teknologika wrote:Hi Scuba,
I haven't built any kite hydrofoils (yet) but I have successfully built a number of moth hydrofoils over the years so I can offer some advice.
Firstly ... you definitely can build a foil in a single session, my first T foils were a 4 hour wet lamination process from start to finish, done in 4 1hour stages (left skin, right skin, bottom skin, then bog join).
I would stay away from a balsa core, I used one in my first moth foil, and it added nothing, the foil broke and sank quickly to the bottom of Lake Macquarie.
I have written up a how to guide for moth foils on my blog which you might find useful ...http://www.teknologika.com/mothblog/wp- ... -Foils.pdf
As I mention in the document, you probably want a couple of layers of +/- 45 and 6 ish layers of uni. Just go 100% carbon, as everything else just adds weight at the expense of strength.
Glad I could help.tkettlepoint wrote:Bruce good to have you here. I have read your blog awhile back and your info is great. learn a lot of you.. thank you
This is a foil designed to self-regulate its depth. My guess is that it works off the water pressure at different depths.ozchrisb wrote:Thanks Bruce. I've been reading your blog too. Great to have you here! Any thoughts on doing a surface following kite foil? Would you even be able to counteract someones weight pushing in the wrong direction.
Would it be able to counteract? Maybe. It would all depend where the wand paddle was tracking the surface of the water. If it was right at the front, then if you leaned forwards (lowering the AOA) then, yes the wand would induce more lift as you would be lowering the hinge point and compressing in to the waters surface. That would be great at low speed to make the foil less prone to incorrect angle of attack when riding, however that would be really bad at high speed when you were leaning slightly forwards (deliberately) as the speed and the lift of the foil increases.ozchrisb wrote:Thanks Bruce. I've been reading your blog too. Great to have you here! Any thoughts on doing a surface following kite foil? Would you even be able to counteract someones weight pushing in the wrong direction.
The hobie tri-foiler canard based control system won't work as you don't have the separation between rudder and front hydrofoils that the hobie has.Bille wrote:The Hobie tri-foiler used a surface devise on their foil ; it looks
to work Ok. At .22 seconds, you can see how it works :
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