hotmail.com, [Msgid=571824]
Re; Re; pt 50 model

• • Hello Peter , I am a member of the hydrofoil society and I was wondering , after seeing your message , where can I see and bid on this PT 50. On which E-Bay is it on? Thanks Stephen Mc Donald

[Date/Time=01-15-2004 – 3:32 PM]

Name:Stephen Mc Donald shark15@optonline.net, [Msgid=572094]
Re; Re; pt 50 model

• • Hello again Peter , I just found the item your were talking about on E-Bay , thank you very much for bringing this to our attention. If you should ever need anything from this side of the world please just E-Mail . Thanks again Steve

[Date/Time=01-15-2004 – 4:00 PM]

Name:Stephen Mc Donald shark15@optonline.net, [Msgid=572107]
Re; Re; pt50 model wanted

• • Just to let everyone know that the PT50 Model went for over $900.00 on e-bay!!! Wow

• • Rod Clayards IHS Member

[Date/Time=02-01-2004 – 5:52 PM]

Name:Rod Clayards rodbev@shaw.ca, [Msgid=582129]
RC PHM-1 Pegasus

ViewThread

• • I am in the process of undertaking the construction of a 6′ Radio Controlled PHM-1 Pegasus. My father was a Chief (ETC Nosek was his rate I believe) on the first crew, and I stood on the pier as a 9 year old kid on her first arrival to Key West. (Man, how the Coast Guard scratched their heads when she broke the horizon!) I would like to know if anyone has a copy of schematics, or technical drawings for her or the others. Due to the fact that she’s gone and I’ll never see her fly again, I want to build one that will. Also, since some of the correspondance on your pages are dated, what ever came of the others that were due to be scrapped. Are there anymore out there. Feel free to contact me at

laseredgt01@aol.com

• • . Thanks, TDM

[Date/Time=03-04-2004 – 3:54 PM]

Name:T.D. Mehl laseredgt01@aol.com, [Msgid=607827]
6` Radio Controlled PHM-1 Pegasus

ViewThread

• • I am in the process of undertaking the construction of a 6′ Radio Controlled PHM-1 Pegasus.? My father was a Chief (ETC was his rate I believe) on the first crew, and I stood on the pier as a 9 year old kid on her first arrival to Key West.? (Man, how the Coast Guard scratched their heads when she broke the horizon!)? I would like to know if anyone has a copy of schematics, or technical drawings for her or the others.? Due to the fact that she’s gone and I’ll never see her fly again, I want to build one that will.? Also, since some? of the correspondance on your pages are dated, what ever came of the others that were due to be scrapped.? Are there anymore out there.? Feel free to contact me at

laseredgt01@aol.com

• • .? Thanks, TDM

[Date/Time=03-04-2004 – 7:59 PM]

Name:TDM laseredgt01@aol.com, [Msgid=607933]
6` Radio Controlled PHM-1 Pegasus

• • Several documents with PHM technical information are included on the IHS AMV CD-ROMs including the original Builders Spec. I see that Floating Drydock is offering a set of PHM Hull faired lines and stations at 1/48 scale for $12. See their web page at

http://www.floatingdrydock.com/HULL.htm

• • . White Ensign Models offers a PHM kit. See their website at

http://www.whiteensignmodels.com/

• • . They sell their kit direct from the website, and they also have dealers that sell their products. See the following website for photos of a completed kit and hints for building:

http://steelnavy.com/wem_pegasus.htm

• • . Hope this is helpful. Please send photos and description of your model in process and finished for the IHS newsletter. Send to

editor@foils.org
[Date/Time=03-12-2004 – 7:36 PM]

Name:Barney C Black barney@alum.mit.edu, [Msgid=612693]
Re; RC PHM-1 Pegasus

• • See the IHS correspondence archive page at

http://archive.foils.org/restore.htm

• • for PHM contacts. One PHM is floating in Missouri. Last I heard, all or most of the others were in Wilmington, NC and were slowly being scrapped by their owner, an individual.

