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|Hydrofoils: Models||Hydrofoils: Pleasure||Hydrofoils: Sailboats||R/D: Student Projects/Thesis etc.||Sources, Buy/Sell: Brokers-Builders-Designers-Operators||Miscellaneous:Hybrids-Other High Performance Vessels-etc.|
Updated last February 27, 2005
Hydrofoils: Pleasure Top
[Date/Time=03-24-2002 - 1:30 AM] Name:firstname.lastname@example.org [Msgid=237493]
[Date/Time=03-24-2002 - 1:37 AM] Name:email@example.com [Msgid=237495]
[Date/Time=03-24-2002 - 12:19 PM] Name:firstname.lastname@example.org [Msgid=237622]
[Date/Time=03-24-2002 - 3:05 PM] Name:email@example.com [Msgid=237681]
[Date/Time=03-24-2002 - 3:53 PM] Name:firstname.lastname@example.org [Msgid=237697]
[Date/Time=03-25-2002 - 3:41 PM] Name:Webmaster@foils.org [Msgid=238092]
[Date/Time=03-29-2002 - 7:07 PM] Name:Webmaster@foils.org email@example.com, [Msgid=239981]
hydrofoil set-up that's made to fasten
to a pair of water skiis. It looks like
an upside-down triangle with the hydrofoil
(the part that "looks like an airplane")
fastened to the bottom (the point on the
triangle). I don't know how to fasten
the set-up to the skiis. Has anyone ever
run across a similar set-up? If so, can
you help with ideas for assembling mine?
Also, is there any literature (owners
manuals, photos, etc.) that I might find
on the net?
Thanks for any help you can give me!!!
[Date/Time=04-29-2002 - 12:55 PM] Name:Jeff B. firstname.lastname@example.org, [Msgid=253211]
[Date/Time=05-03-2002 - 7:16 PM] Name:Barney C. Black email@example.com, [Msgid=255141]
[Date/Time=06-27-2002 - 7:29 PM] Name:Matthew Burns firstname.lastname@example.org, [Msgid=276277]
[Date/Time=06-29-2002 - 7:39 AM] Name:Eddy email@example.com, [Msgid=276806]
[Date/Time=06-29-2002 - 10:24 AM] Name:Don Williams firstname.lastname@example.org, [Msgid=276831]
I have been kicking around ideas similar to what you are trying to accomplish. Fluid dynamics is not my area, but there is something you might want to consider. Helicopter main rotor blades are available with widths from approximately 5" to over 1' (huey). You can't buy them new ($$$$$$$$$$$$) but there is an interesting alternative. When a rotor blade is damaged or timed out, the manufacturer won't sell you a new one unless you return the old one. I suppose they don't want you to repaint it and sell it. However, it costs money to send a 10'-15' blade to the manufacturer. So most manufacturers don't require the whole blade, just the first 6" where the rotor mounts are. I have had a little success in getting a helicopter repair shop to give me the remaining length, you might get more responses if you give them a little monetary incentive. The blades I have came off a Robinson 22, they are 7.2" wide by 1.1" thick, 9' long, no discernable wash-out (twist), and STIFF. All aluminum and honeycomb (construction is fantastic, no wonder they cost a fortune new) and have a cross section almost identical to the foils used on the Windrider hydrofoil catamaran. If you like I can send you cross section.
At one time last year I got an e-mail from a helicopter shop that is run by the son of one of the engineers on a Bell hydrofoil project. I was looking for partial or rejected sections, but he said if I gave him the NACA numbers or design criteria he could custom make the foils I needed in carbon fiber. I don't know what he would charge, but if you are interested I will dig up his number.
Lastly, I am a manufacturing engineer for a medical device company. A lot of what I do is building custom manufacuring machinery, much of which is computer controlled. Using a router motor, leadscrews, stepper motors and drivers, and an old pc it is possible to build a cnc machine that can not only cut your patterns from flat stock, but can change the profiles and contours to any shape you need. It isn't as expensive as you might think. Without knowing all the details I believe we could put it together for under $2000. It could cut any shape within a pre-determined area in wood (I've seen oak foils on boats weighing over 1000 pounds), plastic, aluminum, or fiberglass. BTW, I'm looking into using G10 (FR4) fiberglass (used to make fins for supersonic rockets) with an overlayer of carbon fiber (for extra stiffness) as an alternative to metal for smaller foil boats. The material isn't much cheaper, but it is easier to machine, lighter, and won't corrode.
