Old 07-14-15, 12:24 PM
  #17  
fietsbob
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406-47 on my bike friday works well .. its rotational mass reduction is significant* Vs 29>26>650b is all bigger, maybe less significant.

* even with marathon plus tires and TR tubes..

Last edited by fietsbob; 07-14-15 at 12:28 PM.
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