pinion gear help !

[bod405]

hi there im after some advice (again)....ive got my dbo1 and ive got a new motor for it, its a modified 12x2 reedy any ideas what size pinion i should be using to be honest any advice on fitting this motor would be much appreciated

[A.J. Gee]

The supplied 17T pinion would be your best bet. The 23T pinion would be geared too high in my opinion. I would say anywhere between 17 and 20 would be good.

[rcluke]

getting the pinion size right is critical, too big and you will kill the motor, too small and you will kill the motor.

if i was you, buy a large selection of pinions and do a few minutes driving using each and check the temperature.