Thank you foilholio for your specifying comment. Sonic 15 has I guess at least three cubic meters of air inside of it, it weighs additional 3.7kg. What comes to thinner airfoils it is true volume and inertia of the kite decreases, but I don't think there is very much room to go downwards. And now th...

I don 't know if it is elegant to distort airfoil locally that way, it will make some kind of pleat in the skins too. If there was a sewing error by a fraction of that it would be unacceptable. But if something like that is needed and is in production it apparently works. However it would be good to...

Only small size foil kites are somehow comparable to LEI's when it comes to turning speed. Big foil kites are always slow to turn and react because they are so heavy, they have so much inertia. In park-and-ride this of course doesn't matter, then higher L/D of double skin foil kites shows its effici...

I did many years ago rebridling and conversion to 4 line in one of these kites. Turning became better and bridle drag perhaps was cut 50%, I don't remember exactly. Those days FS used ridiculously long bridle lines... I used to call it Psycho2.5. I also designed it a bit different canopy curve, more...

Would be great if this vid is translated to English with subtitles. Just a thought. Absolutely. I don't understand much what this guy says in the video, but it shows airfoil shape (apparently of Soul) and how that internal camber adjustment works. Airfoil looks thick and it has considerable amount ...

The Soul is unfortunatelly not a very light kite ; that may be detrimental to extreme light wind for light riders. Internal construction including oval openings in inter-cells and profile adjustment inside the kite are very interesting . It is more light weight kite than Speed5, however. Compared t...

One possibility is to forget all moderateness and to design a kite that breaks many limits. These high cell count kites are also more interesting to design.

If I had to make a name for this one I'd call it Diesurfer Ghoul

A bit more canopy curve and some tweaking here and there, and playing with colors

C-line row H-ribs is a question, with or without them. I'm thinking having a bridle on every second rib should be good enough, saving some weight and work.

It seems H-ribs are more often used than D-ribs nowadays, like it is in Soul. There is lot of holes to reduce weight in horisontal parts of ribs. Canopy curve has changed quite a lot from what is used to be. Long time ago curve was more on wingtip area, now wingtips are less curved. I like aesthetic...

I've been designing mid AR kite with relatively high cell count, but not too high to keep the amount of work reasonable. Specs are quite close to Hyperlink but below FS Soul, also because of this kite will be small/mid sized. Kite has quite a lot canopy curve for faster and less pivotal turning and ...