1/4 rc car project twin brushless motor

[Overdriven]

Have you considered the Redcat 1/5 scale diffs? I'd have to assume that they would be less expensive than the FG stuff, but still tough as well. I haven't heard of any failures with them either, other than bearings wearing out which can be fixed with better quality bearings. I agree with Brian though. Certain 1/8 scale diffs are tough and can be made to withstand alot of abuse, but not that much abuse and weight.