[lincpimp]

Startup loads would be massive. Plus unsprung weight would be very high so handling would be crap. Replacing the diff would be better, but you still have the high startup load to consider. I personally like the direct to diff, ie replacing the center gearing/trans with an outrunner.

I have plans to do a dual outrunner direct to diff setup on a 1/5 scale car. I will have to use 2 esc, but I can basically mount the outrunner shaft directly to the pinion gear. So it will open up the center of the chassis to allow all of the componets (batteries, escs, etc) to be mounted right on the center line.