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  1. #1
    wuss
    Reputation: dropadrop's Avatar
    Join Date
    Sep 2005
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    2,364

    mixing different brand calipers and adapters

    I'm considering getting a new brakeset, and Formulas seem pretty nice. I have centerlock hubs, and would prefer running centerlock rotors over formulas with adapters. All the shops seem to be selling formula adapters and rotors as a bundle, and not listing the adapters separately...

    So... Can I use a formula caliper and some other brand adapter? Is there any difference between adapters (I would imagine it could not be more then the ability to move the caliper further to the sides if the rotor size is otherwise comparable).

  2. #2
    mtbr member
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    Join Date
    Jul 2003
    Posts
    6,689

    Not really....

    the ability to move the caliper from side to side is built into the caliper not the adapter. With a post mount style caliper there are sloted mounting holes in the mounting tabs on the caliper that allow for lateral movement. The adpater itself is completely stationary once bolted on. IS mount calipers require shims to move them laterally. Or as in the case of Avid brakes a combination of sloted mount tabs and the CPS washer system allow for both lateral and angular adjustment of the caliper.

    It's becoming more common to find cross compatability with caliper mount adapters. But you still have to be cautious. There are brake calipers out there that require a specific shape of adapter to accomodate the shape of the caliper, or a specific orientation of the caliper so that once bolted up the brake pads properly align with the braking surface of the rotor. It's usually best to go with an adapter made by your brake manufacturer unless you know of someone that has used another adapter with the same brakes you intend to use sucessfully.

    As for rotor compatability. Not all rotors are created equal. There are rotors out there that are not exactly the same as others. Variations in braking surface width, differences in actual diameter of the rotor, and rotor thickness can create compatability problems. All you can do in many cases is try it and see. Or check out the sticky thread at the top of the page entitled "Using Shimano Centerlock (or any other) rotors with another brand caliper" and see if someone has used the set up that you are intending to use sucessfully.

    Universal Cycles, www.universalcycles.com sells Formula rotors and adapters seperately or as sets, your choice. So you can buy the caliper and lever sets and then by the caliper adapters by themselves if you like. From there it's just a matter of trying the set up with your current rotors and see if they are compatable.

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