[Date/Time=03-12-2004 – 7:41 PM]

Name:Barney C Black barney@alum.mit.edu, [Msgid=612697]
6` Radio Controlled PHM-1 Pegasus

• • I just recalled that there is a guy who periodically sells copies of a drawing “OUTBOARD, OVERHEAD PROFILE & BODY PLAN” on eBay, if this would be of any help. His description is as follows:”Size of drawing is 23″W x 102″L. Scan on EBAY photo is terrible; drawing is very crispy, sharp. Buyer pays with US or Canadian Postal Money Order (US funds please!); shipping & handling is $ 10.50 within a rolled tube to 48 US states; Hawaii, Alaska or Canadian destination are $ 16.50 S/H. Overseas shipping on a case by case basis.” He has a copy up for auction now, item no. 2232579032 and the auction ends Mar 22. But if you miss this one, he will auction another copy soon. His eBay nickname is drydockjoe. You can contact him directly with questions by becoming an eBay member (free) and using the search feature to find him.

[Date/Time=03-16-2004 – 5:06 AM]

Name:Barney C Black barney@alum.mit.edu, [Msgid=614939]
PHM-1 Pegasus

• • Gentlemen,

• • Progress has come along nicely on the 6’6″ PHM-1 Pegasus. I know have a 24″ wide 6’9″ block of foam in order to to start shaping the Pegasus hull. I have secured the required HydroJet engines to push the boat once she is 14.4″ out of the water. I will build her out of carbon fiber. If the real Pegasus would do 60-70mph, I won’t rest until mine will do at least that! I have the radar guns ready. I will supply pictures once they are ready of the boat as she progresses. If I get a RC hydrofoil to do 70mph she will make the cover of magazines, everybody get ready for the stir! Anyone here remember my Dad? ETCS Lawrence Nosek, he was a 1st Class in Bremerton, then picked up Cheif, and Snr Chf before we left Key West in approx.’83. Thanks, and all of your suggestions, and pointers have been most helpful. Thanks, Troy Mehl

[Date/Time=03-17-2004 – 12:36 AM]

Name:T.D. Mehl laseredgt01@aol.com, [Msgid=615563]
PT-50 For sell

• • I have a PT-50 Super Comet kit for sell on ebay. The kit is new, in the box.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3186991152&category=2564&sspagename=STRK%3AMESSE%3AIT&rd=1
[Date/Time=04-08-2004 – 7:44 PM]

Name:Kelly kcunning@hrc.utah.edu, [Msgid=628494]
 Image Attached:  “IMG_00072.jpg”   Click Here To View
Plans for Kometa Model Needed

ViewThread

• • On your website I found model of Russian Meteor produced somewhere in Italy. Can you provide me more details – contacts – or do you know who hs a plans for such hydrofoil?

[Date/Time=05-31-2004 – 8:16 AM]

Name:Peter Caha pcaha@franklinfueling.com, [Msgid=656324]
Re; Plans for Kometa Model Needed

• • I believe you refer to the large model produced by Siderea in Rome. It was sold by Mantua Model, Italy. Photos and information about this model are provided by IHS correspondent Ho Sing in the IHS archives at

http://archive.foils.org/modelrc.htm

• • (scroll down to find photos and messages). You may want to contact Ho Sing and some of the correspondents who answered his posting. There is a scan of the model kit directions at

http://archive.foils.org/mantua1.jpg

• • .

[Date/Time=05-31-2004 – 8:27 AM]

Name:Barney C Black bblack11@cox.net, [Msgid=656326]
Re; Plans for Kometa Model Needed

• • Well, what do you want to know?? I own one,and have two drawing in 1:2 scale.

http://home.wanadoo.nl/~hydrofoils1/kometa.htm

• • I hope I can help you.

