rcarmchl

iTrader: (15)

I am building up my first car and have a stock motor to put on it but it didn't come with a piono or what I might call a drive gear. Is there a certain one that I should use? what do I use to determine this??

RMF-888

iTrader: (5)

what is ur kit?try to look at your manual there you can see the right gear ratio in your stock motor

ProudSavageOwnr

i would start off with roughly a 16-20 tooth pinion......the pinion is the little gear that goes on the motor and the spur gear or main drive gear is the 1 that the pinion turns

gatermaxx

iTrader: (6)

It should say in your directions as noted above, However all of the electrics that I have run a 21 stock except the xxx4 which likes a 24.
HTH
Rod

EngTat

iTrader: (17)

what car are you using? also the kit spur is 64 or 48 pitch, the pinion u going to buy has to be the same pitch

EngTat