Originally Posted by
weyant
I got my boy a Viper10.5 sensord for his sc10 this year he ran a Element 3900kv sensorless all last year and the gearing was 84 23 and it was perfect. My question is will this be a good starting point with the new motor and esc
Should be fine to start there and see. Might have to drop to a 22 pinion depending on how aggressive you get with the timing.