Thread: Brompton 3 to 6 Speed Conversion
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Old 05-09-14 | 07:54 AM
  #10  
fietsbob
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Joined: Jun 2010
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From: NW,Oregon Coast

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if you can spin out a 54:13 in high, you should be moving at a sufficient rate of speed ..

Ok the BWR will take a 12.. so will the S-A S-RF5(N). which is also using a Narrow, axle, and 28 spoke.

which has a taller internal 5th gear..
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