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  1. #1
    Home, home again Pharmr's Avatar
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    switching cassettes

    I'm switching cassettes and want to know if I will need to adjust chain length...

    switching from a Ultegra 12-23 to a 105 12-27....other than a possible RD barrel adjustment will my current chain be okay with the switch??

    thanks

  2. #2
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    Impossible to say without looking at it on the bike. In your big ring/big cog now, how much cage movement is left in your RD?

  3. #3
    Packfodding 3 caloso's Avatar
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    Cyclists of the world, unite! You have nothing to lube but your chains!

  4. #4
    messenger
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    always check your chain stretch--- old chain?- new chain? and do you know how to check the proper length on any given chain on any given bike?---- I'm sure that's been discussed on bf---

  5. #5
    Senior Member Bill Kapaun's Avatar
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    Since one is 9 speed and the other is 10 speed....
    EDIT- I jumped too soon again

    IF the chain was properly sized for the 23, you'll need to add a link set. Inner & outer link.
    Going the other way, no problem, although technically, you would remove one link set. I probably wouldn't, just in case I wanted to switch back.
    Last edited by Bill Kapaun; 08-25-08 at 05:53 PM.

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