Wow. There was like 5 responses to this thread in the time it took me to type mine. 1100 lb\ft of torque will break every drive I have tried. The ones I build included. I haven't tried the scx so I can't comment on that. Keep the power under a 1000 and they live. There is a reason Mercury goes to the NXT at 700 hp. They aren't as hard headed as the rest of us.