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Old 12-05-2008, 06:55 PM
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Ghost0 Ghost0 is offline
Motorized Bicycle Elite Member
Join Date: Mar 2008
Location: Bellingham, WA
Posts: 764
Default Re: Need mental and ratio help! Please!

There should be no difference in your ratio calculation do to the different sprocket types. This would only come into effect if you were trying to use a 6t #25 to a 40t #40. Then you have a problem. But a 40t/6t for a #25 chain is 6.6 to 1 and a 40t/6t for a #40 chain is still 6.6 to 1 so don't let the different sprocket/chain types mess with you.
Design is easy, execution the hard part.
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