It turns an 18/6@6500 RPM, it actually used to do 7000 RPM, I am not sure why I have lost power, could have something to do with messing with my carb and not getting it back to "Just right" but at 6500 it flew the 25lb 96" stick very well. The Stick would do inverted flight, loops, rolls, wing overs, etc, not alot of vertical, but enough to do the manouvers like I said.