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Thread: Rear thru axle

  1. #1
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    Rear thru axle

    I have somehow sheared the thread on the rear thru axle of my Specialized camber evo, 2015 model. I am now having a nightmare in finding the right sized new model to get. i bought one that looks exactly the same (Specialized 12X142mm Axle My14-16 Bolt On Thru Rear Axle For 142 Hub) but the thread was slightly wider so wouldnt nip up.
    my original one has the code 14L4 on it... not sure what that means?
    if anyone can shed any light of has had the same issue please shine some light!
    Rear thru axle-axle.jpgRear thru axle-axle-close-up.jpg

  2. #2
    Combat Wombat
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    Contact these guys. Don't know for sure if they have what you need, but definitely worth a shot. Good stuff, running their axles front and back on my Kona Unit.

    https://robertaxleproject.com/

  3. #3
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    Hello Rich,

    We do have a replacement axle for your Camber.

    https://robertaxleproject.com/shop/l...-x-1-0-thread/

    We have not seen this happen with Specialized bikes previously. So this issue is somewhat unique. I can tell you that every single Specialized with a thru axle uses the same M12x1.0 thread pitch. So perhaps something was not right with manufacturing of either the original axle or the replacement axle threads. I can tell you making a 1.0 thread pitch is finicky as there is no room for error.

    I would strongly suggest that you clean out the threads in your frame with a M12x1.0 tap, which will remove the buggered aluminum left behind by the axle threads and it will cut fresh threads on the insert in the frame.

  4. #4
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    I might be wrong, but from the pictures it looks like you crossed your threads on the axle, and if the new axle did not fit, then maybe the frame.

  5. #5
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    Quote Originally Posted by marcw View Post
    I might be wrong, but from the pictures it looks like you crossed your threads on the axle, and if the new axle did not fit, then maybe the frame.
    x2. I can see three or four good threads left on the original axle. Inspect the frame to see if the threads on the bolt are damaged. If they aren't looking mint I'd carefully run the correct size tap through the frame nut to clean it out and blow it clean with compressed air.

  6. #6
    Turns right, slides left
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    Quote Originally Posted by RobertAxle142 View Post
    Hello Rich,

    We do have a replacement axle for your Camber.

    https://robertaxleproject.com/shop/l...-x-1-0-thread/

    We have not seen this happen with Specialized bikes previously. So this issue is somewhat unique. I can tell you that every single Specialized with a thru axle uses the same M12x1.0 thread pitch. So perhaps something was not right with manufacturing of either the original axle or the replacement axle threads. I can tell you making a 1.0 thread pitch is finicky as there is no room for error.

    I would strongly suggest that you clean out the threads in your frame with a M12x1.0 tap, which will remove the buggered aluminum left behind by the axle threads and it will cut fresh threads on the insert in the frame.
    Disclaimer: I'm not a paid spokesperson...

    Just a plug for the team at The Robert Axle Project- Great folks and products!

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