Old 10-22-13, 04:12 PM
  #9  
Bill Kapaun
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Location: Mid Willamette Valley, Orygun
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Bikes: 86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.

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Originally Posted by njkayaker View Post
Where did you get this number from?

That number gives R = 345.84 mm.
C = 2132 mm gives R = 339.32 mm

A difference of 6.52 mm.

The google path is going to be smoother. That is, your measured path is almost always going to be larger.
So, which bike computers use tire radius?
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