Re: Gearing and Math Question ....

Posted by Thack on November 13, 2005 at 22:39:19 from (4.160.72.201):

In Reply to: Gearing and Math Question .... posted by Gyro Gearloose on November 13, 2005 at 05:20:50:

"would you (or whatever power source you were using) be using or expending the same amount of force or power in both?"

No! The affect comes from the number of teeth in the drive gear and tire rev's per mile for your bicycles.

So if you had 30" tires on both you would need 10 drive/8.05 driven on one and 15 drive/12.08 driven to get the same 672 tire revs per mile.

The gears you choose are good for taking measure, such as a speedometer.

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