[Date/Time=06-02-2004 – 8:00 PM]

Name:Mark van Rijzen dutchhydrofoils@wanadoo.nl, [Msgid=657936]
Introduction of my R/CHydrofoilsModels wo

ViewThread

• • Hello. Mr.International Hydrofoil Society WEV master — I am Yoichi Takahashi is living in Kyoto by the radio control ship modeler of Japan On WEB,HP of an international hydrovane was discovered in the meantime, and itvisited it several times. I think that it is glad from very interesting contents. From several year before, although I was tackling radio control modeling of a hydrofoil, I succeeded in radio control-ization of the hydrofoil of 2 boats lately. Then, I contribute to your HP and think that I would like the modeler in the world to know. Since image data sends, please give me introduction by all means by HP. One is 1/40 of the scale models of the Boeing jetfoil. Sailing of all rejection type hydrofoils was realized by carrying out attitude control using the small gyroscope for model radio control helicopters. Although the promotion method was a propeller system, hydrovane control theory developed originally. The 2nd is the hydrovane patrol guided missile of the Maritime Self Defense Force of Japan. This ship realized surfacing sailing using the hydrovane by the same water jet promotion as thing. The water jet pump is using the miniature turbine pump of a full its original work. The hydrovane control theory of original development andthe gyroscope for model radio control helicopters are used also for this,and it stabilizes and runs by surface control. All run power by the electric motor of a nickel-Cd battery drive of 7.2V. Since the snap oftwo pictures and me is sent, please give me printing in the section ofthe radio control hydrofoil your homepage. In addition, you may alsocarry my E mail address. Thank you for your consideration. About my R/C hydrofoil, if there is a question, please inform the following and E mail address. Above yoichi takahashi

[Date/Time=06-12-2004 – 1:28 AM]

Name:yoichi takahashi skyex@triton.ocn.ne.jp, [Msgid=663149]
 Image Attached:  “scan0001.jpg”   Click Here To View
Introduction 2 my R/CHydrofoilsModels

• • The 2nd work of my R/C model hydrofoil is introduced. The 2nd is the hydrovane patrol guided missile of the

• • Maritime Self Defense Force of Japan. This ship realized surfacing

• • sailing using the hydrovane by the same water jet promotion as thing.

• • The water jet pump is using the miniature turbine pump of a full its

• • original work. The hydrovane control theory of original development and

• • the gyroscope for model radio control helicopters are used also for this,

• • and it stabilizes and runs by surface control.

[Date/Time=06-12-2004 – 1:54 AM]

Name:yoichi takahashi skyex@triton.ocn.ne.jp, [Msgid=663155]
 Image Attached:  “missilefoil.jpg”   Click Here To View
Introduction 1 my R/CHydrofoilsModels

• • One is 1/40 of

• • the scale models of the Boeing jetfoil. Sailing of all rejection type

• • hydrofoils was realized by carrying out attitude control using the small gyroscope for model radio control helicopters. Although the promotion method was a propeller system, hydrovane control theory developed originally.

[Date/Time=06-12-2004 – 2:00 AM]

Name:yoichi takahashi skyex@triton.ocn.ne.jp, [Msgid=663156]
 Image Attached:  “jetfoil.jpg”   Click Here To View
Introduction 3 my R/CHydrofoilsModels

• • My snap and I developed over the time for three years. Boeing jetfoil Recently image of 1 / 40 scale R/C model

[Date/Time=06-12-2004 – 2:08 AM]

Name:yoichi takahashi skyex@triton.ocn.ne.jp, [Msgid=663157]
 Image Attached:  “DSCF0011.JPG”   Click Here To View
6` Radio Controlled PHM-1 Pegasus

• • Well here are images of a PHM model on motor pods.

http://www.rcgroups.com/forums/showthread.php?t=41502&page=9&pp=15

• • RCgroups is a nice BBS format if anyone wants to try to incorporate it into this site. I find this style of bbs, the phpBB Group, and Invision Power Boards very easy on the eyes.

