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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 03-30-12, 10:55 PM   #1
vivithemage
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installing AVID BB7 on my Marin Muirwoods 29er *figured it out!

I am trying to direct replacement to the Hayes' MX-4's or whatever are on here, and they don't see to fit very well...like they're off just slightly. There is about a half inch of room where the rotor doesn't hit pad, and the caliper is a bit too far out (quarter inch, maybe less)?

Is there something I need to purchase to make these guys fit on here?

figured it out :

okay, glad I took pictures ... figured it out!

I had the front on the rear, and the rear on the front, fits solidly now .

Last edited by vivithemage; 03-31-12 at 12:48 PM.
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Old 03-31-12, 04:58 AM   #2
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they should be a direct replacement. are you using the cps washers?
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Old 03-31-12, 05:37 AM   #3
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Did you replace the rotors as well as the calipers? Some rotors can be interchanged between brands, but not all. Perhaps the brake track on your rotors are not wide enough.
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Old 03-31-12, 07:15 AM   #4
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What Dan said. It sounds like it's not that your calipers are too far out but that the rotors are not large enough diameter to reach them.
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Old 03-31-12, 09:50 AM   #5
vivithemage
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Yup, I have new rotors that the kit came with ... what do you mean CPS washers?

the originals were 160mm, and the new one is 160mm.
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Old 03-31-12, 10:36 AM   #6
vivithemage
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okay, I think I might need a new bracket? I couldn't use my old one since the caliper mounted differently, how do I know which bracket this bike needs?
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Old 03-31-12, 12:41 PM   #7
vivithemage
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I took some pictures so you could see :

http://vivithemage.com/zen/vivi/BB7/

the CPS bolts are pretty loose, the wheel will spin, but there is some resistance, even loosening up the brake pads...you can see how off the caliper is from the rotor.
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Old 03-31-12, 12:47 PM   #8
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okay, glad I took pictures ... figured it out!

I had the front on the rear, and the rear on the front, fits solidly now .
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