Home Forums Tech Talk Slight wobble?

This topic contains 7 replies, has 5 voices, and was last updated by  Troy V Smith 1 year ago.

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  • #9355

    Troy V Smith
    Participant

    Hey All – I came off the track from a run and while coming down pit lane, I noticed, what seemed to be a slight wobble?  Didn’t notice it at speed however.  When I got home, I mounted a dial indicator to the frame and set it above the axle.  When rotating the axle, I got a difference from high to low of .08mm.  I wouldn’t have thought that to even be enough to feel?  But is that enough of a difference to justify replacing the axle?

    #9400

    Steen Carstensen
    Participant

    You are correct, the axle is fine, thats only 0.0032″ TIR which is very close to perfect.

    #9403

    William Martin
    Participant

    Have you checked the wheel(s) for possible damage? If not the axle…that’s the next likely thing that may be bent.

    #9407

    Matt Dixon
    Participant

    Rubber pick up exiting track?

    #9411

    Troy V Smith
    Participant

    Yea, I thought about the rubber right away, but there was nothing apparent on the tires.  I dug a little deeper and found that the right front wheel seemed to have just a very small bit of wobble to it (just enough to see while rotating).  So I pulled that wheel/tire off and put on another – still had a wobble – tried another – still a mild wobble, but better.  So I pulled the front hub and replaced with new hub – still had a wobble but not nearly as bad (hard to see).  Finally grabbed another wheel – and wobble was gone.

    Looks like the front hub was tweaked, and was just amplified by an additional wheel slightly out of round.

    OK, so after all this, I used the new hub on the spindle and I went through each and every one of my wheel/tire sets.  I have three full sets of wheels – of the 12 wheels (front and rear), looks like there are 9 which I can see a wobble with my eye!   Wheels are pretty old and have been through quite a bit of racing – probably three years worth – I am guessing we don’t want any noticeable “wobble” in the wheels and there is no real action to take other than get a couple new sets?  Trash em’?

    #9533

    William Martin
    Participant

    Big rubber hammer?  hehe

     

    #9541

    bo rougeou
    Participant

    Knowing some of that bunch you race with I’m surprised more wheels don’t ‘wobble’.

    #9549

    Troy V Smith
    Participant

    Makin’ me chuckle Bo – even after dropping the cash on a couple new sets!

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