[frizzen]

I wouldn't really say I swapped the pinion, that would imply having left the stock powerplant. This is a modified servo with a pinion on the output shaft. Anyway, my new crawler box is much slower than stock, but it's not painfully slow. Torque is great though. It should be able to ramp on anything it can get a wheel onto. Building the motor mount is proving a challenge though because the torque keeps pulling it out of mesh.

The Evo diffs are a cylinder held together with a long pin, something similar should be able to work though. I dunno, I've still got a long way to go before I'm really 'finished' with it.