> B. Lengthened the frame by adding 2" at each station to reduce the > porpoising PIO that has been mentioned.
Stephen, This looks like a dream plane, but there's one little area of concern. If you also add 2" to each bay in FRONT of the main spar, you've added several inches. This would make it awfully nose heavy, especially with a heavy engine. A Corvair or other heavy engine needs to have the forward fuselage are to be built per plans without stretching. Any extra will probably lead to a CG problem . I doubt you meant that, just clarifying. I hope you don't have your heart set on 500 pounds... Mark Langford, Huntsville, AL N56ML at hiwaay.net see KR2S project N56ML at http://home.hiwaay.net/~langford