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help: Front wheel judder when braking.. wheel rim problem

  • 28-08-2013 10:34pm
    #1
    Registered Users, Registered Users 2 Posts: 815 ✭✭✭


    Need some advice for front wheel judder when braking at slow speeds.

    The juddering only seems to occur at slow speeds e.g. walking/jogging pace.

    If I'm travelling at a fairly fast speed and hit the brake then it's fine....only when I slow down does the juddering start.

    It seems to be high spots on the wheel rim corresponding to the spoke nipples... see pics

    k19opg.jpg


    iz449h.jpg


    ie1nw2.jpg

    The headset bearings seem to be fine and I'm using the front wheel from another bike for the time being but would like to get this sorted asap.

    Do I just need to get the spokes tensioned properly?

    Any advice would be very welcome.


Comments

  • Registered Users, Registered Users 2 Posts: 6,440 ✭✭✭cdaly_


    New wheel (or rim). Looks like you're heading for this. Check the braking surface. If it's concave it's definitely gone.


  • Registered Users, Registered Users 2 Posts: 815 ✭✭✭mp31


    cdaly_ wrote: »
    New wheel (or rim). Looks like you're heading for this. Check the braking surface. If it's concave it's definitely gone.

    I thought that as well but the surface feels flat across the width of the brake track... apart from them pesky bumps at the spokes. I'll check with a steel rule to be sure. Tks for the advice.


  • Registered Users, Registered Users 2 Posts: 2,099 ✭✭✭morana


    make sure your brake blocks are toed in!
    front bit of block has to hit the rim first


  • Registered Users, Registered Users 2 Posts: 648 ✭✭✭slap/dash


    the rim looks fcuked. looks like new wheel time


  • Registered Users, Registered Users 2 Posts: 815 ✭✭✭mp31


    slap/dash wrote: »
    the rim looks fcuked. looks like new wheel time

    Is it due to to much tension in the spokes?

    I was hoping to avoid the 'new wheel so soon after spending loads of cash on bike bits' scenario... :(


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  • Registered Users, Registered Users 2 Posts: 648 ✭✭✭slap/dash


    to tell you the truth, i am no whiz with mechanical things. i was thinking it might be that if the rim is not that high quality to begin with and someone overtightens them...maybe?

    i would say that wheels are the single most worthwhile thing to spend cash on though. i think someones selling a set of campagnolo khamsiums (sic) on here and they are by all accounts pretty solid wheels. in the long run though, id recommend getting a set handbuilt - suprisingly not that expensive


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