Originally Posted by impson
I believe he is looking for things such as
What ampdraw should the motor be tuned to at what voltage?
Whats the best brush?
CO27 vs. Monster?Any cuts (hole, slots, filed edges)
It's been a LONG time since I did 12th stock but heres what I remember doing: New monster; polish bushings, align hoods, diamond true the comm, shimm armature, install new brushes (I like 767's, with either a single slotted or small hole in center for 12th scale), red and green springs +/-. Oil bushing, run in for 2 mins on 3 volts with fan blade, true comm again(optional, and I do it sometimes), should pull around 10amps at 3 volts no-load on a Turbo35 charger.
Gearing? Varies on battery performance and track layout. Something like 46-50mmpr rollout on tight track start low and go up is good idea. It's hard to say for stock sometimes; some folks like to gear to the moon and beat the crap out of their motors to go fast just cause new batt's got the muscle to do it!