• • Also, I recommend the plans from floating drydock. My “engineer” has finished his 1-1 airplane build and has begun to focus on the model PHM project. We are not headed toward anything as large as six feet though.

• • Here is an image of his engine and jet pump in the cardboard model of the stern that I produced for him.

[Date/Time=06-14-2004 – 1:02 PM]

Name:Aimee Eng umi_ryuzuki@hotmail.com, [Msgid=664081]
 Image Attached:  “Pump01.JPG”   Click Here To View
Introduction of my R/CHydrofoilsModels wo

• • Hello Yoichi Takahashi, thank you very much for sharing these exciting photos and inventive designs. I hope that the editor of the IHS newsletter will publish these photos in the next edition and that the photo gallery editor will display them on the website. You have done some excellent work!

[Date/Time=06-14-2004 – 8:37 PM]

Name:Barney C Black bblack11@cox.net, [Msgid=664286]
6` Radio Controlled PHM-1 Pegasus

• • Hi Aimee, thanks for that URL with the excellent series of photos on the model PHM. Also, it is great to hear that you are starting on your PHM model after all these years of contemplation! For some reason I was not able to view the photo you attached to your posting, though… I am not sure why… maybe damaged in uploading.

[Date/Time=06-14-2004 – 8:44 PM]

Name:Barney C Black bblack11@cox.net, [Msgid=664288]
6` Radio Controlled PHM-1 Pegasus

• • I have noticed that same problem with other uploaded images on this board. I will upload it again, if it doesn’t work, I will post it at the R/C groups site.

[Date/Time=06-15-2004 – 12:46 PM]

Name:Aimee Eng umi_ryuzuki@hotmail.com, [Msgid=664561]
 Image Attached:  “Pump01.JPG”   Click Here To View
What model wetbike do I have

ViewThread

• • I have a Spirit Marine Suzuki made moter and it says wetbike on the handlebars. It was given to my Dad years ago, then he have it to me last week. I do have a serial #. How do I find out what year model I have. Thanks for your help.

[Date/Time=06-22-2004 – 11:45 AM]

Name:Darlene Chancery bobdarcy2001@yahoo.com, [Msgid=667971]
Re; What model wetbike do I have

• • Look at the WetBike’s serial number located on the rear of the craft(not the state’s registration number). US Standardized serial numbers use the first 3 letters (WJW for Wetco) to denote the boat manufacturer. The last 2 digits are the model year. Many WetBikes are late 70’s and early 80’s.

• • The engine is a product of Suzuki of Japan, so US parts may not fit. Suzuki gave me Ultranautics (800 356-0777) for replacement parts.

• • The WetBike was a lot of fun to ride and drew a lot of looks. It handled more like a motorcycle than jet ski. However, the WetBike is not a hydrofoil. The foils ride on the surface of the water like a wakeboard. I have an ’85 model stored in my shop.

[Date/Time=06-23-2004 – 3:03 PM]

Name:Barry Steele barry_steele@yahoo.com, [Msgid=668696]
Introduction 2 my R/CHydrofoilsModels

• • Utsukushi desu!!

• • ?????m san

• • If Possible could you provide pictures of the water intakes, engine, pump and controls inside your Spaverio model.

• • Aimee Eng

[Date/Time=07-01-2004 – 1:29 PM]

Name:Aimee Eng umi_ryuzuki@hotmail.com, [Msgid=673211]
Nikko R/C Hydrofoil for sale

• • Hello,

• • I have a Nikko Radio Controlled Hydrofoil currently on auction at ebay. Please have a look. There is No Reserve on the auction! This is a discontinued item!

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=2564&item=5907840509&rd=1&ssPageName=WDVW
[Date/Time=07-06-2004 – 8:49 PM]

Name:Kenji Watabe kenjiwaterbee@hotmail.com, [Msgid=675438]
Introduction 2 my R/CHydrofoilsModels

• • Hello. Mr,Aimee Eng.