Let me know if I can help,
[Date/Time=06-29-2002 - 10:37 AM] Name:Scott Smith email@example.com, [Msgid=276833]
[Date/Time=07-03-2002 - 8:53 PM] Name:Gary A Sloat firstname.lastname@example.org, [Msgid=278582]
There were some plans in Popular Science and Science and Mechanics back in 1960. These were wooden foils added to about a 16 foot runabout, as I recall. These magazines do go up for auction occasionally on eBay. There is info on our site at http://www.foils.org/linksout.htm#plans and at http://www.foils.org/popmags.htm.
Hydrofoils, Inc. built at least one 16-foot, two person hydrofoil back in the 70s but never developed it into a generally available product. There used to be a photo of it up on the company site at www.hydrofoil.com, but it has been taken down as the company's focus shifted to larger craft. The company owner Ken Cook is an IHS member... I don't know whether the plans could be made available, but it could be worth contacting him.
Other pages on the IHS site of possible interest include:
Finally, I occasionally see Volga hydrofoils go up for sale or auction, such at the one currently listed at: http://www.frenchcreekboatsales.com/pleasure/volga.htm
[Date/Time=07-03-2002 - 9:03 PM] Name:Barney C. Black email@example.com, [Msgid=278588]
You might want to specifically check out our Archve on small Jet-ski type Hydrofoils. http://www.foils.org/oneperson.htm A number of these craft are built small companies or individuals who might be willing to share plans or sell partially assembed boats to you.
In addition there is a thriving new market for small Sailing Hydrofoils. Try out our Links page or the Hydrofoil Sailboat Section of this bulletin board and Sellect the See "all messages" option to see our archives of lots of small sailing hydrofoils.
Best of luck
[Date/Time=07-04-2002 - 3:08 PM] Name:Bill White firstname.lastname@example.org, [Msgid=278808]
[Date/Time=07-09-2002 - 7:21 AM] Name:Scott Smith email@example.com, [Msgid=280245]
[Date/Time=07-09-2002 - 7:33 AM] Name:Scott Smith firstname.lastname@example.org, [Msgid=280246]
If anyone has an original service manual, I would love to make arrangements to scan it. Like everything else I would provide the scans for free to anyone in need.
[Date/Time=07-09-2002 - 12:09 PM] Name:Scott Smith email@example.com, [Msgid=280368]
[Date/Time=07-12-2002 - 7:15 PM] Name:Barney C. Black firstname.lastname@example.org, [Msgid=281879]
I am a member of the International Hydrofoil Society, and my company specializes in custom built yachts and our team has some of the most talented hydrofoil designers (engineers) in the world, all of them with military hydrofoil background.
We currently offer three BUGATTI YACHTS hydrofoil designs, ranging from 32ft all the way to 146ft, which are custom built to our customer's specific requirements. It happens that I have recently designed a 32ft, called the TT- Titanium Tender Hydrofoil, which may well suit your needs. If the price is of the TT is not on your budget, we can build you a cheaper version as per your requirements.
John F. Rodrigues
President & CEO
1515 N. Federal Hwy. Suite 300
Boca Raton, FL 33432
Ph.: (561) 330-0490
Fax: (561) 498-7229
Web site is http://www.BugattiYachts.com
[Date/Time=07-14-2002 - 5:33 AM] Name:John F. Rodrigues JFR@YachtBoutique.com, [Msgid=282206]
It's a shame they never mass produced it. Even 14 years later, it still looks pretty darned sexy and fun!
-- Aaron Sakovich http://www.alphant.com/alphaman.html
[Date/Time=07-21-2002 - 5:02 PM] Name:Aaron Sakovich email@example.com, [Msgid=284927]
I have sent you a e-mail to the address listed here and to the one on your web site to invite you to join IHS. In both cases, the e-mail was returned undeliverable. See our web page www.foils.org for information.
[Date/Time=07-26-2002 - 1:37 PM] Name:S. Arima firstname.lastname@example.org, [Msgid=286886]
[Date/Time=07-27-2002 - 8:00 AM] Name:Barney C. Black email@example.com, [Msgid=287107]
We would be very happy to hear from anyone who can help, just to define clear questions.
