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Fitting Campag cassette

dave milnedave milne Posts: 703
edited November 2009 in Workshop
Hi,

I swapped the cassettes on my wheels around and I can't get the newer one back on properly. It's a year old campag caentaur 12-26, the rings and spacers are all separate except for the smallest 2. It seems to fit on fine, the gaps between cogs are all the same but it can't be flush on the hub as it is sticking too far out to reattach to the bike. I can't for the life of me work out what's wrong, is there any trick or anything I need to pay attention to when fitting the first sprocket?

Posts

  • beetle1beetle1 Posts: 189
    Are you sure you have put the last one on the correct way round. Are you saying you cant get the lock ring on?
  • dave milnedave milne Posts: 703
    I think so, I have fit them all according to the groves on the hub. The lock ring goes on fine but the cassette is still about 5mm to big to fit. I suspect I'm being an idiot
  • beetle1beetle1 Posts: 189
    If the cassette has gone on ok than i think there must be something wrong with how you are trying to put it into the frame.
  • kozzokozzo Posts: 182
    Accidental extra spacer ?
  • dave milnedave milne Posts: 703
    I don't think so, all the sprockets are evenly spaced and have the same gap as my 12-25 which I can fit fine, it's almost like the first one hasn't quite gone on properly

    I will try again and post photos if I don't succeed

    cheers
  • magliacelestemagliaceleste Posts: 748
    I didn't think Campagnolo did a 12-26 cassette. They do make a 13-26 though.

    No chance the sprockets have got muddled up?
  • nickwillnickwill Posts: 2,735
    With Campag it's 12-25, 13-26 and 13-29. No 12-26!
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  • NadderNadder Posts: 73
    Hi,

    i had the same when I put my campag cassette on, just check that all the sprockets are on the correct way round, the teeth should be slightly sloping in towards the hub (off the top of my head) i had the last two facing the other way by mistake and the cassette would rub on the frame!

    Hope this helps
  • dave milnedave milne Posts: 703
    Hi,

    I've checked the sprockets and as far as I can tell you can't fit them the wrong way round, one of the grooves on the hub is narrower than the others and ensures the sprocket can only be fitted one way.

    I have attached some pics of the cassette fitted on the wheel and then the wheel on the frame, if anyone can spot anything would be much appreciated.

    Cheers


    pic 1
    pic 2
    pic 3
    pic 4
    pic 5
  • beetle1beetle1 Posts: 189
    Hi mate, your pics are not very clear but are you sure you have the correct skewer in the correct wheel? ie the longest one in the rear.
  • dave milnedave milne Posts: 703
    yes my camera is censored , 8megapixels of fuzziness.

    It's definitely the right skewer, it fits on that wheel and my 12-25 fine
  • kozzokozzo Posts: 182
    9 speed spacers? Dirt in the splines?
  • dave milnedave milne Posts: 703
    it shouldn't be a spacer issue, that cassette was new last year and I;ve never had a 9 speed one to get it mixed up with.

    When you say dirt in the splines, is that on the hub? I could certainly give it a good clean I guess
  • dave milnedave milne Posts: 703
    it shouldn't be a spacer issue, that cassette was new last year and I;ve never had a 9 speed one to get it mixed up with.

    When you say dirt in the splines, is that on the hub? I could certainly give it a good clean I guess
  • kozzokozzo Posts: 182
    Maybe some dirt (in the grooves of freewheel body) stops the biggest sprocket to enter deep enough?

    I'm running out of ideas.... :roll:
  • dave milnedave milne Posts: 703
    Finally sorted it. I stripped both cassettes down, cleaned them and reassembled to discover I had mixed up the smallest cogs on each casette and the 12 from my 12-25 don't fit properly on the 13-25.

    Cheers for everyone's advice
  • zedderszedders Posts: 509
    I've had a similar problem.
    Sunday in the rubbish rain, I decided to clean garage out and then started messing about with me bike! Whoops, what a mistake. Should have just left it alone. :(

    Anyways I took my ten speed 2009 centaur casette off, gave it a bit of a clean, and then re fitted it. Now if feels as though somethings jamming it? When the bike is on my stand you have to put some effort to move the pedals instead of running smooth and easy. Also when you spin the pedals backwards instead of the casette spinning allowing you to pedal backwards the casette freezes?

    Am happy that its just the way I fitted it, but as said in this thread there are groves, so each ring only appears to fit on one way? Can I ask do the teeth of each ring line up when its all put back together correctly? Or any common mistakes made?
    "I spend my petrol money on Bikes, Beer, Pizza, and Donuts "

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  • ChrisszChrissz Posts: 727
    There is a little arrow/triangle on each sprocket - put the first sprocket on then ensure that the arrow on the next one lines up with the first. It should all then slot in dead easy - if you can't see the arrow then you have the sprocket back to front = Simples :)
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