[jhautz]

Its not really the slipperential that lowers the gearing to much, its the combination of the 1/8 diffs and the slipperential that add up to forcing gearing up in the 20T pinion range. The ratio reduction caused by the slipperential by itself or the 1/8 buggy diffs by themselves isnt a big deal, but when you combine these together it really starts to push the pinion size up to the limits of whats available.

I see what you are saying, and I agree, for a 35 mph setup the gearing is no problem really. I tend to use mine for both bashing and track, and I like to gear mine up a bit for bashing. I guess that the slipperential isn't really intended for that anyway. Its is more of a racing setup anyway.

I was just curious what you were running because I was having a hard time figuring out how to gear it for more than 40mph without having to push the motor to higher RPM than I typically like.