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  1. #1
    samoots
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    cassette installation question...

    i'm going to bring my rear wheel in to a bike shop to have them swap cassette's for me. does the rear or front derailler need to be adjusted, or does it not matter?

    thanks.

  2. #2
    Senior Member (Retired) gmason's Avatar
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    It shouldn't matter. But in practice I have had to make minor adjustments in the rear on occasion when swapping.

  3. #3
    samoots
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    Quote Originally Posted by gmason View Post
    It shouldn't matter. But in practice I have had to make minor adjustments in the rear on occasion when swapping.
    thanks. i'm swapping a 12/27 to a 12/23 on a shimano ultegra setup

  4. #4
    Senior Member (Retired) gmason's Avatar
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    I am Campa only, but the principles are the same.

  5. #5
    Senior Member barba's Avatar
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    If your chain is at all old, I would consider getting a new one installed as well.

  6. #6
    samoots
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    Quote Originally Posted by barba View Post
    If your chain is at all old, I would consider getting a new one installed as well.
    thanks for the advice. it's relatively new. i had had the 12/23 on for all of this year until about two weeks ago to prepare for a real hilly ride. i brought the entire bike into the shop and wasn't sure if they had adjusted the derailler. today i need to have the 12/23 put back on but only want to bring in the rear wheel.

  7. #7
    James
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    Worst case scenario is that you need tiny cable tension or set-screw adjustments to get it smooth, although I wouldn't fear any issues to begin with. Chain length and tension shouldn't be an issue as you have run this set-up before if I read you correctly.

    Good luck.

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