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Slipping chain

  • 01-01-2013 10:08pm
    #1
    segasega
    Registered Users, Registered Users 2 Posts: 785 ✭✭✭


    Built up a cheap fixed gear a couple of years ago. Its a bit of a hack but it gets me to work and back. Recently the chain has been slipping and as you can see the chain isn't really sitting the the chainring very well. Any ideas? Cheers

    DSC03020.JPG


Comments

  • #2
    Raam
    Registered Users, Registered Users 2 Posts: 14,318 ✭✭✭✭Raam


    Chain might be the wrong size for the chainring and cog. 1/8th v 1/2 v 3/32nd or something like that, I can never remember.
    http://sheldonbrown.com/gloss_ch.html


  • #3
    segasega
    Registered Users, Registered Users 2 Posts: 785 ✭✭✭segasega


    Thanks Raam, only problem is, its the same chain I have always had on it and it never gave me problems until now, just out of the blue it started to do this.


  • #4
    colm_gti
    Closed Accounts Posts: 2,505 ✭✭✭colm_gti


    segasega wrote: »
    .....couple of years ago.....
    segasega wrote: »
    ....its the same chain I have always had on it

    Time for a new chain?


  • #5
    segasega
    Registered Users, Registered Users 2 Posts: 785 ✭✭✭segasega


    Thats what I was thinking, but as you can see in the photo, can a chain being a bit old make it sit that much off the chainring?


  • #6
    Raam
    Registered Users, Registered Users 2 Posts: 14,318 ✭✭✭✭Raam


    Maybe the rear wheel is too far to the aft? Bring it closer to the BB.


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  • #7
    Beasty
    Administrators, Social & Fun Moderators, Sports Moderators Posts: 78,393 Admin ✭✭✭✭✭Beasty


    The way it's sitting on the chainring the chain looks seriously stretched - you can check by measuring the links - they should be exactly 1/2 an inch long (so 20 links should measure exactly 10 inches) - a (very) small amount of stretch is inevitable and woud not cause a problem, but that chain looks to have stretched maybe half a link over half the circumference of the chainring. Definitely needs a new chain


  • #8
    07Lapierre
    Registered Users, Registered Users 2 Posts: 8,313 ✭✭✭07Lapierre


    Beasty wrote: »
    The way it's sitting on the chainring the chain looks seriously stretched - you can check by measuring the links - they should be exactly 1/2 an inch long (so 20 links should measure exactly 10 inches) - a (very) small amount of stretch is inevitable and woud not cause a problem, but that chain looks to have stretched maybe half a link over half the circumference of the chainring. Definitely needs a new chain

    +1 new chain and possibly a worn chainring.


  • #9
    Zorba
    Registered Users, Registered Users 2 Posts: 1,495 ✭✭✭Zorba


    segasega wrote: »
    Built up a cheap fixed gear a couple of years ago. Its a bit of a hack but it gets me to work and back. Recently the chain has been slipping and as you can see the chain isn't really sitting the the chainring very well. Any ideas? Cheers

    DSC03020.JPG

    Not being smart here but i'd clean the chain and chainset first and then see how it looks. Could be the chain or chainset is badly worn.


  • #10
    dubmess
    Registered Users, Registered Users 2 Posts: 282 ✭✭dubmess


    Can't really see from the pic but it looks like the chainring may be worth replacing as well, kinda looks like some of the teeth are broken, or at least very well worn.

    New chain will sort you out in the short term, but best off replacing both.


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