[Date/Time=08-03-2002 - 2:32 PM] Name:Jorma Lux firstname.lastname@example.org, [Msgid=290021]
[Date/Time=08-04-2002 - 7:16 PM] Name:Barry Steele email@example.com, [Msgid=290530]
New Mercury 40 HP, Trailer, Original 35 HP Evenrude Lark (stuck), Morse Controls. Runs great. Can deliver in Southeast US. $27,350.00
160 Harner Road, Kathleen, GA 31047 (478)987-0356
[Date/Time=08-19-2002 - 5:56 PM] Name:Myrel Harner firstname.lastname@example.org, [Msgid=298164]
[Date/Time=08-23-2002 - 12:58 PM] Name:Scott Smith email@example.com, [Msgid=300159]
[Date/Time=08-23-2002 - 1:36 PM] Name:Scott Smith firstname.lastname@example.org, [Msgid=300178]
[Date/Time=08-24-2002 - 4:11 PM] Name:Scott Smith email@example.com, [Msgid=300630]
[Date/Time=08-24-2002 - 4:15 PM] Name:Scott Smith firstname.lastname@example.org, [Msgid=300631]
This is a *very* slow speed device--even 20 mph is too fast. Speed is critical. I ask the boat driver to accelerate very slowly (a typical waterski start is neither necessary nor desired) and to stop accelerating when the skiis are on the surface. Then a little more speed will fly it. Too much speed and it will fly out of the water. The skier can control the height somewhat by raising and lowering his arms (arms must be straight at all times). Raise the arms to fly lower in the water and lower the arms to fly a little higher. The unit is very difficult to control. It wants to porpoise. Many people have tried to ride this contraption but I am the only one that has been successful (to a point). In 50 years of waterskiing I have had only one accident--I dislocated my shoulder taking a fall while flying it.
I hope that this is helpful and relevant to the discussion. If you need more information, let me know. --Mike
[Date/Time=08-25-2002 - 7:41 PM] Name:Michael W. Preis email@example.com, [Msgid=300993]
Reply Posted:I did not see the original post for information on hydrofoils for water skis but am responding to Scott Smith's post of 8/23. I have such a set, dating back to about the '60s. It is, indeed, for a pair of skiis, not a single slalom ski. The set is about 300 miles from here so I can only give you my best recollection of dimensions. The skiis are positioned so that the skier's feet are about one foot apart and the arch of the feet is directly over the strut. At the bottom of the strut is a longitudinal bar to which two foils are attached; one forward of the strut and the other behind it. As I recall, the forward foil is positioned to provide lift and the aft foil provides downward force, counteracting the moment caused by the pull of the rope. I believe that the aft foil is the larger of the two but could be mistaken about that. There was a third foil used for "training" but that was taken off and lost many years ago.
This is a *very* slow speed device--!
even 20 mph is too fast. Speed is critical. I ask the boat driver to accelerate very slowly (a typical waterski start is neither necessary nor desired) and to stop accelerating when the skiis are on the surface. Then a little more speed will fly it. Too much speed and it will fly out of the water. The skier can control the height somewhat by raising and lowering his arms (arms must be straight at all times). Raise the arms to fly lower in the water and lower the arms to fly a little higher. The unit is very difficult to control. It wants to porpoise. Many people have tried to ride this contraption but I am the only one that has been successful (to a point). In 50 years of waterskiing I have had only one accident--I dislocated my shoulder taking a fall while flying it.
I hope that this is helpful and relevant to the discussion. If you need more information, let me know. --Mike
Posted by - Username: Michael W. Preis.
Poster's email address is: firstname.lastname@example.org.
Message Id 300993
Message Category: Hydrofoils: Pleasure
[Date/Time=08-26-2002 - 7:56 AM] Name:Scott Smith email@example.com, [Msgid=301156]
Is it made of steel our wooden beams?
[Date/Time=09-05-2002 - 4:53 AM] Name:Mark van Rijzen firstname.lastname@example.org, [Msgid=305679]
[Date/Time=09-05-2002 - 8:11 AM] Name:Scott Smith email@example.com, [Msgid=305714]
[Date/Time=09-06-2002 - 3:48 PM] Name:Scott Smith firstname.lastname@example.org, [Msgid=306315]
Have scooter and just moved to coastal town. Thought crossed my mind maybe there is some sort of hydrofoil assembly to mount a scooter on. Taking drive from the back wheel via rollers to a propeller. Prefer hydrofoil to lessen drag etc etc. Hopefully can be transported by scooter to launch site then quick assembly.
[Date/Time=09-19-2002 - 5:03 PM] Name:Vivian Dewey email@example.com, [Msgid=312044]
[Date/Time=09-20-2002 - 2:55 PM] Name:Barney C. Black firstname.lastname@example.org, [Msgid=312421]
[Date/Time=09-24-2002 - 10:25 AM] Name:Scott Smith email@example.com, [Msgid=313894]
[Date/Time=09-24-2002 - 3:39 PM] Name:gary estremsky firstname.lastname@example.org, [Msgid=314088]
Trixi is doing just fine; however, she has not been flying. We think the problem is that the boat is too heavy in the front. The engine has been moved quite a bit forward from the original location. It was supposed to be in the aft, with the propeller up front. But, the designer changed his mind and changed it around to more traditional layout. We had some test runs this summer, without being able to get the boat up in speed, since it tends to drop down in the front before the wings start to produce lift. On some of the pictures you will see two "bows" that we fitted in front of the tunnels. We did this to get more of the hull above the waterline, and to increase the buoyancy. We have now built larger wings and bows in styrofoam (?), which is very light, to get even more buoyancy. This latest modification will be tried out in a couple of days. We have also had problems in getting the right propeller. I have moved the website, and will
shortly include some more pictures. Please see www.inocean.no/trixi
[Date/Time=09-25-2002 - 7:36 PM] Name:Thomas Eckey email@example.com, [Msgid=314827]
Billabong Odyssey: http://www.BillabongOdyssey.com . The search for the 100 ft wave begins here. Get up-to-date information about this incredible quest for the 100 ft wave.
