Jerry, that's a great idea, I'm sure there are sailing winch type of servos that would serve perfectly if the voltage isn't an issue. I guess you could skip the esc board and just go direct from Rx too.

I have the geared motors on the way, I'll see what they look like. They're 1.45" long (the 38(t) is around 3" inside at the final drive) and 5/8 " wide. The kit has three panels making up the front glacis plate, so there's just enough room to squeeze the motor and stay on axis if the two inner plates are cut.

At least that's my plan.

Now I just need to drill out another 30 sprues wrth of links. The first two took me about 20 minutes each, so I guess it's going to be a long haul. Since it's mindless and repetitive, I'll most likely do it while crapped out watching TV, hopefully three or so in one sitting.