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campy brake pivot

Old 01-23-11, 09:42 PM
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oujeep1
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campy brake pivot

I have a new campy record 11 on a colnago frame. The rear brake, which is a dual pivot, pivots in on both sides, but when you release it only the right side pivots away from the wheel, the left side doesn't move. Not sure how to adjust that so they both pivot away like the front does. Will be taking it back to the lbs in another 3-4 weeks for the first tune up but would like to fix it myself if thats possible. Thanks in advance
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Old 01-23-11, 09:43 PM
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15mm to center.
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Old 01-23-11, 09:56 PM
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Are you sure the rear is a dual pivot? Many Campy brake sets are dual pivot in front and single pivot in the rear. If it's a single pivot, be sure the center bolt is tight enough and then, as operator said, center it using a 15 mm cone wrench on the flats.
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Old 01-23-11, 09:58 PM
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Originally Posted by operator View Post
15mm to center.
Better reference: https://www.parktool.com/blog/repair-...-brake-service . You'll need a thin 15mm wrench to center the brake.
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Old 01-24-11, 08:55 PM
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I've seen that for 2011, Campy again has an option of a dual pivot rear brake. I have an earlier version of the same brakes (before they went back to single pivots and on to skeletons . . . ) Anyhow, fellow posters are correct about the 15mm cone wrench, but in my experience, while old NR brakes used same 15mm cone wrench, the pivots were part of the brake bolt, while these newer designs turn a nut which held by a 2mm lock screw. If said lock screw holds, fine, if not it merely damages the threads on the brake bolt/axle. However these brakes have a 2mm adjusting screw on the right side arm that is probably better used for centering adjustment.
OTOH, if one arm is absolutely not moving --having nothing to do with centering-- then the nuts holding the brake arms (skeletons?) themselves are too tight. This will make more sense after you look at Campy's exploded views of these brakes.

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Old 01-25-11, 12:45 AM
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Yeah, sounds like the pivot for the left arm is too tight.
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