[Date/Time=10-26-2002 - 9:26 PM] Name:Bill Sharp SurfNewsEd@aol.com, [Msgid=329325]
1958 Grumman Hydrofoil ad to $17,500. Myrel E. Harner
[Date/Time=11-24-2002 - 8:31 PM] Name:Myrel E. Harner firstname.lastname@example.org, [Msgid=342947]
engine). As I noticed on your page, many people have shown interest in this kind of boat, and are hungry for any bit of information available on it. I would be pleased to share any photos of the boat. As the restoration process hasn't even really started, I can provide you with pics of boat's current state :)
[Date/Time=11-25-2002 - 7:24 PM] Name:Kaspars V. email@example.com, [Msgid=343359]
[Date/Time=11-27-2002 - 3:14 AM] Name:Jeff Mikkelsen firstname.lastname@example.org, [Msgid=344071]
I hope I didn't go on too much, I guess I should knock off the coffee. Anyway, I am interested in talking to you about you plans. As for me, I bought a 14' aluminum utility boat, added a 4-stroke, electric start, extra long shaft (not 15", not 20", but 26" shaft), Honda outboard. Next comes the remote steering console, and then the foils (submerged). I hope to be able to run a 2' chop. I also have a 12' aluminum boat with a 10hp longshaft Honda (tiller) that I plan to put wooden surface piercing foils on, just for fun and comparison. My biggest problem right now is time, but I'm working on it.
[Date/Time=11-27-2002 - 9:22 AM] Name:Scott Smith email@example.com, [Msgid=344132]
[Date/Time=11-27-2002 - 9:27 PM] Name:Matt Kirk firstname.lastname@example.org, [Msgid=344357]
The Grumann Sea Wing hydrofoil kit and runabout is another design that was marketed and could possibly be revived. Myrel Harner has one of these for sale right now, see http://www.foils.org/announce#buyfoil. If you use the Search Engine on the IHS Main Page at http://www.foils.org to search for the exact phrase ?sea wing? you will find many more references on the IHS site to this design.
Both Tom Lang?s design and the Grumann design are surface piercing hydrofoils designed for small runabouts. Moving a step up in size and going to a fully submerged design with automatic control system, see Harry Larsen?s modified Bayliner at http://home1.gte.net/hlarsen0/. Harry has offered his design to others as well as has offered his boat TALARIA III with no takers so far. He may be able to offer some insight from his experience as to why the lack of wider interest.
As to the subject of an Automatic Control System, Harry Larsen gives info on his ACS on his site. Since the days of the military hydrofoils, commercially designed and manufactured sensors and other components have become available that improve the ability to create a reliable and affordable ACS. For example, Malin Dixon has done work on this. See his site at: http://www.onspec.co.uk/ihs/model.htm
On the sailing side, Dave Keiper had started marketing his hydrofoil kit for Hobie and other small catamarans when he died unexpectedly. He had a foundry run foil extrusions for him, and was selling foil kits made from them, along with instructions on how to mount the foils. Detailed information on the design, extrusion source, etc. are available (though a bit chaotic) in the set of Dave?s files available from IHS, see: http://www.foils.org/ihspubs.htm#dakfiles. Dave Keiper's brother Frank still maintains part of the website at http://www.wingo.com/dakh/.
Dave Carlson, who had worked with Keiper, continued to refine and mature the details of the design until selection of fastener materials and other details of the design until it is now quite workable. So far, he has not to my knowledge tried to market it. See Dave Carlson?s website at http://www.fastsail.com/catcobbler/.
