badly fitting cassette

kleinstroker
kleinstroker Posts: 2,133
edited July 2012 in Workshop
Hi

I'm just building my new bike and trying to fit a 9 speed Tiagra cassette on my Bontrager Race Lite wheel. It all fits but the locking ring can't get low enough to tighten properly. If I use a 1mm spacer behind the cassette, the rivets that go through the cassette protrude just enough so that the 12T ring can't mesh with the splines of the freehub, so again it moves!!

What can I do?

Cheers

Comments

  • rpd_steve
    rpd_steve Posts: 361
    The spacer is only needed for 10s. For 9 speed you shouldnt need it... (Been a while though!)
  • kleinstroker
    kleinstroker Posts: 2,133
    Cheers Steve..

    I bought a 2mm spacer as well, so may have to file it down so it fits over the bottom splines of the freehub, see if that works.
  • nicklouse
    nicklouse Posts: 50,673
    You don't need any spacers.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • kleinstroker
    kleinstroker Posts: 2,133
    That seems to be the consensus, but why are the rings loose? Should I put a washer under the locking ring, or buy another locking ring?
  • cycleclinic
    cycleclinic Posts: 6,865
    Sounds like you need a 0.5mm spacer or something similarly thin but again you should not need it. Have you tried a different cassette top rule that out.
    http://www.thecycleclinic.co.uk -wheel building and other stuff.
  • smidsy
    smidsy Posts: 5,273
    You say the lockring can not go low enough to tighten without a spacer so how will a spacer help this (it would increase the stack height)?

    Be sure that you have the sprockets installed correctly as some have integerated spacers and others need a separate spacer (of the appropriate speed) between them. Everything needs to sit in the correct order (and the right way round) in order for the stack height to work.

    9 speed should fit without any spacers before the first (largest) sprocket i.e nothing between the hub and the first part of the cassette.
    Yellow is the new Black.
  • nicklouse
    nicklouse Posts: 50,673
    kleinstroker wrote:
    That seems to be the consensus, but why are the rings loose? Should I put a washer under the locking ring, or buy another locking ring?
    are you missing part of the cassette?

    post up pics of the cassette spread out in cog order. Like this

    Shimano_105_9-speed_cassette_12x23_03.JPG

    this is a 105 cassette but you get the idea.

    or check against the shimano exploded views

    http://techdocs.shimano.com/media/techd ... 799948.pdf
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • kleinstroker
    kleinstroker Posts: 2,133
    Snap!! Everything seems ok it's just the locking ring that's different.

    cassette.jpg
  • nicklouse
    nicklouse Posts: 50,673
    what does it say on the lock ring?

    i bet it is for a different cassette like a 10spd.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • kleinstroker
    kleinstroker Posts: 2,133
    Actually looking at it, I may have bought the wrong size locking ring. I thought they sat inside the sprocket but in the photo of yours its wide enough to sit on top of the sprocket. That's probably it!! Doh!!
  • kleinstroker
    kleinstroker Posts: 2,133
    You beat me to it! Yeah I bought an 11T locking ring and my smallest is 12T.

    Cheers
  • nicklouse
    nicklouse Posts: 50,673
    an 11T 9spd lock ring will work with a 12T cog with no issues.

    but at Tiagra level you dont get alloy lockrings.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • keef66
    keef66 Posts: 13,123
    You seem to have spacers between the smaller sprockets. On mine the first 2 or 3 are self spacing, ie they have the spacer built in.
    Mine is 10 speed 105 though
  • nicklouse
    nicklouse Posts: 50,673
    keef66 wrote:
    You seem to have spacers between the smaller sprockets. On mine the first 2 or 3 are self spacing, ie they have the spacer built in.
    Mine is 10 speed 105 though
    and it alldepends on what ratios you have as well as the number of speeds.

    if you look at the PDF above some have no spacers some have 1 some have 2 and some have 3!
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • keef66
    keef66 Posts: 13,123
    But none of them have a spacer between the 2 smallest sprockets as the OP's pic has
  • nicklouse
    nicklouse Posts: 50,673
    as it is in the wrong place, everything that should be there is there and nothing extra.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • keef66
    keef66 Posts: 13,123
    Fairy Nuff
  • kleinstroker
    kleinstroker Posts: 2,133
    well spotted!! I must have put the spacer in the wrong place in the photo, it's the one that goes behind the largest loose sprocket. I have ordered another locking ring for 12T, which is much wider so should sit on top of the grooves in my 12T sprocket. Hopefully that will solve it
  • kleinstroker
    kleinstroker Posts: 2,133
    12T lockring arrived and now my cassette doesn't rattle! Thanks for everyones help

    cheers

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