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  1. #1
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    Rear wheel problem

    I just built up a Mojo sl a few weeks ago. The wheel set i have used are hope pro 2 hubs on mavic XM819's.

    I have been riding it for a few weeks now but have just realised that the rear wheel...or the rim isnt central in the swing arm. It is about 4 or 5mm closer to the drive side.
    The caliper lines up with the rotors and everything else looks fine.

    Is this bad for the frame? will it cause any problems? Has this most likely been cause by a fault with the wheel builder? Like i said i have been riding it and haven't noticed it until now.

    Any feed back would be appreciated.

    Cheers

  2. #2
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    Quote Originally Posted by brommy
    I just built up a Mojo sl a few weeks ago. The wheel set i have used are hope pro 2 hubs on mavic XM819's.

    I have been riding it for a few weeks now but have just realised that the rear wheel...or the rim isnt central in the swing arm. It is about 4 or 5mm closer to the drive side.
    The caliper lines up with the rotors and everything else looks fine.

    Is this bad for the frame? will it cause any problems? Has this most likely been cause by a fault with the wheel builder? Like i said i have been riding it and haven't noticed it until now.

    Any feed back would be appreciated.

    Cheers
    Check the dish of the wheel with a dishing tool or flip the wheel over and install it with the rotor on the drive side if you can and see if the rim is closer to the other side. If the error changes sides the problem is in the wheel. If the error stays on the same side, then something is up with the dropouts (unlikely).
    H

  3. #3
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    Thanks Hans.

    Will check it tonight. I highly doubt its the drop outs either.

    I spose if its the wheel then it needs to be re-laced to the hub?

  4. #4
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    Quote Originally Posted by brommy
    Thanks Hans.

    Will check it tonight. I highly doubt its the drop outs either.

    I spose if its the wheel then it needs to be re-laced to the hub?
    It probably needs to be "Dished" that is, centered about the hub and the bikes centerline. There's a tool for checking this at any shop. They would need to "redish" the wheel, tightening and loosening spokes to move the rim to the right place.

    H

  5. #5
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    Is the rear triangle of the mojo offset to one side?

    So this is why the rear wheel needs to be 'dished'.

    Is this correct?

  6. #6
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    Quote Originally Posted by brommy
    Is the rear triangle of the mojo offset to one side?

    So this is why the rear wheel needs to be 'dished'.

    Is this correct?
    No, dishing is only required for a wheel not dished to the center. The bike should be ready for a true wheel.

    "I must not be crazy because I'm seriously questioning my sanity"

  7. #7
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    Quote Originally Posted by brommy
    Is the rear triangle of the mojo offset to one side?

    So this is why the rear wheel needs to be 'dished'.

    Is this correct?
    Real wheels on bikes with several gears are a little funny because the rear gearing takes up so much room that the rim is not really lined up with the center of the hub.

    H

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