I've been having some trouble sourcing the original Diatone Mamba motors for this plane so I gave this a shot and so far I'm pretty happy with it. This is from raceday quads. EMAX ECO 1407 3300Kv Micro Motor From the photo you can see old sparky sitting in the foreground. The dimensions of this new motor are almost identical. I didn't have to shim anything for it to even fit the original cowling.