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by lightandfrost
Thu Jan 24, 2019 4:05 am
Forum: Foil Kites
Topic: Inherent Stability of the Ozone Hyperlink
Replies: 2
Views: 613

Inherent Stability of the Ozone Hyperlink

My friend was riding a Ozone 12 meter Hyperlink V1 kite near some other kite surfers. One of the other riders looked around saw my friend floating in the water face down unconscious breathing H20, however the Ozone Kite was so stable that it was gently flying uncontrolled overhead the drowning rider...
by lightandfrost
Sat Jan 19, 2019 2:49 am
Forum: Gear Builders
Topic: Flying Wing Commentary
Replies: 6
Views: 1112

Re: Flying Wing Commentary

To Horst Sergio Your work is held in high regard here. Reference stiffness. The smoothest wings L&f ever made had some flex much like standard aviation wings. Unfortunately a stress crack began to form along the major flex point. These wings were intentionally constructed to have this flex and were ...
by lightandfrost
Fri Jan 18, 2019 4:01 am
Forum: Kitesurfing
Topic: Cloud Kites A Caution
Replies: 28
Views: 2693

Re: Cloud Kites A Caution

To clarify some points. 1. The flight performance of the Cloud series is excellent. Buy one and test it yourself. 2. The kites were obtained outside the USA. 3. A request for spare parts was sent to the company. 4. The bladder valves in these kites in our possession delaminated. Also bladders explod...
by lightandfrost
Fri Jan 18, 2019 3:01 am
Forum: Gear Builders
Topic: Flying Wing Commentary
Replies: 6
Views: 1112

Re: Flying Wing Commentary

L&f have completed step one in a flying wing project. A basic flying wing shape has been constructed without the reflex or elevons. This wing with standard stabilizer will be tuned and tested for functionality for a number of hours. If the wing is suitable the reflex(elevons) will be added having 1/...
by lightandfrost
Thu Jan 17, 2019 7:12 am
Forum: Kitesurfing
Topic: Cloud Kites A Caution
Replies: 28
Views: 2693

Cloud Kites A Caution

If you are considering purchasing a Cloud kite we provide the following caution. First there is nothing wrong with the design. These kites fly fine. However this kite requires high pressure to function properly. The designers own videos suggest pumping the kite with a hand pump until you can barely ...
by lightandfrost
Tue Jan 01, 2019 2:52 am
Forum: Gear Builders
Topic: Beaver Tail Alternatives
Replies: 2
Views: 605

Beaver Tail Alternatives

Light and Frost(L&f) has been studying and testing the addition of a beaver tail to the hydrofoil fuselage. It was decided to add the beaver tail as a fuselage extension with a zero(0) angle of attack rather then replace the stabilizer with a beaver tail. These board/mast/hydrofoil mixes without bea...
by lightandfrost
Sat Oct 06, 2018 1:59 pm
Forum: Gear Builders
Topic: Flying Wing Commentary
Replies: 6
Views: 1112

Flying Wing Commentary

Removing a hydrofoils stabilizer and riding the stock wing ie riding stabless increases the control requirements of the rider as the wing is unstable since nothing counters the wings center of pressure as it moves around the center of gravity. Furthermore there will be limits to the wings ability to...
by lightandfrost
Sun Sep 09, 2018 6:06 am
Forum: Hydrofoil
Topic: Holes in aluminum mast
Replies: 20
Views: 2100

Re: Holes in aluminum mast

You can restore the mast however it will be slightly shorter and heavier. Cut the mast below the bend Fill the mast with epoxy resin and silica powder. You can fill the whole mast or just the first 20 or 30 cm. Suggest you just fill the whole mast as the aluminum strength is already suspect. Remove ...
by lightandfrost
Wed Sep 05, 2018 3:52 am
Forum: Foil Kites
Topic: Flysurfer Sonic FR 15 Meter Tip Fold Problem Solved
Replies: 11
Views: 1768

Re: Flysurfer Sonic FR 15 Meter Tip Fold Problem Solved

As mentioned the kite flew for approximately 40 hours with no further wing tip fold. However this kite was launched in an onshore wind in very restrictive space due to higher tides and up against approx a 100ft tree line. Since wind begins to separate from the water surface at a 10 to 1 ratio from t...
by lightandfrost
Sat Sep 01, 2018 8:20 am
Forum: Foil Kites
Topic: Flysurfer Sonic FR 15 Meter Tip Fold Problem Solved
Replies: 11
Views: 1768

Re: Flysurfer Sonic FR 15 Meter Tip Fold Problem Solved

Reference the kite mentioned at the beginning of this post. After clearing the vents from station 11-12 on the line plan to the drain tip a third time, the tip fold problem has not returned after four days of heavy use. Previously the kite had this problem every day used for the last 4 months or fro...

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