I am keen to try a twin tip first and then to progress onto a directional hydrofoil.
I am interested to get wings that will make it easy to get used to riding on a twin tip hydrofoil. At this stage I am not interested in any high performance. As long as it is easy and goes upwind.
Having read your profile, I see you like me are a certain age so please understand all that I say now is only ment to be productive and for your saftey.
Trying to learn on a TT KBHF is not a good idea at this time.
I have test flown probably the best designed one at this point and I can tell you it is MUCH harder than a DIR KBHF.
Consider this, have you ever seen an airplane that flys both ways?
It is simply very difficult to make a flying object stable to fly both ways.
And you must have 2 straps for a TT KBHF, not good to learn with.
The board does not have them same volume es a DIR so the water start begins with the whole assembly under water.
Please believe me I am a confirmed KBHF pilot and design builder and at this time TTs are a long way off.
I know of 2 funded projects that were abandoned because they failed!
This TT was conceived by FK24, the one I tried.
FKTTjump.jpg [ 97.93 KIB | Viewed 1521 times ]
FK24 is "the man" at this point when it comes to innovation of KBHFs and a very skilled pilot.
He has built many TTs and says the A O As are super critacal. like +,- half a degree.
Wing profiles and shapes, sizes are also not dialed in at all.
But for sure flat without some sort of vert fin is not going to work well, very yaw unstable.
With a DIR you have the tail assembly acting as a stablizing component, you do not have this with a TT as is sym.
We know flat wings simply suck, without some sort of vert element and this is even more apperent with a TT.
Just a quick analogy,
IMHO learning to foil with a present day TT design as compared to a good DIR is like trying to ride a unicycle before a bicycle!
I will, am building a TT just for the challenge knowing that it is way unstable and super sensitive both to fly and build.
Wil,or anyone else, please do not risk your safty by trying to learn on an home built, untested TT!
I have all the design specs from FK but no need to share them now as they are a long way off from being user friendly.
MAYBE......with lots of trial and error by confirmed pilots and a thicker banana TT board with angled side foot hooks so that the inevitable crash is safe this can be fun???
Even FK is not happy with his builds and maybe the idea at the base is flawed?
@HW, if your TT flys and you can ride it? please post some video and , or photos.
If anyone is still up for lots of tuning, time, crashes, Fk24 has allowed me to share his lattest design in the spirit of progressing this idea.
In closing, I don`t want anyone getting the wrong idea that you can attach a not WELL designed, well thought out, TT foil assembly and go learn, you risk getting hurt, badly!