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Noises

  • 13-02-2012 9:59am
    #1
    reilig
    Closed Accounts Posts: 7,401 ✭✭✭


    Sorry if this topic has been done to death, but its really bugging me. I have a new Lapierre Audacio 400 Triple. Its a fabulous bike and I have cycled over 1000km on it since I got it. However, it is making some noises and I want to get them sorted. Its fine when I'm on the flat, but when I change down into the middle ring or the small ring and put the bike into a low gear to grind out a climb, it makes a loud ticking noise. Its from the rear wheel, but I don't know where. Its only audiable when i'm in first, second or third gear in the middle or granny ring. If i move up to any higher gears it stops.

    The noise comes with every turn of the rear wheel - but only when I'm pedaling - if I'm freewheeling, there is no noise. The noise is only audiable when pressure is on. ie. When I'm cycling up a hill. No noise on the flat. I'm fairly heavy so that could be helping it ;)

    Has anyone got any ideas what it might be?

    Any advice appreciated.

    reilig


Comments

  • #2
    bcmf
    Closed Accounts Posts: 6,679 ✭✭✭bcmf


    Sounds like you need to trim your front mech.
    When you drop to the middle and inner ring and move the chain across the cassette your chain will start to rub of the front mech -hence why it only happens when you are pedalling.
    When it starts to happen give your shifter 1 click with the inner lever or with outer lever and that should sort it.


  • #3
    reilig
    Closed Accounts Posts: 7,401 ✭✭✭reilig


    bcmf wrote: »
    Sounds like you need to trim your front mech.
    When you drop to the middle and inner ring and move the chain across the cassette your chain will start to rub of the front mech -hence why it only happens when you are pedalling.
    When it starts to happen give your shifter 1 click with the inner lever or with outer lever and that should sort it.

    I honestly don't think its the Front Mech.

    The noise is definitely coming out of the rear wheel - from the spokes or the hub or the casette :(


  • #4
    bcmf
    Closed Accounts Posts: 6,679 ✭✭✭bcmf


    You may need to slightly adjust the cable tension on the rear mech as it may not be fully engaging.If its only happening when you are pedalling then its something up with chain alignment with mechs or cassette.
    However the noise of your freewheel when coasting may drown out any noise.
    Dont forget when moving on the bike most creaks sound like its coming from BB or back wheel.


  • #5
    bcmf
    Closed Accounts Posts: 6,679 ✭✭✭bcmf


    And if youhavent already read this -> http://www.boards.ie/vbulletin/showthread.php?t=2056247429
    the it may be of help.


  • #6
    Swirly Whirly
    Registered Users, Registered Users 2 Posts: 30 ✭Swirly Whirly


    Try work your way through this article .

    Is it once per wheel revolution or once per pedal revolution?


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  • #7
    studiorat
    Closed Accounts Posts: 6,408 ✭✭✭studiorat


    I'll bet it's something banging off the bit of cable that's sticking up from the front mech. When you change gear it's clicking off the crank or something...


  • #8
    Sr. Assumpta
    Registered Users, Registered Users 2 Posts: 411 ✭✭Sr. Assumpta


    Can I suggest that, if I am reading it correctly, in the gearing you are describing (when the noise occurs), you are 'cross-chaining'...... & your chain is 'slapping' the chainstay? Look down next time, you'll see it happening if it is this.

    I have tried to recreate this, in an exaggerated way, for the photo below....

    6868945727_84244ba161_m.jpg


  • #9
    reilig
    Closed Accounts Posts: 7,401 ✭✭✭reilig


    Thanks for the info and advice. Some great advice and ideas. After trawling through some of the articles, it brought me to the quick release skewer. I checked mine and found it to be relatively loose. (ie. I was able to open it, turn it 1 full revolution and close it again). It was late last night when I did this so I haven't had a chance to road test it yet. Could this be the problem?

    How tight should the skewer be?

    Is there a danger of over tightening it?


  • #10
    manwithaplan
    Registered Users, Registered Users 2 Posts: 2,200 ✭✭✭manwithaplan


    The quick release shouldn't be too tight. Just enough to leave an impression on the palm of your hand when closing it. You shouldn't have to put any real force into it.


  • #11
    Dubba
    Registered Users, Registered Users 2 Posts: 895 ✭✭✭Dubba


    reilig wrote: »
    Thanks for the info and advice. Some great advice and ideas. After trawling through some of the articles, it brought me to the quick release skewer. I checked mine and found it to be relatively loose. (ie. I was able to open it, turn it 1 full revolution and close it again). It was late last night when I did this so I haven't had a chance to road test it yet. Could this be the problem?

    How tight should the skewer be?

    Is there a danger of over tightening it?


    Defo. Happend to me awhile back. My LBS spent ages trying to find out where the noise was comming from, turned out that the rear QR needed to be very tight. I've heard other people had the same issue, so presumably it common enough.


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