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  1. #1
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    2010 sram rear derailleur prob.

    Let me say that I have been a loyal sram x9 user for years now, but now I'm not sure.

    Here's the short version of my problem.

    I crush my X9 pre2010 rear derailer.
    I order new post 2010 X9 rear derailer.
    Install but have indexing problem, if I align chain w/ 5 outboard cogs my chain is too far inboard on 4 inboard cogs. (It is rideable, just not good quality and you can visually see the problem.)

    Here is what I have tried:
    3 new shift cables,
    3 used cassettes and 1 new cassette,
    3 used shifters,
    1 used chain and 1new chain,
    I even bought another brand new 2010 X9 rear derailer.
    None of this changed my indexing problem, until I took 3 wrecked pre2010 X9 rear derailers and managed to build one decent one. When I put this on my bike I had it tuned in seconds and indexing like a dream.

    So my question is why?
    Am I the only one experiencing this problem?
    Is this a design flaw?

    Getting ready to order XT derailer and shifters.

  2. #2
    Former Bike Wrench
    Reputation: mtnbiker72's Avatar
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    Quote Originally Posted by skyboss
    I order new post 2010 X9 rear derailer.
    "Post" 2010...as in 2011 would be a 10 speed X9 and it is not compatible with the 9 speed shifters.

  3. #3
    i also unicycle
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    best guess is 9 vs 10 speed problems.
    mtbr says you should know: i work in a bike shop.
    bikes & beers (on my blog) http://idontrideenough.blogspot.com/

  4. #4
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    You made me think for a second but I don't think that's the problem.

    Here's the X9 that I rebuilt.
    http://www.universalcycles.com/shopp...59&category=71

    Here's the X9 that I'm having problems with.
    http://www.universalcycles.com/shopp...61&category=71

    And here's the X9 for 10 speed gearing.
    http://www.universalcycles.com/shopp...42&category=71

  5. #5
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    you didn't mention checking your mounting tab aliegnment after "crushing" your old deraileur.

  6. #6
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    Quote Originally Posted by herbn
    you didn't mention checking your mounting tab aliegnment after "crushing" your old deraileur.

    Good call but I just left that out. I did indeed carry it to my lbc and have them put a drop out gauge on it. All was good. I also had to put a new drop out on after said crushing.

  7. #7
    Former Bike Wrench
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    Is the cable clamped properly on the 2010...it is different routing than the 2009?

  8. #8
    Never trust a fart
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    Quote Originally Posted by mtnbiker72
    Is the cable clamped properly on the 2010...it is different routing than the 2009?


    This could be the issue. The 09 model has the pinch bolt on the bottom of the body, where the 2010 model has it behind the body.

  9. #9
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    Quote Originally Posted by frdfandc
    This could be the issue. The 09 model has the pinch bolt on the bottom of the body, where the 2010 model has it behind the body.
    Check that.

    If you can't get it worked out have your LBS call Sram. They are replacing the 2010 X9s with X0s because that are know to have some quality issues.

  10. #10
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    Another good thought but I did have them routed correctly.

    I bought them online so I can't take them back to my LBS.

    big_papa_nuts, this is the first I have heard of someone else have a problem with the X9. Do you know of any online info you could link me to.

    Thanks in advance for any more info on this.

  11. #11
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    Quote Originally Posted by skyboss
    Another good thought but I did have them routed correctly.

    I bought them online so I can't take them back to my LBS.

    big_papa_nuts, this is the first I have heard of someone else have a problem with the X9. Do you know of any online info you could link me to.

    Thanks in advance for any more info on this.
    Sticky piviots have been the biggest problem. I have fallen victim twice. Just search around on here and you will find other accounts. I'm trying my best to get the word out because Sram has thought it best to keep it on the down low to save them replacing all effected product.

    And you don't have to have bought it at a shop for them to warranty it, you just have to have a shop with good customer service.

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