Thread: Brompton Rims?
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Old 03-10-19 | 11:33 AM
  #31  
fietsbob
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From: NW,Oregon Coast

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Q: which cranks you use?
A: Schlumpf Swiss Mountain Drive 2 speed, [2.5 : 1 reduction] internal geared 54t & "21.6t"....

were it a 50t , the low range is effectively , an even 20t...







....
Last edited by fietsbob; 03-10-19 at 11:38 AM.
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