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  1. #1
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    Rear derailleur exploded

    Hanger is messed up and jockey wheels are compromised, was going to order some new ones. Anyone done this before? If I can do this instead of buying a whole new derailleur?

  2. #2
    turtles make me hot
    Reputation: NYrr496's Avatar
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    You can buy just pulleys. It's been a while since I replaced the jockey wheels in any derailleurs. You can usually get new complete derailleurs cheap enough on Ebay.
    I like turtles

  3. #3
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    What do you mean by your rear derail exploded? Exactly what happened? Lemme guess, you were just riding along and ...........

  4. #4
    Magically Delicious
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    A picture's worth a thousand words.

  5. #5
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    Replacing jockey wheels is normal maintenance on MTBs. Jockey wheels can be cheap, under $10. Or expensive - SRAM X7-X9 are around $30. At that price it might be a good idea to replace a X7 derailleur rather than just the jockey wheels.
    If you have taken a hit that damaged all that, you might want to look at just replacing the derailleur.

  6. #6
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    Yea I'm deciding to just replace the whole thing. After the price of jockey wheels, and a new hanger if the derailleur is still broken I would have been better off just buying a new one. My next question is I have a Marin Palisades 29er 2012. When getting a new derailleur should it be a long cage or short cage? It's a 10 speed. Also can I go wrong when choosing a hanger or will anyone pretty much do? Any recommendations?

    EDIT: I'm assuming I already had a long cage because I run a 3x10?

  7. #7
    turtles make me hot
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    3X10 needs a long cage.
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  8. #8
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    Quote Originally Posted by Awshucks View Post
    Also can I go wrong when choosing a hanger or will anyone pretty much do? Any recommendations?
    Any hanger that will fit your frame will do fine, a lot of them won't. You will need a long cage RD for your 3x10 drivetrain.

  9. #9
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    What do you guys do when choosing a hanger? Any luck buying them online? I went to derailleurhanger.com and put in my frame type and chose 2 hole hanger and more than 100 choices popped up. Is it necessary to load up the whole bike to try on hangers at your LBS? I would do this right away except the LBS isn't so local.

    EDIT: NVM I found the right one disregard this post. Thanks for the responses guys. I love you.

  10. #10
    turtles make me hot
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    We love you too, man.
    I like turtles

  11. #11
    Fat-tired Roadie
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    On most modern bikes, the derailleur hanger is part of the frame, not part of the derailleur. Searching your specific frame or just going to your dealer should get you a quick, specific result.

    Can you post some pics? Show us your rear driveside dropout and your derailleur.
    "Don't buy upgrades; ride up grades." -Eddy Merckx

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