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by kitexpert
Sun Jul 29, 2018 10:05 pm
Forum: Hydrofoil
Topic: 2018 Airush Core Foil - Overview & Test (Video)
Replies: 8
Views: 1216

Re: 2018 Airush Core Foil - Overview & Test (Video)

Very nice foil. Well designed and executed product. Ride was quite easy and it sure goes fast, perhaps too fast for my taste/skills. It whistles though but I wasn't too disturbed.
by kitexpert
Sun Jul 29, 2018 9:58 pm
Forum: Hydrofoil
Topic: Zero Flex DIY little foil board
Replies: 24
Views: 1765

Re: Zero Flex DIY little foil board

Make a thick foam board with double stringers (also gives good strength for foil attachment). Wide carbon strips on both sides on top of the stringers, then usual glass on top. If it will be thin board using carbon is best way to make it stiff. Core is not that important, it can be plywood. Board th...
by kitexpert
Sun Jul 29, 2018 9:44 pm
Forum: Hydrofoil
Topic: Straps or strapless poll
Replies: 40
Views: 1910

Re: Straps or strapless poll

One or two or three straps, or hook(s): Count 0
Strapless: Count 6
by kitexpert
Fri Jul 27, 2018 11:58 pm
Forum: Hydrofoil
Topic: Marginal wind kites ?
Replies: 90
Views: 20528

Re: Marginal wind kites ?

40 degree difference makes 200g per m3. I know 40 degree is little extreme but just little :) So in 3m3 kite it CAN be 600g uplifting force. I know this is very optimistic estimate but even half - 300g can make difference - especially in full line slack situation. At 30 degrees air density is 1.16k...
by kitexpert
Fri Jul 27, 2018 8:10 pm
Forum: Hydrofoil
Topic: Marginal wind kites ?
Replies: 90
Views: 20528

Re: Marginal wind kites ?

I think that AIR mass traped in kite is much dominating factor to kite reaction but maybe im wrong. Also in mediterran sun air in kite is very hot and now im believer in hot air baloon effect which keeps kite stable on zenit. I has very surprised about air temperature in it. It was like 60-70 hot. ...
by kitexpert
Fri Jul 27, 2018 7:28 pm
Forum: Hydrofoil
Topic: Mast Position?
Replies: 11
Views: 859

Re: Mast Position?

I also ride the same setup, 3'6 & 150 wing w/ a single strap in the forward position. I have the mast set @ the 3cm from rearmost position. My opinion after adjusting it several times, is further rearward increases rear foot pressure. Which certainly can get uncomfortable after an hour or so. This ...
by kitexpert
Fri Jul 27, 2018 9:54 am
Forum: Hydrofoil
Topic: Mast Position?
Replies: 11
Views: 859

Re: Mast Position?

Main thing is how you feet are in relation to the front wing. It creates the lift, the force you must control and balance on with your body (weight). Feet placement in relation to mast is a result of that. If you check Drexler videos you can see front wing is in between his feet. Because he uses suc...
by kitexpert
Thu Jul 26, 2018 7:06 pm
Forum: Hydrofoil
Topic: Mast Position?
Replies: 11
Views: 859

Re: Mast Position?

Don't over complicate it. Whether your back foot is on top of the mast or slightly behind it depends mainly on the location of the front wing and your stance width. General rule which I've noticed true is that front wing is between your feet. But because mast - front wing distance varies in differen...
by kitexpert
Mon Jul 16, 2018 7:53 pm
Forum: Foil Kites
Topic: Foil Kite tuning tips
Replies: 14
Views: 1107

Re: Foil Kite tuning tips

You can adjust profile and flying characteristics by opening and closing an internal zipper that affects internal inflation pressure. That is true. To have it as strongly evident as it was in Psycho4 there are many things involved. At very low AoA (when fully depowered) stagnation point moves (part...
by kitexpert
Mon Jul 16, 2018 7:36 pm
Forum: Foil Kites
Topic: Flysurfer hard/soft steering line question
Replies: 14
Views: 742

Re: Flysurfer hard/soft steering line question

No, I'm starting to having enough of these BS corrections. I don't know why it should be me.

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