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Chainring

  • 15-05-2013 8:25am
    #1
    WEST
    Registered Users, Registered Users 2 Posts: 198 ✭✭


    The chain has started to slip only on the outer chainring when under load on my TREK 1.2. Bike is 3 years old at this stage.

    I suspect the chainring is worn since the teeth have a shark fin look to them. Can anyone advise if I need a new chainring? I've attached a pic of the chainring.

    Thanks,
    W.


Comments

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


    Looks well worn to me. Depending on how old the cassette and chain are, you might need new ones there.


  • #3
    beazee
    Registered Users, Registered Users 2 Posts: 1,343 ✭✭✭beazee


    Changing chain should help in short term. Otherwise chain + cassette + chainrings.


  • #4
    WEST
    Registered Users, Registered Users 2 Posts: 198 ✭✭WEST


    Cheer Raam, I'll check the condition of the cassette tonight. The chain has seen better days so I'll get a new one.

    Going to replace the chainring straight away, I near went over the handle bars yesterday when the chain slipped.


  • #5
    07Lapierre
    Registered Users, Registered Users 2 Posts: 8,382 ✭✭✭07Lapierre


    WEST wrote: »
    Cheer Raam, I'll check the condition of the cassette tonight. The chain has seen better days so I'll get a new one.

    Going to replace the chainring straight away, I near went over the handle bars yesterday when the chain slipped.

    If the chainring and cassette are the same age...you need a new cassette, new chain and new chainrings.


  • #6
    Wishbone Ash
    Registered Users, Registered Users 2 Posts: 25,065 ✭✭✭✭Wishbone Ash


    07Lapierre wrote: »
    and new chainrings.
    The small ring will probably be ok unless the OP does a lot of climbing.


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  • #7
    07Lapierre
    Registered Users, Registered Users 2 Posts: 8,382 ✭✭✭07Lapierre


    Wishbone Ash wrote: »
    The small ring will probably be ok unless the OP does a lot of climbing.

    Maybe, but if I was changing the cassette,chain and big chainring, I wouln't take the chance, I'd change the small chainring aswell.


  • #8
    Lumen
    Registered Users, Registered Users 2 Posts: 31,232 ✭✭✭✭Lumen


    07Lapierre wrote: »
    Maybe, but if I was changing the cassette,chain and big chainring, I wouln't take the chance, I'd change the small chainring aswell.

    Sounds like a great time to buy new bike!


  • #9
    07Lapierre
    Registered Users, Registered Users 2 Posts: 8,382 ✭✭✭07Lapierre


    Lumen wrote: »
    Sounds like a great time to buy new bike!

    Absolutely! :D


  • #10
    WEST
    Registered Users, Registered Users 2 Posts: 198 ✭✭WEST


    I'll check the rest of the components tonight and see what needs replacing. Seems like this might get expensive!

    I just had a look the chainrings on CRC. My current chainring has the following spec:

    FSA 110MM BCD
    50/34T
    S-9

    I take it the s-9 means it's 9 speed. So are the below 10 speed chainrings compatible with my bike trek 1.2 2010? I could not find a 10 speed chainring. From what I read elsewhere, a 9 & 10 speed are interchangeable.

    http://www.chainreactioncycles.com/Models.aspx?ModelID=38163

    http://www.chainreactioncycles.com/Models.aspx?ModelID=34735

    Thanks,
    W.


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