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Wheel Balancing - Anybody done this?

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  • 07-03-2017 12:45pm
    #1
    lukegjpotter
    Registered Users Posts: 397 ✭✭


    Shane Miller (Cycling Maven's mate) has uploaded a video to YouTube, where he talks about wheel balancing. The Specialized Roval wheel near the end was horrific.

    Has anyone on here done this?

    Video for reference.



Comments

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    #2
    easygoing39
    Registered Users Posts: 1,375 ✭✭✭easygoing39


    Yes,done it with a pair of chinese 58mm carbon rims.


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    #3
    Cee-Jay-Cee
    Registered Users Posts: 12,235 ✭✭✭✭Cee-Jay-Cee


    So the imbalance is caused by the valve and not a defect with the wheel itself as implied by Miller. Obviously the longer the valve the more of an imbalance there will be.

    I wonder would the weight strips be as effective if they were fitted on the inside of the rim?


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    #4
    nordicb
    Registered Users Posts: 271 ✭✭nordicb


    Out of interest, why balance bike wheels?


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    #5
    TheBlaaMan
    Registered Users Posts: 3,444 ✭✭✭TheBlaaMan


    nordicb wrote: »
    Out of interest, why balance bike wheels?

    Did you watch the video?


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    #6
    nordicb
    Registered Users Posts: 271 ✭✭nordicb


    Sorry, it didn't appear on my work system, watched on the phone. Interesting if it really does make any difference in action...

    I think he should've put the axles on top of flat bars rather than in to the trueing stand, to eliminate the bearings friction.


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    #7
    [Deleted User]
    Posts: 3,621 ✭✭✭ [Deleted User]


    Potential source of high speed wobbles?


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    #8
    Juan More Time
    Registered Users Posts: 173 ✭✭Juan More Time


    Will give it a try and report back next week....


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    #9
    Derrydingle
    Registered Users Posts: 366 ✭✭Derrydingle


    I understand the wobble when it's of ground but would there be the same wobble when on the road?


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    #10
    py
    Registered Users Posts: 1,583 ✭✭✭py


    Derrydingle wrote: »
    I understand the wobble when it's of ground but would there be the same wobble when on the road?

    No wobble when it's on the ground but extra resistance and thus extra power (maybe not all that much but some at least) required to rotate the wheel when there's an imbalance.


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    #11
    Cee-Jay-Cee
    Registered Users Posts: 12,235 ✭✭✭✭Cee-Jay-Cee


    It only took 17grams to balance the wheel so I don't think it would equate into any measurable loss if 'unbalanced' wheels were being used in a race/TT considering the average rider is 65-75kg in weight (ie 3000 to 4000 times heavier than the imbalance)

    The only place it may have a miniscule effect is in an ultra-smooth velodrome...possibly (but probably not)


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    #12
    magicbastarder
    Moderators, Category Moderators, Arts Moderators, Sports Moderators Posts: 49,617 CMod ✭✭✭✭magicbastarder


    ever driven a car with unbalanced wheels, though? again, a miniscule weight to add but can be noticeable.


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    #13
    07Lapierre
    Registered Users Posts: 8,248 ✭✭✭07Lapierre


    tip: when fitting a speedo magnet to spokes, always attach it to the spokes opposite the valve.
    If fitting a garmin hub speed sensor, fit it to the Hub opposite the Valve.


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    #14
    gaffmaster
    Registered Users Posts: 718 ✭✭✭gaffmaster


    I wonder how much the weights (even with added gaffer tape) affect the aero-efficiency of those deep section wheels in the video.


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