If you read the article on the new KR airfoil it mentions Troy Petteway's 4" increase in tail area and the stubstantial improvement in handling with no performance penalty.
http://home.hiwaay.net/~langford/airfoil.html The article attributes some of that improvement to the new airfoil but in fact the airfoil has very little to do with pitch stability. It all comes from the tail. A lot of people think that "most homebuilts are sensitive in pitch" but there is no reason why that has to be the case. Add a bit of tail area and the sensitivity will go away and the airplane will be safer and more fun to fly. >>What you need to do is go to KRnet and read Bill Reents acount of flying >>the KR-1 for 21 years. Before he flying it he taxie dit fo 10 hours to get the pitch feel
