I've got one that has a K & B .20 on it. You take off with the wheels or hand launch, either way. Getting it down is the biggest problem. It wants to float forever. I used standard servos in mine and they worked fine. It's a nice change of pace flyer, slow and leisurely. Only thing I could suggest from previous experience with another powered glider, don't let it get downwind without power to get back to the field. (don't ask how I learned that!)