Cassette Knocking noise

bdave262000
bdave262000 Posts: 270
edited July 2011 in Commuting chat
Cycling home yesterday I noticed a knocking noise coming from my rear wheel when free wheeling. On closer insepection at home it appears to be coming from the cassette (1 knock every revolution). I'm thinking about buying one of those chain whip things to remove the cassette and try and see what the problem is. My bike maintenance knowledge is limited although I would like to learn more and I would appreciate some advise on 1. whether anyone knows what may be the cause of the knocking and 2. If I do start dismantling my bike I end up with a load of cogs scattered on the floor and have made things worse, how difficult is this to do. or should I just get my LBS to do it. Maybe this should be one for the maintenance forum but you seem to get more response here.
Fat lads take longer to stop.

Comments

  • nicklouse
    nicklouse Posts: 50,673
    as the cassette does not move it is more likely to be the freebody.

    have a read of Parktools and Sheldons pages.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • welkman
    welkman Posts: 396
    Do you get any associated lack of drive?
  • t4tomo
    t4tomo Posts: 2,643
    nicklouse wrote:
    as the cassette does not move it is more likely to be the freebody.

    have a read of Parktools and Sheldons pages.

    I had a 1982 Vauxhall Chevette where the cassette rarely moved, and when it did it made an awful sound. In addition the speaker was "loose mounted" in the open glove tray and occasionally used to get sweet wrappers caught in it which made the sound quality even worse.
    Bianchi Infinito CV
    Bianchi Via Nirone 7 Ultegra
    Brompton S Type
    Carrera Vengeance Ultimate Ltd
    Gary Fisher Aquila '98
    Front half of a Viking Saratoga Tandem
  • bdave262000
    bdave262000 Posts: 270
    welkman wrote:
    Do you get any associated lack of drive?

    No, just a knocking noise.
    Fat lads take longer to stop.
  • Gussio
    Gussio Posts: 2,452
    If the cassette wobbles slightly, the lockring might need tightening up?
  • Redhog14
    Redhog14 Posts: 1,377
    http://www.youtube.com/user/ONE10Sports#p/u/4/WwryRfQSH_4

    have look through this first, there are plenty more on Youtube.

    I did this for the first time on Monday night and thought it was pretty straight forward.
    Sheldon Brown is also worth a look.
    Good luck.
    @surroundedbh

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