XXXS Speed car
I figured out my problem. The aluminum pinion had a small burr on it. Replaced the pinion with a new 45tooth and 86 spur. It ran great with no problem. Got 96mph out of it on 3s w/ a Castle 7700. Didnt want to push it to the limit.
I came across a huge lot of parts, graphite chassis roller and plastic car roller. Right now I have 2 speed cars, a 68 VTA Camaro, a drift car and a regular on road race car. I'm in the process of building a 65 Shelby GT350. Might hang on to the regular chasiss for parts and get rid of most of the graphite chassis. Thanks for your help.