Recently there has been quite a bit of interest and experimentation in adding foils for racing in the International Moth Class, and resouces for foils have developed concurrently. For example, see http://imca-wa.freeyellow.com/Resources.html
Finally, this is not a kit, but I mention it as an item of interest from the marketing point of view. Aside from radio controlled models, the home-grown hydrofoil design that has generated the most interest recently on the IHS site (in terms of correspondence) has been Steve Gresham?s design, which according to Steve is sufficiently developed to go to manufacture. This is offered for sale on the Announcements page at http://www.foils.org/announce.htm#sale
[Date/Time=11-28-2002 - 8:25 AM] Name:Barney C. Black email@example.com, [Msgid=344445]
[Date/Time=12-15-2002 - 11:31 AM] Name:Robert Miller firstname.lastname@example.org, [Msgid=351587]
[Date/Time=12-23-2002 - 12:28 AM] Name:Mick Matthews (via M. Grimm) email@example.com, [Msgid=354794]
Attached File "volga1~jpg.zip" - size 223254 Click Here To Download
On the face of it, it seems like a former Soviet river / coastal patrol craft although I have never read anything about the Volga being used in such a role. The launcher on the engine cover looks like a chaff or flare launcher used to decoy heat seeking or radar based missiles. I have never seen any images of a Volga with a built up cabin such as shown in the photos of your craft, but that may have been the result of a special request for a police / military order.
It is also possible that this craft was modified and painted up from an ordinary civil Volga for the purposes of being used in a movie.
The model seem to be a Volga 70. That is the type that had the Volvo Penta stern drive fitted instead of a Russian engine combined with a normal inclined shaft and propeller.
Hope someone else know more about your particular craft.
[Date/Time=12-23-2002 - 12:48 AM] Name:Martin Grimm firstname.lastname@example.org, [Msgid=354802]
[Date/Time=12-23-2002 - 5:45 AM] Name:Barney C Black email@example.com, [Msgid=354851]
[Date/Time=12-27-2002 - 6:12 PM] Name:Konstantin Matveev firstname.lastname@example.org, [Msgid=355987]
I am naturally curious about what type of hydrofoil that may have been. It would needed to have been reasonably small to be lifted onto the deck of the motor yacht, perhaps a Volga or Aquavion Waterman? Rodriquez also show on their website a hydrofoil motor boat which was referred to as the ROL 700 (Yard Number 177, delivered 1973) and that would have looked the part as a tender for such a large luxury yacht.
If anyone knows the hydrofoil type that was carried on ?Christina? or has a picture of the craft, I would be pleased to hear from you.
[Date/Time=01-01-2003 - 3:29 AM] Name:Martin Grimm email@example.com, [Msgid=357444]
[Date/Time=01-06-2003 - 7:13 AM] Name:Dave Stewart firstname.lastname@example.org, [Msgid=359228]
One of them is planned to appear at the No1 Boat Show in Sweden,
the Stockholm Boat Show starting March 1st 2003. The russian
GAZ53 engine will be replaced with a GM V8 305 cu.in. and the
original V-drive will be restored and refitted. In next summer
season there will be approx. 10 Volgas operational in the
Stockholm archipelago and a Volga meeting is planned to take place
end of August 2003. Club Volga Stockholm will supply additional
info on request.
[Date/Time=01-18-2003 - 7:42 PM] Name:Jan Wennerstrom email@example.com, [Msgid=363963]
[Date/Time=02-07-2003 - 8:32 AM] Name:Rick firstname.lastname@example.org, [Msgid=373850]
[Date/Time=06-03-2003 - 7:31 AM] Name:Gerry Levine email@example.com, [Msgid=446220]
There are some larger commercial hydrofoils of the Russian surface-piercing design operating to Niagara Falls. See the website: http://www.seaflights.com/home.php
[Date/Time=06-06-2003 - 10:04 PM] Name:Barney C. Black firstname.lastname@example.org, [Msgid=448485]
[Date/Time=06-25-2003 - 4:03 AM] Name:Peter Segerblom email@example.com, [Msgid=459415]
[Date/Time=08-08-2003 - 4:57 PM] Name:Eliot James firstname.lastname@example.org, [Msgid=484407]
Does anyone know of this craft?
[Date/Time=08-09-2003 - 12:20 PM] Name:Larry Bruder email@example.com, [Msgid=484754]
[Date/Time=08-10-2003 - 5:42 PM] Name:Barney C Black firstname.lastname@example.org, [Msgid=485395]
The Volga is fairly much an aluminium boat with stainless steel foils, no wood in it to speak of. This probably rules it out as a possibility. Also, the drive shaft on the Volga is not of the order of the length of the boat, even for the models with the original russian engive and V-drive gearbox.
Two other possibilities are the Rodriquez ROL 700 a smallish hydrofoil pleasure boat or one of the pleasure craft / tender boats built by the Vertens yard in Germany in the 60's. I will post a separate message about those shortly.
