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1. drofluf - Member

   Managed to get a bolt stuck in my frame. It's an M8 'grub' screw that tightens the eccentric bottom bracket on my Swift.

   Story so far:

   1. Rounded the Allen head on it.

   2. Soaked it in 3inOne's version of PlusGaz.

   3. Tried a bolt extractor on it but it didn't shift, just enlarged the hole

   4. Started to drill it out but the bit broke

   Now I'm at a loss as to what to do. I'm reluctant to do anything else myself for fear of damaging the frame.

   So who do I go to next? I'm based in SW London so local would be preferable

   Posted 3 months ago #
2. cp - Member

   Can you take a picture of what it looks like now?

   Posted 3 months ago #
3. globalti - Member

   Penetrating oil is a waste of time. You need to shock it to break the bond in the threads; take a punch or something very strong and a big hammer and tap the bolt very sharply on the head, straight downwards. It will move after that.

   Posted 3 months ago #
4. reedspeed - Member

   Hammer a good quality torx spline into it say a 3/8 drive on an extension,then, heat up the outer with a heat gun (thread part) & carefully turn it out! ,youll maybe need help to hold the frame etc, good tip here,dont use monkey metal bolts n cheap tools!

   Posted 3 months ago #
5. Murray - Member

   MIG or TIG weld an alan key in it. The heating will probably free the threads anyway but you'll get a lot of leverage. Again, make sure it's a reasonable quality key not an Ikea special!

   Posted 3 months ago #
6. drofluf - Member

   Here's a picture:

   
   photo.JPG by paulfulford, on Flickr

   It's the top one. Nothing to grab with molegrips

   Posted 3 months ago #
7. stoney - Member

   That`ll drill and then use a splined remover easy enough.

   Posted 3 months ago #
8. reedspeed - Member

   Cobalt drill & a Snapon easy out then clean it out with a tap job done,!

   Posted 3 months ago #
9. Marko - Member

   A decent drill bit will work - start small and work your way up until you can get an extractor in, or until you can pull the threads out like a pigs tail.
   Hth
   Marko

   Posted 3 months ago #
10. drofluf - Member

    Well a happy ending! And a cautionary tale.

    Took it round to a friend's who put his bolt extractor (Easy Out) on it. Just as we were about to give up it shifted!

    Then he asked how the EBB worked. Simple I said just put an Allen key in and twist. Nada, nothing, that was seized as well :(. Fortunately a little persuasion and it shifted. We pushed it out and all the grease had dried out. Think I need to add regular EBB removal to my maintenance list. Bike was new about 15 months ago and I spent 6 months of last year abroad so it only saw light use.

    Posted 3 months ago #
11. JoeG - Member

    You might want to consider using anti-sieze compound instead of grease on the set screws and EBB hex bolts.

    Posted 3 months ago #

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