Someone correct me if I am wrong but my impression was that we have differential ailerons, so their up travel will be different from their down travel, just so long as both sides are the same. This is used to counter adverse yaw.
Colin & Bev Rainey KR2(td) N96TA Sanford, FL crain...@cfl.rr.com or crbrn9...@hotmail.com http://kr-builder.org/Colin/index.html