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Sram Force noise

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  • 26-01-2017 11:41am
    #1
    BGT
    Registered Users Posts: 410 ✭✭


    I'm using Sram Force 11 speed on a Focus Izalco. When I stop pedalling a very loud noise seems to be coming from the rear derailleur area. When I turn the pedals again it stops. Anyone else experience this, and any idea how to stop it happening? Could it be the jockey wheels need replacing? Cassette and chain are relatively new.


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    #2
    Eamonnator
    Registered Users Posts: 6,561 ✭✭✭Eamonnator


    When you stop pedalling, the chain stops moving, and the jockey wheels stop moving. So it seems to me, that your problem is not with the jockey wheels.
    Does the noise occur in all gears?
    Is your free hub in good condition?


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    #3
    Lumen
    Registered Users Posts: 31,084 ✭✭✭✭Lumen


    What sort of very loud noise?

    https://www.youtube.com/watch?v=oKbKfxu5_oQ


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    #4
    BGT
    Registered Users Posts: 410 ✭✭BGT


    I interchange wheels from time to time and it happens in both cases. Pretty sure free hubs are in good condition. The noise is not the clicking noise of a hub, more of a very loud grinding/rubbling sound. Only time I stop pedalling is generally on a descent when I'd be well down on the rear cassette.


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    #5
    Lumen
    Registered Users Posts: 31,084 ✭✭✭✭Lumen


    Pie plate rubbing?


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    #6
    Lumen
    Registered Users Posts: 31,084 ✭✭✭✭Lumen


    Or maybe b screw adjustment.


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    #7
    BGT
    Registered Users Posts: 410 ✭✭BGT


    The sound is not unlike carbon rim braking, but not as high pitched.


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    #8
    OleRodrigo
    Closed Accounts Posts: 1,514 ✭✭✭OleRodrigo


    I've heard this before. Its the sound of the Gods saying ' buy a new bike man, do it '


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    #9
    Plastik
    Registered Users Posts: 2,980 ✭✭✭Plastik


    What wheels are they?


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    #10
    BGT
    Registered Users Posts: 410 ✭✭BGT


    OleRodrigo wrote: »
    I've heard this before. Its the sound of the Gods saying ' buy a new bike man, do it '

    I'm trying to avoid that sound....

    Wheels are fairly high-end and relatively new Mavics.


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    #11
    Eamonnator
    Registered Users Posts: 6,561 ✭✭✭Eamonnator


    When the bike is stationary, and you lift the back wheel off the ground and spin it, does the noise occur?


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    #12
    TheDocMan
    Registered Users Posts: 1,660 ✭✭✭TheDocMan


    Often come across this with Mavic wheels and only noticeable when freewheeling.You need the freehub removed, cleaned and especially check the freehub seal.
    Very much doubt it's anything to do with drive train


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    #13
    BGT
    Registered Users Posts: 410 ✭✭BGT


    Eamonnator wrote: »
    When the bike is stationary, and you lift the back wheel off the ground and spin it, does the noise occur?

    No. Only when freewheeling which of course my old coach used to warn me not to do 😱. Going to follow Doc's advice and will report back. Thanks for all the inputs, especially the one about the new bike, think electronic beckons.


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    #14
    Plastik
    Registered Users Posts: 2,980 ✭✭✭Plastik


    Double post


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    #15
    Plastik
    Registered Users Posts: 2,980 ✭✭✭Plastik


    Not surprised to hear that it's Mavics, though I was expecting to hear that you were on Aksiums, which seem to have a problem with a nylon bush in the freehub that can cause the symptoms your describing. A bit of googling might shed some more light/youtube videos of others with the same problem.


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    #16
    TheDocMan
    Registered Users Posts: 1,660 ✭✭✭TheDocMan


    I've come across various noises/screaching sounds etc from Mavic equipes/elites/premium/sl and various Cosmics. Not always wear or age-related. As above that contact seal is usually source of problems and some general muc that's gotten in or built up.
    Fairly simple freehub to remove and clean/ work with but be careful of a slim spacer washer that often gets lost when removing.


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