Had an old sensored astroflight 020 brushless on it... wasn't paying close enough attention and accidently hooked the battery charger to the motor :-( So needless to say it went poof. So I ordered a new sensorless 020 with a 20 amp controller. For a gearbox I'm running a astroflight superbox with a 3.21:1 ratio. Flys like a bat out of hell with unlimited verticle. For the prop, I was running an 11x6 pusher, because I couldn't reverse the sensored motor and the gearbox reverses the prop shaft.