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nerdy question

CraigHCraigH Posts: 321
edited October 2008 in Workshop
Re Shimano road gears.
How how much cable pul (mm) is needed to shift one 9 speed Sprocket?


  • Big Red SBig Red S Posts: 26,890
    I think it varies along the sprocket.
  • Monty DogMonty Dog Posts: 20,614
    No, cable pull is constant for each click of the shifter which moves the rear mech a set distance. Unfortunately even the great Sheldon Brown doesn't even have the info - but as far as I can determine indexing spacing is 4.35mm, pull ratio is 2.61 for Shimano 9 speed so cable pull is 1.66mm
    Make mine an Italian, with Campagnolo on the side..
  • CraigHCraigH Posts: 321

    I have a plan to machine up a pair of 'cool' shifters...

    its all about arcs, etc tto draw it up

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