Thread: Please help 451 rim ERD
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Old 03-20-14 | 08:04 PM
  #6  
HillRider
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Joined: Aug 2005
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From: Pittsburgh, PA

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

Do the measurements FBinNY suggested at several places around the circumference and average the results. Most rims aren't precisely circular.
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