This is a tailless RC model with 5 deg wing sweep, 1.5 deg wing twist, an Eppler 182 airfoil, and AR =9 wing. The first flight shows inherently stable CG location (10% static margin) and the second flight is computer stabilized with 3.5% static margin. The unstable design glides further because the aft CG location allows the flaps to trim the aircraft with more camber and less drag than the inherently stable version with the CG more forward.