Cassette Tightness

fto-si
fto-si Posts: 402
edited August 2007 in Workshop
I had delivery of some Mavic wheels yesterday and after I have swapped the cassette over onto the new rear wheel I cannot get the sprockets tight, even with the nut done up as tight as I can there is still play in them.
Do I need some sort of spacer?
Just incase this information is relevent its a Shimano cassette from a Specialized Roubaix.
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Comments

  • stevec205gti
    stevec205gti Posts: 366
    There is a spacer available - it sits behind the cassette. When I bought my Mavic Aksiums it came with a spacer in the pack - might be worth ringing whoever you got yours from to see if it should have one.
    Has the head wind picked up or the tail wind dropped off???
  • philak
    philak Posts: 144
    I've been searching for posts on this subject. I just bought Aksiums and then realised they are 10 speed hubs :oops: . When i put my 9 speed cassette on i had to find a spacer from some old cassettes at my LBS and sit it behind the cassette.
    Torqued it up to 40nm as it says on the lock ring and it works fine now.

    One other thing tho, the wheel the cassette came off had the plastic disc on the spokes next to the cassette. I'm assuming its in case the chain jumps off the largest cog and the disc stops the chain getting into the spokes? Well that bit of plastic won't fit the Aksiums so i don't have one. Should i worry?

    Phil
  • aracer
    aracer Posts: 1,649
    Mavic freehub bodies are wider than normal Shimano ones (which are the same width for 9 & 10) so you need a spacer with any Shimano cassette.

    Bit of plastic is useful if your gears aren't adjusted properly (or possibly if they get damaged during use) as it stops you damaging the spokes if it overruns the big cogs. Looks very uncool though, and if you do have properly adjusted gears you shouldn't need it - not got one on any of my bikes, and haven't ever had a problem even on the MTB when I've bent the hanger.
  • XTCRider
    XTCRider Posts: 113
    I had the same issue with Mavic Crossrides for my MTB recently. I couldnnt get the cassette tight, turned out you needed a spacer which comes with the wheels. Got in touch with CRC where I got the wheels from and they told me to check the packaging as they had definitely put one in. I did and there it was a silver plasticy ring.. works fine now

    recheck packaging
    http://www.flickr.com/photos/xtcrider/sets/72057594126938720/

    I want to ride my bicycle, I want to ride my bike, I want to ride my bicycle, I want to ride it where I like
  • xbenhanleyx
    xbenhanleyx Posts: 73
    If you don't install the plastic bit, then I would strongly recommend regularly checking the limiters. After installing a new cassette a few months back, the chain jumped off the big cog and got jammed between the cassette and the spokes. Luckily, the wheel and spokes weren't damaged, but the only way I could release the chain was by removing the cassette. A bit of a problem if you are far from home.

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