[Date/Time=08-12-2003 - 10:55 AM] Name:Martin Grimm email@example.com, [Msgid=486429]
[Date/Time=08-13-2003 - 1:11 PM] Name:Leslie Ekker firstname.lastname@example.org, [Msgid=487148]
Not a Volga. Examining the photos of the Volga I can say that the foils on the "boat" that i am asking about were deeper than the Volga. I remember that there was an equally deep rear pillar-rudder. i can't recall if there was a foil at the rear or if it was just a planing surface...a planing surface I think. Something else that may be a clue. In looking for foils on the 'net I returned a reference to Sir William Stevenson, Canada's famous spy-master; he was interested in foils.He was from Winnipeg, and ran some operations here during WWII. I'm intrigued whether this "boat" may be linked to him.
[Date/Time=08-14-2003 - 10:05 AM] Name:Larry Bruder email@example.com, [Msgid=487693]
From the document: In ~1952, the Greek shipowner Onassis, which at that time had contracted with the Kiel based Howaldswerken for the construction of the large luxury yacht 'Christina', ordered from Vertens-Werft a sport boat, which should drive at 100 km/h. It was later handed over to Mrs Onassis. The hydrofoil boat was equipped with a Merceded Benz 300 engine. At the time, the 6.20m long boat cost 100,000 DM.
A photo of an apparently similar hydrofoil delivered to a South American customer appears in the article.
[Date/Time=08-18-2003 - 9:40 AM] Name:Martin Grimm firstname.lastname@example.org, [Msgid=489778]
I can't give you any further leads ony the possibility Sir William Stevenson was asociated with the hydrofoil you once saw.
As I mentioned previously, series of hydrofoil motor boats built by the Vertens Werft in Germany may fit the description you have given. Details can be found in a pdf document "Die Vertens-Werft" (in German) prepared by Walter Koblank and available at the following internet site: www.fky.org/literatur/hefte/fky10-vertens.pdf
A photo of a hydrofoil delivered to a South American customer appears in the article. Is that perhaps the type of craft you recall seeing?
[Date/Time=08-18-2003 - 9:51 AM] Name:Martin Grimm email@example.com, [Msgid=489781]
You can try mine out if you want to come to Nuneaton England.
[Date/Time=08-18-2003 - 3:51 PM] Name:Malin Dixon firstname.lastname@example.org, [Msgid=489960]
Image Attached: "A1_OLA1_.JPG" Click Here To View
it home. It is missing the power plant and missing just below the rear
foil. I would like info on where to find specs and how it operates and
maintenance. I also am a pwc owner.
[Date/Time=09-13-2003 - 9:09 AM] Name:Glenn email@example.com, [Msgid=506509]
[Date/Time=09-13-2003 - 9:16 AM] Name:Barney C Black firstname.lastname@example.org, [Msgid=506512]
At rpm 3200 on the GM V8 305 c.i. it does 36 knots with a
gearbox 1,52:1. Itœµ a bit light and runs free on wings already
at 25 knots. At speed 32+ the aft is very high and stearing
is a bit hazardous.
The hull anods of magnesium hangs outside in port only and
is grounded inside in hull with a coated stainless wire.
Take of has been no problem even with nine people onboard.
So I guess a 6 cyl engine 4.3 ltrs would have been sufficient
power - or a bit higher gear.
Regards Jan Wennerstr?
[Date/Time=09-22-2003 - 6:48 PM] Name:Jan Wennerstrom email@example.com, [Msgid=512314]
[Date/Time=10-15-2003 - 4:53 PM] Name:Jan Wennerstrom firstname.lastname@example.org, [Msgid=525908]
Image Attached: "Loudden.JPG" Click Here To View
[Date/Time=10-15-2003 - 5:00 PM] Name:Jan Wennerstrom email@example.com, [Msgid=525914]
Image Attached: "WingLift.JPG" Click Here To View
[Date/Time=10-25-2003 - 7:48 PM] Name:Barney C Black firstname.lastname@example.org, [Msgid=532303]
[Date/Time=11-06-2003 - 2:48 PM] Name:Elton Hill email@example.com, [Msgid=539070]
[Date/Time=11-21-2003 - 10:17 PM] Name:Barney C Black firstname.lastname@example.org, [Msgid=548415]
[Date/Time=02-28-2004 - 1:02 AM] Name:Tom Speer email@example.com, [Msgid=604866]
[Date/Time=03-01-2004 - 8:32 AM] Name:Arthur firstname.lastname@example.org, [Msgid=605824]
Very cool looking and I'd love to see one in action!
