Pmaggie, I can explain my design very easily. A standard single lateral foil has very little stability on its own. Foil makers decided to add a second unstable foil at the back, so it’s a balancing act between lift and AOA on both unstable foils. For forward stability it’s just like a boat,surfboard...

Thanks Iridian.
Email replied. I’m happy to give away any secrets I might have.

Hi Iridian, I’m always testing my Low Aspect foils. Pity I can’t post pics direct on this forum and you can see the trouble leaving them in Photobucket has brought. I’ve worked out a single foil shape that fits onto a single mast/strut and is suitable for beach breaks. I think the foil industry is s...

Stability is the new black as speed is a personal and environmental choice.
Foils can be a lot smaller and less width if the chord increases.

Thanks for your comments guys, its good to know I'm not talking to myself ! Here's a bit more on foil design... Ive seen all the complex calculations to do with the foiling all things that go in the water, from the very complex NACA designs and consideration of lift Vs drag And I compared the lift V...

The blue one at 11 o'clock is one of the extra small one at 8" wide X 18" long with 118 sq in. The yellow one in the middle has a total area of 277 sq in but that includes the side arms (@58 sq in), the middle section and the angled beams that connect the middle to the side arms. Everything is measu...

Thanks for the comments guys. With the twin foils I did play around with AOA all the time as well as setting them at different heights so the front foil didn't create turbulence for the trailing foil, but now with a single foil there's no AOA , just parrallel to the hull, it makes it easier to know ...

Thanks Hawaiis, heres a bit of theory of mine. Any shape can be used for a foil and the shape carries its performance characteristics...wider foils are more stable side to side and longer foils are more stable nose to tail, but how do you work out the best dimensions ? Over the past decade this is w...

You're all right, those foils are mine and the struts need to be an appropriate length for the application. Here's some more of mine or if you google Shortboard hydrofoil there's more there in Images. http://i1364.photobucket.com/albums/r734/clintsca/ef33ef94bcf207dd421ca952907f2cfa_zps0374d1d5.jpg ...

ronnie wrote:

Kamikuza wrote:What's with the tridecker fins?



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Ive been using foils like this in the surf but instead of two lateral hoops I'm using one longitudinal hoop. The longer the longitudinal section the more stable the lift.