I used a hangar 9 ultra stick 120 engine mount. That way i could slide the motor forward or back for CG purposes. I used an MDS 1.48 with an 16*8 prop. Cg perfect, weighs 11.7 lbs. Flys great. I am going to start moving the C.G. back a little after i get more comfortable flying this plane. I made a second access panel to reach the springs for the aft part of the wing, works great. I really don't have anything bad to say about this plane other than the white covering. Consider price and performance i can live with the covering.