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by gbrungra
Wed Jul 10, 2019 8:42 pm
Forum: Hydrofoil
Topic: Zeeko Spitfire Hydrofoil
Replies: 660
Views: 142178

Re: Zeeko Spitfire Hydrofoil

Good to see people experimenting w new foil setups.
by gbrungra
Tue Jul 09, 2019 1:24 am
Forum: Hydrofoil
Topic: Gin Marabou
Replies: 7
Views: 1022

Re: Gin Marabou

Perfect middle ground between lei/double skin foil kite/ single skin?

Is water relaunch as good as the hyperlink and soul?
by gbrungra
Tue Jul 02, 2019 3:19 pm
Forum: Hydrofoil
Topic: Speed Record for hydrofoiling ?
Replies: 28
Views: 2505

Re: Speed Record for hydrofoiling ?

The fastest motorboats are non-hydrofoil. They skim the surface like a kiting speed board. Even sail rocket was not fully foiling. 1-2 of its points of contact were skimming, with no foil at all. It only used a foil for lateral grip on the water, not lift. And its lateral grip foil was super-cavitat...
by gbrungra
Sat Jun 29, 2019 5:44 am
Forum: Hydrofoil
Topic: Wake Surfing question slingshot 82
Replies: 6
Views: 251

Re: Wake Surfing question slingshot 82

Slingshot sells a different stabilizer (48cm wide, instead of 42cm) to go with the Infinity 84 wing. If you look at the full package w infinity 84, it has the larger stabilizer, and it is mounted underneath the fuselage instead of on top. AND, the mast is shifted backwards on the fuselage (windsurfe...
by gbrungra
Mon Jun 24, 2019 3:07 am
Forum: Hydrofoil
Topic: new Peter Lynn Synergy single strut kite
Replies: 3
Views: 642

Re: new Peter Lynn Synergy single strut kite

Plenty of marketing hype...

"Internal wing profile"?

If trying to compete for lightest wind LEI kite, they should have posted weights for each size...
by gbrungra
Sun Jun 09, 2019 8:32 am
Forum: Hydrofoil
Topic: Wing loading as a metric
Replies: 21
Views: 1203

Re: Wing loading as a metric

It is a lot smaller, so not much influence. And the back wing reduces overall lift, as it pulls a bit down, negative lift usually. 8) Peter Sometimes it is not a lot smaller. When I use the speed wing in the front, the back wing looks about 2/3 the size of the front wing. And regarding the negative...
by gbrungra
Sun Jun 09, 2019 8:27 am
Forum: Hydrofoil
Topic: Narrowest upwind channel?
Replies: 3
Views: 387

Re: Narrowest upwind channel?

Duck-tacking vs no foot switch (heelside/toeside alternating)

Yes, probably easiest to train for the challenge in open water.

The real goal is to be able to maneuver in tight spaces as well as a sailboat, opening up new navigation options.
by gbrungra
Sat Jun 08, 2019 6:45 am
Forum: Hydrofoil
Topic: Narrowest upwind channel?
Replies: 3
Views: 387

Narrowest upwind channel?

Challenge: what is the narrowest channel in which a kiteboarder could still up upwind?
(wind direction is directly down the channel)

Let's say zero tide/current

What is the optimal gear?

What is the optimal windspeed?
by gbrungra
Sat Jun 08, 2019 5:58 am
Forum: Hydrofoil
Topic: SUPfoil touring
Replies: 4
Views: 436

Re: SUPfoil touring

So let's call Hawaiian style an "open ocean downwinder" and come up with a different name for my idea. "Coastal downwinder"? "Down sweller"? (Because there doesn't need to be wind, just waves?) 2. Is is possible to do a coastal downwinder while staying (mostly) up on foil? 3. Is is possible to do a ...
by gbrungra
Sat Jun 08, 2019 5:50 am
Forum: Hydrofoil
Topic: Wing loading as a metric
Replies: 21
Views: 1203

Re: Wing loading as a metric

Right, rear stabilizer is negative lift (pushes down).
Front stabilizer is positive lift (pushes up).

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