My Joss stik should be here friday, and while I was thinking about the os 91 fx, I am convinced (you guys convinced me) that the magnum is just as good and cheaper. I called magnum about Hp figures, they said all those numbers are bogus....and they did not have them to supply (weird, or confident) , anyways, what size gas motor wood pull the Joss around w/o pulling the fire wall off or making it weigh 25 lbs...is it too small of an airframe for gas.....I do not gas engine sizes..thanks