Front dérailleur help

cesco
cesco Posts: 252
edited August 2013 in Workshop
So I was doing some basic front mech (Shimano Sora for triple ring) adjustments, and I wanted it to be mounted a little (like 0.5mm lower). All went well, until I tightened the bolt, applied to much torque apparently, and; well you know...

So I can't tighten it anymore. The thread on the bolt seems fine really, so I'm afraid I busted it internally. In fact, there appears to be a piece of spring sticking out (see photos).

Yes, I WILL take it to my LBS. Already made the phone call. He's available to have a look two weeks from today. Two. Weeks. 2.

Basically I was wondering if anyone could advise me a quick and dirty fixing method without destroying the thing even more, so I can still go on rides before I bring it in. Thanks a lot in advance.

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Comments

  • doug5_10
    doug5_10 Posts: 465
    With stripped threads I doubt it'll be salvageable. Lower spec front mechs are pretty dirt cheap, just get a new one.
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  • drlodge
    drlodge Posts: 4,826
    As above - a new one is cheap enough. If you have the equipment, some JB weld and retapping of the threads might work but doubt you have that in your workshop...alternatively you could try some epoxy, wait till its almost gone hard and gently screw the bolt it - in might hold. You want the epoxy to have gone almost totally off except there is just enough give so the bolt can re-tap the threads.
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  • vorsprung
    vorsprung Posts: 1,953
    Find another LBS

    Or buy a cheap toolkit http://www.inmotionproducts.com/Bike%2D ... it-252.htm

    And a new cable and front derailler

    And read the http://www.parktool.com website on how to replace a cable and front derrailler

    On the mean time there's always Araldite
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  • keef66
    keef66 Posts: 13,123
    +3 - You've buggered it. Trying to bodge it back on will take more time and possibly cost more than simply buying a new one online and fitting it yourself.
  • cesco
    cesco Posts: 252
    Thanks guys, that's what I thought. None of two LBS' had these in stock, so I'm ordering online. Quick n00b question though: The part number is FD-3403 (braze on triple version). Online I found FD-3503, that's interchangeable right? Shimano's techdocs doesn't seem to offer much more insight.
  • owenlars
    owenlars Posts: 719
    New Sora front mech is 15 quid. Go for it. The 3503 will work fine.

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