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Seized bolt HELP

Lungs94Lungs94 Posts: 160
edited May 2015 in MTB workshop & tech
I just bought a Giant STP for spares & repairs for £15, it has Reba SL on it! however I cant take off the stem as the bolts are rounded off & seized what can I do to get it off?
Bikes:
2013 Mondraker Dune XR - XX1 XO1 Hope, Easton Carbon, Fox
Voodoo Bizango XT - Hope, Pikes, Mavic

Posts

  • Chunkers1980Chunkers1980 Posts: 8,035
    Drill it out
  • bob6397bob6397 Posts: 218
    Drill it out

    +1. Carefully... Use a drill bit the same size as the thread of the bolt, not the size of the head of the bolt - unless you have no further use for the stem.. :)
    Boardman HT Team - Hardtail
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  • Lungs94Lungs94 Posts: 160
    Thanks, I ended up having to use a saw to cut the bolt in half took 2 hours
    Bikes:
    2013 Mondraker Dune XR - XX1 XO1 Hope, Easton Carbon, Fox
    Voodoo Bizango XT - Hope, Pikes, Mavic
  • In the future, use a drill just marginally bigger than the thread.

    As soon as you drill through the head, whats left of the head will spin and come off, removing all the tension, and leaving just the threaded shank left in the body.

    they should just unwind then.

    Get it in work when undoing flanges of numerous bolts. people take out 55, and the 56th has all the tension on it and people then round the heads (like idiots). pop the head and bobs your uncle.
  • FishFishFishFish Posts: 2,238
    What? So what you are saying is that the head stores tension? Different insight from mine.
    ...take your pickelf on your holibobs.... :D

    jeez :roll:
  • JackPozziJackPozzi Posts: 1,191
    Also for future reference, sometimes with a rounded allen bolt it's possible to hammer a torx bit which will grip enough to undo the bolt.
  • Lungs94Lungs94 Posts: 160
    Thanks for suggestion peeps, but I already tried; drilling, heating & wedging a bigger allen key but it was rounded to literally a circle & looked like it was super super glued & welded in there lol, I had no choice but to cut it
    Bikes:
    2013 Mondraker Dune XR - XX1 XO1 Hope, Easton Carbon, Fox
    Voodoo Bizango XT - Hope, Pikes, Mavic
  • cooldadcooldad Posts: 32,904
    If the bolt was that bad, hopefully the forks were looked after better.
    I don't do smileys.

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  • JodyPJodyP Posts: 193
    FishFish wrote:
    What? So what you are saying is that the head stores tension? Different insight from mine.

    I'm intrigued as to what your insight is. How else can a bolt work?
  • JodyP wrote:
    FishFish wrote:
    What? So what you are saying is that the head stores tension? Different insight from mine.

    I'm intrigued as to what your insight is. How else can a bolt work?

    it must be magic!
  • RockmonkeySCRockmonkeySC Posts: 15,247
    JodyP wrote:
    FishFish wrote:
    What? So what you are saying is that the head stores tension? Different insight from mine.

    I'm intrigued as to what your insight is. How else can a bolt work?

    Wizardry obviously.
    My years of engineering training were wasted, should have gone to hogwarts (could have beat up that ginger kid and the speccy one)
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