• • Responding to your request, the picture of the water intake of my hydrovane patrol guided missile?@ship and an inboard mechanism is sent here. A water intake is the same structure as real ship. The electric motor which drives the waterway and water jet pump to a pump is carried in the inside.

• • Above

[Date/Time=07-10-2004 – 8:59 PM]

Name:yoichi takahashi skyex@triton.ocn.ne.jp, [Msgid=677558]
 Image Attached:  “WateIntakes.jpg”   Click Here To View
Introduction 2 my R/CHydrofoilsModels

• • Arigato Gozaimasu. Shashin ii desu.

• • (demo watashi onna desu.)

• • Thank you for posting the new images. However, they bring up more questions.

• • Does the entire waterway inside the boat fill up with water, and remain full as the boat runs?

• • Does it siphon feed fresh water or does it rely on forward speed to supply the intake.

• • You mention the motor supplying the waterway and jetpump are there two impellers? One to draw water into the waterway and one to push the boat forward?

• • Shitsureishimasu

• • Aimee Eng

[Date/Time=07-11-2004 – 9:08 PM]

Name:Aimee Eng umi_ryuzuki@hotmail.com, [Msgid=677894]
Introduction 2 my R/CHydrofoilsModels

• • Hi! Aimee Eng san conbanwa!

• • I reply to your question.

• • If a hydrofoil is soaked in the water surface, water permeates from a water intake and the injection mouth of a jet pump. The water will

• • small air slightly into a water duct, and will fill most. If rotation of a turbine pump increases in order to start a ship, with jet injection of water, the air in a water duct will serve as a bubble, and will be discharged. Therefore, it is filled with water at the time of a foil born, and the inside of a duct can supply water to a turbojet pump continuously. It inhales with the amount of injections of a turbojet pump, and quantity and hull speed need to carry out the design which maintained balance in relation to mutual for efficient and continuous operation of a turbojet pump. Since the illustration in order to help an understanding is appended, please refer to. Then,

• • PS: It is very good at Japanese in your Roman alphabet. Can Japanese be spoken?

• • Above

[Date/Time=07-17-2004 – 10:09 AM]

Name:yoichi takahashi skyex@triton.ocn.ne.jp, [Msgid=681043]
 Image Attached:  “hidrofoil-1.jpg”   Click Here To View
Introduction 2 my R/CHydrofoilsModels

• • Mo arigato gozaimasu

• • I can speak a little Japanese, but my vocabulary is small.

• • Since my friend has again gone flying, the PHM project is halted on account of good weather.

• • I had intended to start a PT-50 project to fill the hydrofoil project time, as they are “v” foils and propeller driven. An easier project.

• • However you have inspired me to attempt another jet drive on my own. And make this an electric project.

• • Here are the frames I cut today.

• • Left PT-50

• • Right Sparviero Missle hydrofoil

[Date/Time=07-17-2004 – 2:50 PM]

Name:Aimee Eng umi_ryuzuki@hotmail.com, [Msgid=681182]
 Image Attached:  “P1010022copy.jpg”   Click Here To View
Introduction 2 my R/CHydrofoilsModels

• • Here is today’s progress on the Sparviero Missle foil hull.

• • It is sheeted and ready for fiberglass.

[Date/Time=07-18-2004 – 9:57 PM]

Name:Aimee Eng umi_ryuzuki@hotmail.com, [Msgid=681592]
 Image Attached:  “P1010027a.jpg”   Click Here To View
RHS 160 F- Foil Arrangement

• • I want to build a RHS 160F and so I am searching for detailed plans, also of the foil arrangement. I am searching for a side view, a top view and a front view. Perhaps anyone can help me.

[Date/Time=07-19-2004 – 5:17 PM]

Name:Felix Marsteller marsteller.honnef@t-online.de, [Msgid=681975]

PRIOR TO 2002: