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Reply to "Transmission gear ratio and engine / wheel size."

Stan, you nailed it. That is exactly what I come up with for a 3.44 final drive canyon carver. You can get almost the exact same ratios with a 3.88 final(more in a minute) but it's more expensive($$$$ 1-2 custom mainshaft).

I'd really like to use a Quaife Torsen-style differential in my Spyder. Conventional wisdom says tallest final drive with a Quaife is 3.88. There is a guy I know who says a 3.44 will fit IF you machine a little off the face of the pinion. We'll see, but I really don't want to ruin a R & P to find out.

The 3.88 version uses a 1.30 third and a .93 fourth, both stock ratios(less $$$) but has to use that custom(more $$$) 1-2 mainshaft to get there.

Last edited by DannyP
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