I have a question about the thickness of the tailing edge section. This photo of Richard Shirley's trailing edge shows a blunt profile. http://www.bouyea.net/gathering2004/P1002293.jpg
The Cirrus people told me this is done to improve the feel at higher rates of speed. (Interestingly, both Cirrus and Richard have aluminum ailerons.) Most of the KRs I have seen have very thin (i.e. sharp) trailing edge sections. Does anyone know definitively about what this type of change might do to the standard RAF airfoil? John Bouyea KR2/ Hillsboro, Oregon http://www.bouyea.net <http://www.bouyea.net/>