Thread: My FSIR Spin 3.0
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Old 11-19-18, 08:04 AM
  #57  
L Arnold
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(RE PAGE 2 of this thread)

If the goal is a second ring, and If no space for a 2nd Chainring (really?) then put a Patterson Crank in. That will give you 28-45 or whatever Ring you put in (130bcd) plus a virtual second ring 160% larger.
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