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  1. #1
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    tool for derailleur hanger nuts?

    My derailleur is hanging a little loose...the nut holding it to the hanger is like those on the backside of a chainring...So I need a really wide skinny screwdriver--which I don't have.

    What might I have lying around that will do the trick? I'd rather not buy a special tool for this limited purpose.

    TIA

  2. #2
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    A sacrificial butter knife? Better yet would be a spackle/joint compound knife. It's thicker so it won't leave a burr.

  3. #3
    Bill
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    epoxy
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  4. #4
    Great State of Varmint Panthers007's Avatar
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    A penny and a pair of pliers.
    How do you keep an idiot in suspense?

  5. #5
    Senior Member Torchy McFlux's Avatar
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    I'd just stake it with a centerpunch.

  6. #6
    Senior Member DannoXYZ's Avatar
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    Quote Originally Posted by Big R View Post
    My derailleur is hanging a little loose...the nut holding it to the hanger is like those on the backside of a chainring...So I need a really wide skinny screwdriver--which I don't have.

    What might I have lying around that will do the trick? I'd rather not buy a special tool for this limited purpose.
    There should be a bolt that goes into that nut. It typically doubles as the main pivot for the RD. Most likely it's a 5mm allen-key that tightens the bolt.

  7. #7
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    Quote Originally Posted by DannoXYZ View Post
    There should be a bolt that goes into that nut. It typically doubles as the main pivot for the RD. Most likely it's a 5mm allen-key that tightens the bolt.
    Bolt side is fine...and, yes, it's a 5mm allen

    It's the nut side that I'm having an issue with as hanger is not threaded...nut is similar to nuts on chainring.

  8. #8
    cab horn
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    CNW-2
    Mes compaingnons cui j'amoie et cui j'aim,... Me di, chanson.

  9. #9
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    Quote Originally Posted by Big R View Post
    Bolt side is fine...and, yes, it's a 5mm allen

    It's the nut side that I'm having an issue with as hanger is not threaded...nut is similar to nuts on chainring.
    It sounds like the hanger was repaired in the past by drilling out the original threads and adding a threaded insert.

    As recommended, a putty knife or other wide piece of metal can be used as a holder to keep the insert from turning. Another possibility is to remove the derailleur, remove the insert and degrease the back of the hanger and shoulder of the insert. Then it may stay in place as you tighten the derailleur's attachment bolt.

  10. #10
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    All set!

    The penny/pliers worked like a charm...

    HillRider...no previous repair. This is an aluminum frame w/a replaceable hanger...working as designed.

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