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  1. #1
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    Snapped off Torx rotor bolt head, how do I get it out?

    Stupid mistake, but kinda overtightened my rotor and the head of the Torx snapped right off.

    Any ideas how to get the rest of the bolt out?

    And btw, what size are the threads tapped for the Torx bolts? I'll retap all the threads in the hub to clean them out as well.

  2. #2
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    Get some screw extractor from your local hardware. Check youtube on how to use it if you haven't used one before.

    Also, a pic would be nice to picture things better and might give you better help as well.

  3. #3
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    remove the rotor, see if you can gently grab the remaining stub w a set of pliers/vice grip pliers (free)

    if not, then screw extractor/ez-out (minimal cost)

  4. #4
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    Quote Originally Posted by opiants View Post
    Get some screw extractor from your local hardware. Check youtube on how to use it if you haven't used one before.

    Also, a pic would be nice to picture things better and might give you better help as well.
    Yeah, not the best pic but you can see the damage.


  5. #5
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    Quote Originally Posted by eurospek View Post

    And btw, what size are the threads tapped for the Torx bolts? I'll retap all the threads in the hub to clean them out as well.



    M5 x 10

  6. #6
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    yuuuupp...

    looks like EZ-out is gonna be your solution. They are really easy to use so dont sweat it.

  7. #7
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    Quote Originally Posted by 006_007 View Post
    yuuuupp...

    looks like EZ-out is gonna be your solution. They are really easy to use so dont sweat it.
    Agreed.

  8. #8
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    left hand drill bit?

  9. #9
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    Left handed bit might work, but it's a small bolt. (5mm)
    Since the bolt was torqued enough to break off the cap, and they usually have blue loctite on them, I would have my doubts on if a left handed bit would grab strongly enough.

    The extractor will be the best bet, but to prevent any damage to the hub the proper tools are needed.
    -sharp drill bit ( sharp is very important)
    -extractor
    -drill motor
    -hammer
    -center punch
    -M5 tap for blind holes
    -tap handle
    -lots of patience

    Bits, taps and extractors are also very brittle due to their hardness, so take that into consideration


    If you have any machine shops around that take walk-in jobs, it would take less than 5 minutes for a machinist to remove it for you.

  10. #10
    Biking Like Crazy!
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    Could the OP just use 5 bolts instead of 6?
    I've done this on one of my hubs that had a messed up
    thread and it seamed to work fine. Just make sure
    to loctite the 5 remaining ones.

  11. #11
    Slingin' mud
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    ^^ well that covers everything!

    + rep points for sure!
    Patapsco or bust...............slingin mud or getting broke off!!!!!!

  12. #12
    Texan
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    If you have a large freezer, toss the wheel in for a couple of hours, and try the old center punch trick. Or use heat, I can't remember which one.

  13. #13
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    I'll pick up an extractor set tomorrow and practice on something else before attempting this hub repair. I'll keep you guys posted! Thanks!

  14. #14
    Commit or eat sh!t
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    At worst case you can just use 5 bolts. Sam Hill and some of the other DH pros use only 3!

  15. #15
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    Quote Originally Posted by AZ.MTNS View Post
    M5 x 10
    The thread size is 5 x .8

    Bolt size is M5 (5 x .8) x 10mm (length)
    mtbtires.com
    The trouble with common sense is it is no longer common

  16. #16
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    Quote Originally Posted by shiggy View Post
    The thread size is 5 x .8

    Bolt size is M5 (5 x .8) x 10mm (length)

  17. #17
    ballbuster
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    How thick is that disc mount?

    Can you get to the stud of the bolt form behind? If so, you might be able to grab it from behind with a pair of needle nose vise grips. Just be sure not to grab it too hard and booger up the threads. If you booger them up too much it won't back out of the hub.

    But yeah, as others have said, I wouldn't blow too much time on it. It works just fine with 5.

  18. #18
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    Picked up an extractor bit from Home Depot today, under $3 bucks and went to town.

    First drilled out a pilot hole first then proceeded with their recommended 7/64 drill bit. Punched in the extractor bit and it came out, piece of cake.

  19. #19
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    Quote Originally Posted by eurospek View Post
    Picked up an extractor bit from Home Depot today, under $3 bucks and went to town.

    First drilled out a pilot hole first then proceeded with their recommended 7/64 drill bit. Punched in the extractor bit and it came out, piece of cake.

    Excellent!

  20. #20
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  21. #21
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    Seriously, if your snapping heads off bolts do yourself a favor and take your wheel to a machine shop to fix. Could save you some money and headache in the log run.
    CyclingCentralVa.org

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