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Thread: How do I stop the sprocket bolt coming loose?

  1. #1
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    How do I stop the sprocket bolt coming loose?

    I was wondering what the noise was when the bike is on the paddock stand and I move the back wheel, so I took the fairing and sprocket cover off only to find that the front sprocket bolt was loose! What do I do to prevent it from happening again?

  2. #2
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    Normally they have a washer that you bend a side up to lock the nut.
    I have evolved as a KB member.Now nothing I say should be taken seriously.

  3. #3
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    Failing a locking tab, the strongest thread lock you can buy would probably work.

  4. #4
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    It needs a lock washer!
    Quote Originally Posted by Gubb View Post
    Nonono,

    He rides the Leprachhaun at the end of the Rainbow. Usually goes by the name Anne McMommus

  5. #5
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    It has an allen key bolt with a washer type thing in it that I have to remove before I can access the sprocket bolt.

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    Quote Originally Posted by SMOKEU View Post
    It has an allen key bolt with a washer type thing in it that I have to remove before I can access the sprocket bolt.
    It will not stay tight, no matter what you do. Hense the allen bolt washer thingy which stops it being able to come off.

  7. #7
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    No room for a lock washer?

    In for a different approach?
    Drill a 1/8th hole across two faces of the nut.
    Thread a short length of nylon fishing gut through the holes,
    Thread the nut onto the shaft.
    When the gut comes in contact with the thread of the bolt it will crush abd cut.
    effectively becoming a nyloc nut.
    But the most effective way is the lock tab washer.

    If that does not work, look at drilling the shaft as well, and drilling all faces of the nut , then using a locking wire...........failsafe
    To be old and wise, first you must be young and stupid.

  8. #8
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    Lets start at the beginning. What sort of bike is it?

    Most of the time, the nut is not meant to tighten on the sprocket, because it cannot stay done up. But if you tell us what to google search, I'll make sure i'm not giving totally shit advice.

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    Quote Originally Posted by Drew View Post
    Lets start at the beginning. What sort of bike is it?

    Most of the time, the nut is not meant to tighten on the sprocket, because it cannot stay done up. But if you tell us what to google search, I'll make sure i'm not giving totally shit advice.
    Hear what you are saying drew, and dwelling on it, I think you are right. the nut is there just to stop it coming off, not to hold it tight.
    Must be too many years riding a shafting and not worrying about sprockets
    To be old and wise, first you must be young and stupid.

  10. #10
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    Quote Originally Posted by drew View Post
    lets start at the beginning. What sort of bike is it?

    Most of the time, the nut is not meant to tighten on the sprocket, because it cannot stay done up. But if you tell us what to google search, i'll make sure i'm not giving totally shit advice.
    1998 GSXR600. I'll post pics of the front sprocket assembly tomorrow when the light is better.

  11. #11
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    Quote Originally Posted by SMOKEU View Post
    1998 GSXR600. I'll post pics of the front sprocket assembly tomorrow when the light is better.
    Googled it, don't worry about the pictures.

    The nut goes on as far as it can, then the funky looking washer thing which I'll bet sits over the spline teeth too, and the cap screw holding that in. If assembled correctly it is impossible for the big nut to come undone.

    The noise you heard is the play between the sprocket and shaft, it needs to be there or shit would snap instead of giving a little.

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    Quote Originally Posted by SMOKEU View Post
    1998 GSXR600. I'll post pics of the front sprocket assembly tomorrow when the light is better.
    Either the flat washer with the locking tab, or the castellated nut with a hole through the shaft and split pin to lock it.
    When life throws you a curve ... Lean into it ...

  13. #13
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    Quote Originally Posted by mossy1200 View Post
    Normally they have a washer that you bend a side up to lock the nut.
    Fail

    Quote Originally Posted by Spuds1234 View Post
    Failing a locking tab, the strongest thread lock you can buy would probably work.
    Fail

    Quote Originally Posted by Mom View Post
    It needs a lock washer!
    Fail

    Quote Originally Posted by Subike View Post
    No room for a lock washer?

    In for a different approach?
    Drill a 1/8th hole across two faces of the nut.
    Thread a short length of nylon fishing gut through the holes,
    Thread the nut onto the shaft.
    When the gut comes in contact with the thread of the bolt it will crush abd cut.
    effectively becoming a nyloc nut.
    But the most effective way is the lock tab washer.

    If that does not work, look at drilling the shaft as well, and drilling all faces of the nut , then using a locking wire...........failsafe
    Fail

    Quote Originally Posted by Subike View Post
    Hear what you are saying drew, and dwelling on it, I think you are right. the nut is there just to stop it coming off, not to hold it tight.
    Must be too many years riding a shafting and not worrying about sprockets
    Unfailed.

    Quote Originally Posted by FJRider View Post
    Either the flat washer with the locking tab, or the castellated nut with a hole through the shaft and split pin to lock it.
    Fail


    I never win at these things!

    I'd like to thank God, and my family for their support.

  14. #14
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    Quote Originally Posted by Drew View Post
    Fail

    Fail

    Fail

    Fail

    Unfailed.

    Fail


    I never win at these things!

    I'd like to thank God, and my family for their support.
    Still not smoking then?

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    Quote Originally Posted by Drew View Post
    Googled it, don't worry about the pictures.

    The nut goes on as far as it can, then the funky looking washer thing which I'll bet sits over the spline teeth too, and the cap screw holding that in. If assembled correctly it is impossible for the big nut to come undone.

    The noise you heard is the play between the sprocket and shaft, it needs to be there or shit would snap instead of giving a little.
    Farkin hell,cant believe it took so long.
    Be the person your dog thinks you are...

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