wheel balancing

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Comments

  • Garz
    Garz Posts: 1,155
    P_Tucker wrote:
    :lol: jesus wept. Of the total resistance facing the rider, what percentage do you hypothesise that the tyre deformation caused by a slightly imbalanced rim would be? To the nearest 0.0000000001% please.

    I would rather invest my time on getting more aero! :wink:
  • explosifpete
    explosifpete Posts: 1,327
    My 60mm deep tubs are unbalanced and it is noticeable when riding and if you put it on a work stand and pedal the bike pulsates so much the stand starts rocking so I thinks is totally worth doing.
    http://www.iwaxstudio.co.uk/
  • rpd_steve
    rpd_steve Posts: 361
    http://www.zipp.com/support/faq/faq.php
    A few uPper end bike builders also offer it as a service. As you say, on carbon rims with no pin/weld it can be quite noticeable.
  • explosifpete
    explosifpete Posts: 1,327
    Also in response to mr angry P_tucker, alloy wheels do have weight built in to keep them balanced, every noticed that the weld/pinned joint is opposite the valve hole?
    Anyway, I rode my balanced wheels yesterday and they rode well, before they pulsated and it felt like i was riding on egg shaped wheels...so For the sake of 2 minutes and some free weights I'm glad i've done it
    http://www.iwaxstudio.co.uk/
  • ugo.santalucia
    ugo.santalucia Posts: 28,336
    explosifpete wrote:
    My 60mm deep tubs are unbalanced and it is noticeable when riding and if you put it on a work stand and pedal the bike pulsates so much the stand starts rocking so I thinks is totally worth doing.

    Pretty much all bikes do that, but with light carbon rims and long valves it is a bit more noticeable... ultimately if it bothers you when you go down a hill at 40 mph +, it makes sense getting it balanced, if it doesn't then it's a waste of time/money
    left the forum March 2023
  • rpd_steve
    rpd_steve Posts: 361
    ugo.santalucia wrote:
    explosifpete wrote:
    My 60mm deep tubs are unbalanced and it is noticeable when riding and if you put it on a work stand and pedal the bike pulsates so much the stand starts rocking so I thinks is totally worth doing.

    Pretty much all bikes do that, but with light carbon rims and long valves it is a bit more noticeable... ultimately if it bothers you when you go down a hill at 40 mph +, it makes sense getting it balanced, if it doesn't then it's a waste of time/money

    I think thats exactly the point. If it bothers you, change it! If your a cautious descender anyway then an added shimmy is really not what you want! I find that the wobble is most un-nerving when braking from high speed (45mph+) whilst still descending - causes a tank slapper of sorts. As Urgo said, with carbon hoops and 50mm valve extenders the imbalance can be quite bad, if you ride in a situation where imbalance bothers you.

    Cirtanly wont do any harm.

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