After the winter period I picked up the Speed again to try and improve it using the skin tuck method. As foilholio’s approach appeared the most nuanced to me, I tried it on the outer 6 cells, by placing a tuck over the width in the center of the cells of about 0.8-2 cm. Where the 2 cm tuck is on the cell closest to the center. I tapered it off to zero towards the profile connection sew lines on the cell. At the moment everything using duct tape, just to experiment.
Actually I was positively surprised with the effect of this, in my view, rather subtle change, the handclapping is completely over!
As the wind was rather gusty today, the other problem, was even more pronounced however. The arc rises quickly up in the sky but especially if there is some tension on the rear lines flaps with the nose in the wind, inverting the kite. So no solution for that issue yet.
Should I just continue with making some bigger tucks over the width into the middle of the kite for this issue? My impression is that it starts mainly in the middle of the kite.
Some words about the aerodynamics about the solution is also highly appreciated, I would really like to understand why a specific shape change could resolve it.
Curious to hear your thoughts!