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Old 08-27-07, 01:36 PM   #1
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Use Avid BB7s with non-Avid rotor?

Hey all,

I want to put a drop handlebar on my MTB.

Since it currently has Magura hydraulic brakes, I'd need to switch to mechanical calipers.

The issue I'm facing right now is this: The bike is a Cannondale, and the hubs have FOUR bolts for the brake rotor. (Yeah, thanks for turning you back on a standard, Cannondale...).

I would think that the mechanical Avid brake calipers would work with the Magura rotor (yeah, it's a special rotor made by Magura just for Cannondale).

Anyone out there running Avid mechanical disc brakes with non-Avid rotors?

Thanks for any insight!
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Old 08-27-07, 02:17 PM   #2
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I'm running BB7s on Shimano centerlock rotors. No problem. As long as they are 160mm you should be good to go.
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Old 08-27-07, 03:09 PM   #3
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Yes, make sure they are the same rotor size.

The other other problem you [i]might]/i] run into is the width of the brake path. For example, the brake path on Hope rotors is considerably smaller than Avid, so if you ran a Hope rotor, theres a possibility that the pads will where unevenly and bevel to a certain extent.

Might as well give it a shot.
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Old 08-27-07, 05:51 PM   #4
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I actually installed Juicy Three's (stock spec'd for 160) on a Cannondale that was equipped with the 4 bolt setup. The front rotor is 180 and the rear is 140. Ridiculous. Couldn't replace them so I had to experiment with a few different mounting brackets to get the calipers lined up properly, but with the right parts you will be able to set it up. I wish I could give you a part number for the brackets I used, but the ones I wound up using were not labeled so I don't even know myself. The rotors themselves are a hair wider, but did not pose a problem and the brakes set up perfectly.
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