Thread: Brompton 3 to 6 Speed Conversion
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Old 05-08-14 | 09:07 AM
  #7  
fietsbob
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Joined: Jun 2010
Posts: 43,586
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From: NW,Oregon Coast

Bikes: 8

3 speed , plus, Schlumpf MD crank makes it into a wide spread 6 speed .. it will Climb mountains as if a 50,20t double

the BWR with 13 & 16t cogs halfsteps the hub 3 ..
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