Discussion in 'RC Onroad Forum' started by ty007cars, Mar 16, 2004.
what size pinion and spur gear do i need for my tc3 with a d4 9x3 motor? thanks ty
anyone?? please help!!!!
What motor did you have in there before?
Are you racing, what size track?
What spur and pinion do you have now?
i had the same kind but an 11x2 it has a 28 pinion and a 72 spur,its not for racing
Rubber or foam tires? Indoor on carpet or outdoors on asphalt? Big track or small track?
Go with what other racers in your area use as a base and adjust from there. I ran a 72/31 gearing outdoors on a very large asphalt track with a Roar stock motor.
rubber tires on asphalt
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