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  1. #1
    Jag is offline
    mtbr member
    Reputation: Jag's Avatar
    Join Date
    Jan 2004

    Calling all / any disc brake gurus....

    I have Magura Marta brakes (wavy rotors). Anyway I have 2 wheelsets (one is a King wheelset and the other is a XT wheelset). I intended to alternate between the 2 for different riding conditions etc. Both wheelsets have the Magura wavy rotors. My problem is that when I go to put the XT wheels on the brake pads rub horribly against the rotors (the front more than the back). The bike was orginally set up with the King wheels so they run without rubbing. Is there some trick to making the wheelset interchangable without mucking / moving the calipers?

    All you racers out there that use training wheels and race wheels, do you have the same problems?

    Any advise would be appreciated.



  2. #2
    Reputation: The Squeaky Wheel's Avatar
    Join Date
    Dec 2003
    The problem is likely due to differences in the width of the hub thus leading to different rotor positioning in regards to the pads.

    I can think of two possible solutions:
    1- readjust the caliper spacing shims everytime you change wheels
    2- Syntace rotor shim - this shim goes between the rotor & hub and will allow you to dial in the spacing so that each rotor fits perfectly within the brake. This is what I would do.

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