Elias: I have thought about the different percentage and I actually don’t think it will make a big difference. As long as the turbulators are not too close to the LE and not to close to the highest point of the airfoil it’s probably ok. On a well-designed airfoil designed for a glider it probably will be more critical where the turbulators are located.

If the wingtips had been 12% as the original Addiction by Starcraft instead of 9.5% I would probably not have used the turbulators.

Henning