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by kitexpert
Wed Jan 09, 2019 2:09 pm
Forum: Foil Kites
Topic: Flysurfer, bring back the Psycho 4
Replies: 8
Views: 600

Re: Flysurfer, bring back the Psycho 4

Last winter I had a session with 6m P3. My friend has had it from the beginning and it is in very good shape, used only in snowkiting by a light weight kiter. It was fun to see old kite like a new, all white parts of the fabric were still bright white and it felt crispy. I was looking forward to tes...
by kitexpert
Wed Dec 26, 2018 6:37 pm
Forum: Foil Kites
Topic: Flysurfer Peak 4
Replies: 73
Views: 7255

Re: Flysurfer Peak 4

Is the peak 4 not reverse launchable? Seems like the way to go. For sure it is on dry land/snow, but if it collects water inside LE chute relaunch will be difficult if not impossible. I use frequently single skin kite when snowkiting, one of the biggest benefits is very easy handling and relaunch o...
by kitexpert
Sun Dec 23, 2018 4:31 pm
Forum: Hydrofoil
Topic: Does board volume still matter for water starts?
Replies: 36
Views: 3589

Re: Does board volume still matter for water starts?

It is all about acceleration by kite to speed and board area to displace water when moving. Not the volume. Not all about. Volume can help water starts. With hf's most people don't want to use big kites so when diving the kite there is not that much power. If board has no volume it sinks (esp. with...
by kitexpert
Thu Dec 20, 2018 9:06 pm
Forum: Gear Builders
Topic: Hydrofoil mast wooden precision part?
Replies: 8
Views: 705

Re: Hydrofoil mast wooden precision part?

If you are making glassed wood mast it is not that critical, then you will have quite a lot thickness and chord in it and it won't be a low drag mast. But don't worry, it will still work fine and it will be fast enough until you want/need something better/faster. Shape can be some hydrofoil, just de...
by kitexpert
Thu Dec 20, 2018 8:45 pm
Forum: Foil Kites
Topic: DIY Foil Kites
Replies: 232
Views: 43333

Re: DIY Foil Kites

Laid flat, the LE is very curved at the ends. The TE is much flatter. Ok, just try to get your model in SP as close as possible to same as your kite is. Then you will have as precise bridle as possible. The picture in the lines plan, that you also have is not accurate and is laid flat anyway. It is...
by kitexpert
Wed Dec 19, 2018 3:48 pm
Forum: Kitesurfing
Topic: High Pressure kite by Bruno Legaignoux
Replies: 155
Views: 17169

Re: High Pressure kite by Bruno Legaignoux

Why the focus on a Thin LE and single skin for high performance? We need to aim for a clean as possible proper profile shape, just like aeroplane and hydrofoil wings. That's the reason hanggliders can go much faster and are more effecient compared to paragliders. Single skin won't come even close, ...
by kitexpert
Wed Dec 19, 2018 3:36 pm
Forum: Kitesurfing
Topic: High Pressure kite by Bruno Legaignoux
Replies: 155
Views: 17169

Re: High Pressure kite by Bruno Legaignoux

So when you double the size of the diameter of a rope, let's choose some sampson asmsteel ropes for example, the 1/8th inch rope (3mm) is 1,100 pounds, while the 1/4 inch rope is 3,900 pounds. double the diameter means 4 times the strength not 8 times. But that is strength for pull not stiffness. T...
by kitexpert
Wed Dec 19, 2018 2:57 pm
Forum: Foil Kites
Topic: DIY Foil Kites
Replies: 232
Views: 43333

Re: DIY Foil Kites

That is a good start, many things are correct. I made the width of the panels proportional to chord which is a good approximation of the real canopy Ok, and you can adjust also the level of proportional. If it 100% all cells have similar width/length ratio, if 0% spacing is equal (cell width is cons...
by kitexpert
Tue Dec 18, 2018 9:41 pm
Forum: Foil Kites
Topic: DIY Foil Kites
Replies: 232
Views: 43333

Re: DIY Foil Kites

Seam allowances are inside the cells of course. On the outside I also did an extra sew, afterwards, I packed the whole in the inside out of the kite, with about 6 needles as marks, sewed and pulled the kite out from that salami :) Just right :thumb: Indeed the As are not at 0 but few centimeters in...
by kitexpert
Tue Dec 18, 2018 8:17 pm
Forum: Snow / Land
Topic: When is "Big" too big?
Replies: 25
Views: 2174

Re: When is "Big" too big?

15m Flysurfer foil kite will blow your LEIs away in terms of power winter and summer. Power is problem only if wind is very low. When snowkiting power or kite size are not very relevant unless you are not racing or surface is soft or sticky. Jumping with big foil kites in low winds is quite patheti...

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