ih ring and pinion ? April 05, 2009 12:31PM
I know this has been on here before but cant find it can anyone tell me is a 13-49 faster than a 12-49 and a 13-51 and how do you figure out your speed thanks for any help
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Re: ih ring and pinion ? April 05, 2009 12:34PM
Divide the driven by the driver. Numerically higher the number = lower the gear.
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Re: ih ring and pinion ? April 05, 2009 02:08PM
ring gear divided by pinion = ratio, 49/12=4.08, 51/13=3.92, 49/13=3.76, the lower the number, numerically, the faster the ratio, at direct drive, the ring and pinion ratio x the bull gear ratio, around 5:1 in a 706, would be 4.08 x 5=20.4 , a 1566 ring and pinion is like a 3.08 x 5(in a 706 or non 1566 rear)=15.4, a pretty steep gearset. Check the teeth counts in a parts book for the exact ratio inside of the bull gear reduction, might be a 12/66, which would be a 5.5, rather than 5.
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