Thread: At the co-op
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Old 09-17-17 | 06:01 PM
  #61  
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fleslider
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From: Fort Collins, CO

Bikes: 1974 Paramount ~ 1974 Raleigh Pro ~ 1977 Pro-Tour ~ 1978 TX900 ~ IronMan 85,87:E/M,88:M/Pro,89:E ~ 98 Peugeot Festina Replica

Originally Posted by IVARR
frame couplers ???
yup for folding the frame in half for transporting. also called BTC or Bicycle Torque Coupling™

I believe these are the ones on the Columbine:
Folding Travel Bikes using S and S Machine Bicycle Torque Couplings™
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