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BrianG · 12.04.2006, 09:36 PM

It looks like the thing that's killing you is the high total reduction ratio. The HP diffs are 4.3:1. The slipperential is 2.2:1. And the spur/pinion is 2.4:1.

To get that speed, with all the values you listed, you'd have to use a 32T pinion. :eek:

Basically, you need to reduce the total reduction ratio. If you went with a direct center diff drive (removes the slipper though) and went with a typical 46T spur, and went with 5s (will run close to a hot 40k rpm though), you could use a 15T pinion and hit a theoretical 50.1mph (excluding tire ballooning).

	(#4)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	12.04.2006, 09:36 PM It looks like the thing that's killing you is the high total reduction ratio. The HP diffs are 4.3:1. The slipperential is 2.2:1. And the spur/pinion is 2.4:1. To get that speed, with all the values you listed, you'd have to use a 32T pinion. :eek: Basically, you need to reduce the total reduction ratio. If you went with a direct center diff drive (removes the slipper though) and went with a typical 46T spur, and went with 5s (will run close to a hot 40k rpm though), you could use a 15T pinion and hit a theoretical 50.1mph (excluding tire ballooning).