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Thread: Lock Ring???

  1. #1
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    Lock Ring???

    Hi all - I am working on my first single speed MTB.

    In doing so, I recently picked up a wheelset that includes a Rockwerks Single Speed Disk Hub and I am struggling on what type of lock ring is required to install the cog? Does not appear to be a shimano type design...

    Here is an example of the hub I am talking about...

    http://www.bikepartsmart.com/hub-rea...-hu406bko.html

    Any ideas? I am sure that it is something simple, but I am having trouble searching for answers on the net.

    Thanks
    Brian

  2. #2
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    I just ordered one of these for my XXIX. It (my XXIX) appears to have the same hub as yours. You will note that it is designed for lock rings with an OD of 41-42 mm or 43-44 mm. My lock ring has a OD of 42mm. The other wrenches I have seen suggested are converted bottom bracket wrenches that are too large a diameter. I'm sure that you can purchase it online, but I just had my LBS order it for me.
    Last edited by arphaxhad; 05-14-2010 at 10:46 AM.

  3. #3
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    Thanks for the reply.. quick question..

    What type of lock ring is this? is it a generic one with threads that locks down across the splines?

    Brian

  4. #4
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    Quote Originally Posted by bljacobs
    Thanks for the reply.. quick question..

    What type of lock ring is this? is it a generic one with threads that locks down across the splines?

    Brian
    If you are referring to the serrated area on the smallest cog of a cassette that the lock ring "locks" into, then no. It is just held in by friction as all of the SS cogs I have seen are smooth. You still will need a chain whip to hold the cog while you loosen the nut. Sorry if I misunderstood what you meant.

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  6. #6
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    Quote Originally Posted by bljacobs
    Thanks for the reply.. quick question..

    What type of lock ring is this? is it a generic one with threads that locks down across the splines?

    Brian
    The lock ring is the same as old style bottom brackets like <a href="http://www.jensonusa.com/store/product/BB308F08-Fsa+Bottom+Bracket++Lockring+Only.aspx"> this </a> These hubs are based on the old Shimano freehub cassette design that use a threaded cog (13/14T) on threaded splines as a lockring; the ID and threading was the same as the left side lock rings for loose-ball bottom brackets; the right ring is reversed threaded.
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    Last edited by aka brad; 05-14-2010 at 07:02 PM.
    Just one more rep and I get the toaster!

  7. #7
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    Quote Originally Posted by bljacobs
    Does not appear to be a shimano type design...
    As already mentioned...

    It's a Shimano uni-glide design (external freehub body threading) instead of the internally threaded hyper-glide design.

  8. #8
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    Looks like the same thing as my Bontrager S/S hub from my 2009 Rig

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