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skellyo · 04.15.2009, 10:16 AM

What you need to do is take the diff ratio and multiply it by your spur:pinion ratio. Truggies are direct drive, so there is no transmission gear ratio involved.

For instance:

Diff Ratio: 43:13
Spur/Pinion: 62:13

Total gear ratio is = 43/13 * 62/13 = 15.775:1
1 revolution of the tires = 15.775 revolutions of the motor

	(#3)
skellyo RC-Monster Brushless Offline Posts: 2,466 Join Date: Jan 2006 Location: Florida	04.15.2009, 10:16 AM What you need to do is take the diff ratio and multiply it by your spur:pinion ratio. Truggies are direct drive, so there is no transmission gear ratio involved. For instance: Diff Ratio: 43:13 Spur/Pinion: 62:13 Total gear ratio is = 43/13 * 62/13 = 15.775:1 1 revolution of the tires = 15.775 revolutions of the motor