gearing ...

[suicideneil]

Without knowing the diff and tranny ratios, I couldnt figure it out using the calcualtor- that said, a change of only 3 teeth on the spur wont make anything more than a tiny difference. What are your esc/batt/motor temps typically?

[VintageMA]

I remember reading an article on gearing somewhere a while back, and although not completely precise it eluded to basically a 4T change in the spur being = to a 1T change in the pinion. It's an approx good rule of thumb.