I've got one of these too and it is all Mike Wiz says. A YS 63 powers mine (at about 1/2 throttle most of the time). The rudder authority on this plane is unbelievable! I was also surprised when I easily did my first knife edge loop with this plane. Try doing flat turns with full rudder input, it does it in about 30' diameter circles! You wouldn't expect this plane to fly inverted very well either, but it will do it easily all day long.

I can't wait to get the floats for it!

Jim