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by lightandfrost
Fri Sep 08, 2017 1:21 pm
Forum: Kitesurfing
Topic: Kites and the Magnus Effect
Replies: 0
Views: 306

Kites and the Magnus Effect

We were told that prior to Jim Drake the father of windsurfing died in 2012 he was talkng about a new type of kite that spun. Drake might have been looking at rotor kites using the Magnus Effect. Whether enough traction can be obtained is the question but boats have gone across the Atlantic using th...
by lightandfrost
Fri Sep 08, 2017 12:55 pm
Forum: Foil Kites
Topic: What is the absolute lower end a foil keeps in the air?
Replies: 13
Views: 1708

Re: What is the absolute lower end a foil keeps in the air?

Once the wind speed goes below riding speed and you are in the water keep the kite directly overhead, depower the kite fully with the power strap. If the wind allows fly it back and forth. If the kite starts to fly forward over your head pull the bar down. If the kite starts to backstall reach up an...
by lightandfrost
Fri Sep 08, 2017 12:21 pm
Forum: Hydrofoil Builders
Topic: Epoxy Gloss Coats How To
Replies: 9
Views: 717

Epoxy Gloss Coats How To

Getting a high gloss finish using epoxy can be difficult and most surf how to sites do not suggest epoxy. However we came across this novel method in a woodworking section. We are going to try this with masts and wings. See DIY- How to apply "Liquid Glass" Epoxy Resin on almost any surface. https://...
by lightandfrost
Mon Aug 28, 2017 6:45 am
Forum: Hydrofoil
Topic: Foot hooks question
Replies: 15
Views: 1623

Re: Foot hooks question

Alternatives to foot hooks Light and Frost has been testing alternative solutions to foothooks. Currently if the footstrap is a single inline front strap we prefer the following strap solution. The normal footstrap plug position is 18 cm from front footstrap plug to rear footstrap plug. We expand th...
by lightandfrost
Mon Aug 28, 2017 6:21 am
Forum: Hydrofoil
Topic: Curved Masts and vortex generators on hydrofoils
Replies: 10
Views: 1531

Re: Curved Masts and vortex generators on hydrofoils

First thanks for all the commentary. We will try and answer as we can. We placed this thread in the general section in the hopes others would experiment. Light and Frost has no contact with any board/foil/kite manufacturers. We are interested in developing foil/mast/board systems for the extreme ons...
by lightandfrost
Mon Aug 07, 2017 10:45 am
Forum: Hydrofoil Builders
Topic: Resources for small carbon repairs
Replies: 8
Views: 909

Re: Resources for small carbon repairs

Superglue General To repair dents and cracks in airplane propellers to include surfboard dents masts etc, superglue can be used. First fill the dent with superglue, then sprinkle finely ground Sodium Bicarbonate(Baking Soda) on the surface of the glue. The glue instantly hardens 5 times stronger the...
by lightandfrost
Mon Aug 07, 2017 7:14 am
Forum: Hydrofoil
Topic: Curved Masts and vortex generators on hydrofoils
Replies: 10
Views: 1531

Re: Curved Masts and vortex generators on hydrofoils

Light and Frost tested a 70 cm mast with vortex generators(vg) mounted on both sides of the mast in flat water to extremely rough beach breaks and chop. First no negative effects were seen. Further comparative tests were run with two(2) Speed II 19 meter kites on flat water. Both kites' line lengths...
by lightandfrost
Sun Jul 23, 2017 3:26 am
Forum: Hydrofoil
Topic: Curved Masts and vortex generators on hydrofoils
Replies: 10
Views: 1531

Curved Masts and vortex generators on hydrofoils

Light and Frost is a nonprofit research group interested in developing equipment for the onshore wave riding environment. Previously we developed wave twins for wave riding and alterations in ram air profiles into what we called a death glider mod to provide constant power when moving upwind thru a ...

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