Ronald Metcalf wrote: > I am interested in the strange "tuck" underneath the trailing edge - the > last few mm seem to droop down leaving a concave area right at the back > (underneath).
I'm not sure what the question is, but I can tell you that the Lionheart was originally designed using NACA 64 series airfoil with a similar cusp. After the wings were built, it came out that the cusp tended to make the ailerons feel heavy. The upwards pressure also loaded the entire aileron control system to some extent. Larry later retooled them to delete the cusp, and it did lighten the aileron feel some. I have no idea if this has any application to our airfoil or our airplane, but I intend to find out once I'm flying. I'm not planning on painting my wings for a while until I do some serious testing on stuff like this. Of course, on my plane, the ailerons are a fairly small percentage of the trailing edge, but KRs built with the stock planform are are much larger percentage. Still, the fix would be fairly simple to accomplish, if it proves to be something worth doing. Mark Langford, Huntsville, Alabama N56ML "at" hiwaay.net see KR2S project at http://home.hiwaay.net/~langford