[Date/Time=03-07-2004 - 11:24 PM] Name:Todd email@example.com, [Msgid=609505]
[Date/Time=03-08-2004 - 9:26 AM] Name:Eliot James firstname.lastname@example.org, [Msgid=609646]
[Date/Time=03-12-2004 - 12:37 PM] Name:CHRIS HALL HALLBOYS@BELLSOUTH.NET, [Msgid=612416]
[Date/Time=03-12-2004 - 7:18 PM] Name:Barney C Black email@example.com, [Msgid=612678]
[Date/Time=03-15-2004 - 2:15 PM] Name:David W Rynders, Naples, FL firstname.lastname@example.org, [Msgid=614278]
My brother and I finally bought the Dynafoils and it turns out there were actually 3 of them. 1 is an "early" 340cc model without trim tabs and the other 2 are the later 440cc models with trim tabs.
If anyone would like to share info on them, we'd sure appreciate it. We'd ultimately like to get all 3 up and flying, but they need quite a bit of engine repairs, all 3 carburetors and air cleaners are missing, and 2 of the rubber ring drive-shaft couplings are missing.
We'd sure be thankful for a copy of a repair manual and an owner's manual if anyone would be interested in doing that. We'd also like any info on parts sources for the Chaparral (Fuji Motor Co.) engines.
I was just reading on another guy's site that only about 500 of these were ever made and they were around $3,500.00 brand new in the mid/late 70's. Pretty amazing!
[Date/Time=04-26-2004 - 2:07 AM] Name:Todd Miller email@example.com, [Msgid=637007]
[Date/Time=04-26-2004 - 8:53 AM] Name:Scott Smith firstname.lastname@example.org, [Msgid=637078]
Image Attached: "IMG_0115.jpg" Click Here To View
Thank you very much for all the fantastic photos you sent of your Dynafoil in action. Amazing and you Dynafoil is beautiful! I appreciate your fast response and I'm looking forward to talk with you more.
I agree, it's a shame to see them rot and my hope is that we can get all 3 flying again.
[Date/Time=04-26-2004 - 12:18 PM] Name:Todd Miller email@example.com, [Msgid=637201]
[Date/Time=04-26-2004 - 6:05 PM] Name:Barry Steele firstname.lastname@example.org, [Msgid=637369]
Image Attached: "020715_Engine_Install.jpg" Click Here To View
I just bought a 1961 14' 6" aluminum runabout that was pretty much stripped down for refurbishing and never finished. The previous owner said is was a "Hydro Ski". He had used it without the skis.
I am a fabricator and welder. I sure would like to find information
so I could put this boat back into hydrofoil working order.
[Date/Time=05-09-2004 - 9:45 PM] Name:Dana Covert email@example.com, [Msgid=644393]
[Date/Time=05-13-2004 - 5:43 AM] Name:Barney C Black firstname.lastname@example.org, [Msgid=646467]
I am most interested to hear what you are doing with a pontoon boat,
which might have hydrofoils on it. I am interested in doing the
same thing on Lake Lanier.
Please call 404-754-0030 or email email@example.com
[Date/Time=05-31-2004 - 2:19 PM] Name:Jim Boff firstname.lastname@example.org, [Msgid=656458]
[Date/Time=06-02-2004 - 8:08 PM] Name:Barney C Black email@example.com, [Msgid=657942]
He's decided to put a Kawasaki Jetski powerplant in his and has purchased a really early stand up Jetski that he can gut. This will give him electric start, more modern ignition, and an easier source of parts, as well as access to performance parts.
I've decided to go with the original set up and have found a source for NOS (New Old Stock) Chaparral/Xenoah engines. I've got one on the way right now. I've also contacted (thanks to this site and fellow Dynafoil owner Scott Smith) the lady who's the goddess of the Walbro WDA-6 carb that were used on the Dynafoils. She's building one for me this week. I decided to go the "simple" stock route hoping it would speed up the process and give me more of a drop in installation.
I'm hoping to have the engine and carb here by next week and then start putting it all back together. I'll provide another update as things progress.
[Date/Time=06-09-2004 - 11:45 PM] Name:Todd Miller firstname.lastname@example.org, [Msgid=662061]
[Date/Time=06-14-2004 - 8:50 PM] Name:Barney C Black email@example.com, [Msgid=664292]
I've already reupolstered the and put that back on tonight just to get a glimpse of the completed look.
Spent Sunday at the lake with my brother being beaten to death by a couple of old school stand-up jetski's. All I could think of the whole time was, "Man, wouldn't it be nice to be up above all this wind chop and boat wakes!"
[Date/Time=06-15-2004 - 12:47 AM] Name:Todd Miller firstname.lastname@example.org, [Msgid=664352]
The Dynafoil I'm working on has turned into quite a project. The PTO drive (gearbox unit) that is located just aft of the engine was full of water instead of 90w gear oil. The seals and bearings are all shot, but the gears and other drive components, as well as the water pump, are all fine. The gear housing for the prop was also full of mostly water and the upper bearings for the long vertical driveshaft were also bad due to water contamination.
