Thread: Gearing chart?
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Old 06-01-09 | 09:29 AM
  #4  
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AEO
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From: A Coffin Called Earth. or Toronto, ON

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50x25 is the same as 42x21.

http://www.panix.com/~jbarrm/cycal/cycal.30f.html
http://sheldonbrown.com/gears/
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