Originally Posted by
bjspinner
Um mine weighed 55 grams ( moddified Durango gear diff ) at the masters Calvin, and the car was slow
.
More weight in the diff makes it spool up slower (less wheel spin) and carry more momentum through the corners.
Ok but with that theory you should use a steel pinion/outdrives/driveshafts/ect,alu wheels and so on. Look at real race cars. The ONLY time they consider using a havier part would be a flywheel on a combustion engine. Lighter is ALWAYS better. When a heavy car works better then a light car then it's the lighter one that isn't set up right.