RE: cap 580 flatout
Oh. I didn't realize they were different. I am actually using a GWS 350C motor on a D (6.6:1) gearbox with the propsaver. I'm considering putting the stock motor it comes with in the 6.6:1 gearbox and getting a 12x6 or 11x4.7 prop for more thrust. THis thing flies a lot faster than my Nikitis Animal does, and I like it, but you can never have too much thrust.