The good news is that all of the seals and bearings are fairly standard items and the local bearing/seal place can get them. Some they had in stock, others will be here in a week.
The fuel filler cap mounted to the starboard side bow was seized, but the entire assembly turns out to be a common boat part, so I purchased a new one locally and have it riveted back in place.
The NOS engine and carb are sitting here waiting to go in. Even have a new "saga" coupler that joins the engine to the PTO drive sitting here. A company call "Lovejoy" in Illinois is still making them.
While I wait for bearings and seals I'll attend to the cosmetics and make new bunks for the trailer to replace the existing rotted ones.
That's about it for now.
[Date/Time=06-17-2004 - 8:43 PM] Name:Todd Miller email@example.com, [Msgid=665724]
The Dynafoil is done and I've just returned from a quick float and fire-up at a nearby lake. Didn't leave the dock at the boat ramp, but did get it running, but it won't idle. Minor adjustment there I'm sure. I brought tools, but was under a time crunch, I couldn't play with much tuning/tweaking.
The bilge pump didn't work but I just got it working and put back in. No leaks that I could find, boat wise. The radiator cap is letting water squirt out of the little overflow tube for some reason. The cap looks perfect and I can see the line where it seals against the filler neck, so I don't know why it's doing that.
I lowered the rear strut/outboard drive, but couldn't get the prop to spin so maybe the drive wasn't all the way down to engage the 2 fingered cogs with each other. I am getting drive through to the cog in the bottom of the hull where the outboard meets, so I'll have to investigate that further too.
I'm doing some little tweaking now and will probably go back up in a bit.
[Date/Time=06-25-2004 - 4:46 PM] Name:Todd Miller firstname.lastname@example.org, [Msgid=669968]
Image Attached: "Dynafoilsinwater.jpg" Click Here To View
[Date/Time=06-29-2004 - 8:08 PM] Name:Barney C Black email@example.com, [Msgid=672135]
Just the one with the black handle bars and seat is completed. The other one is still "as found," so it's pretty rough, but should polish and paint up nicely.
I've had mine in the water 3 times now. Still no joy as far as riding it goes. I appear to be battling a carburetor issue because any amount of throttle just makes the engine bog and then it dies. All 3 of our Dynafoils were missing their carbs and airfilter assemblies, so we've had to start from scratch. I found an NOS Walbro WDA-6 (41mm) which is what the 440cc engine model came with. However, I've installed an NOS 340cc engine, so this may be too much carburetor.
I've just found an NOS WD-6 (38mm) and am installing that, so that may make a difference. The carb for the 340cc model is apparently a WRA-30, but I don't know what size that carb is, nor do I have a source for one.
I'm also still battling a power supply problem to the bilge pump. I hope to have that handled by tomorrow.
[Date/Time=06-30-2004 - 12:35 AM] Name:Todd Miller firstname.lastname@example.org, [Msgid=672262]
[Date/Time=06-30-2004 - 7:12 AM] Name:TIM GRAY TIM@DAIRI-PAK.CO.UK, [Msgid=672323]
Image Attached: "A725184_1.JPG" Click Here To View
The dynafoil took flight for the first time this afternoon.
Still a bit slow on the take off, but with a the smaller Walbro WD-6 (38mm)carb there was a noticeable difference and I was able to get up to flying speed. Once out of the water, the engine performed great and throttle response was fine. I have a bit of tweaking to do with the carb adjustments and hopefully that will make all the difference.
It was really fun to ride. Very stable like a Seadoo/Waverunner, but with sort of a motorcycle feel.
It was late in the afternoon so the light was bad for photos, but here's a shot at speed.
[Date/Time=07-02-2004 - 12:56 AM] Name:Todd Miller email@example.com, [Msgid=673541]
Image Attached: "Ridingatspeed.jpg" Click Here To View
You might contact Maritime Dynamics of Maryland, USA. They are a subsiduary of Vosper Thorneycraft UK. at the below addresses.
Maritime Dynamics, Inc.
21001 Great Mills Road
Lexington Park, MD 20653 USA
Tel: ? (301) 863-5499
Fax: 1 (301) 863-0254
Cell: 1 (240) 925-9787
Directions to MDI (PDF)
European Sales Office
Vosper Thornycroft Marine Products, Ltd. Hamilton Road Cosham
Portsmouth P06 4PX UK
Tel: ?4 (0) 23 9253 9750
Fax: 44 (0) 23 9253 9764
They specialize in ride control, but can also put lift into the foil system.
There are others who can probably help, but MDI has a solid reputation for over 20 years.
[Date/Time=07-12-2004 - 2:43 PM] Name:Bill White firstname.lastname@example.org, [Msgid=678252]
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