Thread: Introduction of 126 spacing and 7 speed
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Old 03-22-18 | 06:58 PM
  #33  
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Originally Posted by Kontact
126 and 130 hubs have the same bracing angles and flange locations. That was the point of 130 - to add 2mm on the outside while the cassette allowed the low sprocket to be 2mm closer to the flange than a freewheel could get.

How does a cassette allow the low sprocket to be 2mm closer to the flange?
And 2mm closer than what?
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