SPEED Passion 5.5 R Sportsman V3
 

Hi What gearing would best suit this motor , its for a large grass track

thanks

Spencer

Which car?

Its in a cat sx3 :thumbsup:

Thread moved

I used a 21 pinion with stock spur with a 5.5 Orca motor.

Was a bit too much for me, especially on our tight astro track. 6.5 was much better (22 or 23 pinion)