lord2405

iTrader: (2)

Can anyone tell me do i need to go up or down on the spur gear and clutch bell to get more bottom end. i know on a motorcycle i would go up on the smaller gear but not real sure about an rc car.

jammin32j

To get more bottom end go down on the clutch bell.

lord2405

iTrader: (2)

Will 1 tooth make a big difference?

schreff

iTrader: (5)

Rule of thumb...

Increasing spur gear size by 2 teeth is very close to decreasing clutch bell size by 1 tooth.

You'll feel a bigger difference going down 1 tooth on the clutch bell. It will have more bottom end, but will lose straight line speed. I did this for a small indoor track we've been running at and it made a big difference for me. The car tops out perfectly for the straight, but has tons of low end.

ramjesr

Bigger pinion gear= more top speed and less acceleration. Smaller pinion=less top speed and more acceleration..Smaller spur gear= more top speed and less acceleration.Bigger spur gear= less top speed and more acceleration..