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Dura Ace rearbrake makes noice(4 posts)

Dura Ace rearbrake makes noiceHans van Beek
Aug 23, 2001 7:16 AM
My Dura Ace rearbrake (1996) on my secondhand Giant TCR makes noise when I brake. The brake unlocks because of the trembling while I am riding. (Blocks are coming from the rim. The button is coming up)

The corner of the brakeblock on the rim is not adjustable like on my XT-brakes on my mountainbike.

The distance between the brakeblock and the rim is more at the front of the brakeblock than at the rearside of the brakeblock. I thought this should be just the opposit or at least parrallel.

Questions:
-Does someone have similar experiences with Dura Ace brakes
-Is it possible that the brakes are bended in the time
-Does someone know how to adjust the brakes that the noise and the trembling dissepear

Excuse me for my bad english !

Hans van Beek
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re: Dura Ace rearbrake makes noiceLone Gunman
Aug 23, 2001 7:53 AM
The brake rubber block should toe in at the front, not the rear as you have described. Since there is some wear of the brack block rubber, try putting a new block in and check the front clearance distance is LESS than the rear. At this point you can tell if your brake caliper is "toed" correctly. If not, if you are not knowledgeable to the repair needed, have a shop make the correction.
re: Dura Ace rearbrake makes noiceHans van Beek
Aug 23, 2001 10:48 AM
The problem is that even the brakeshoe doesn't have the toe-in, so I cannot solve it with new blocks. SO I think the brakearm is bended so that the brakeshoe and the rubber block are not toe-in anymore.
re: Dura Ace rearbrake makes noiceLone Gunman
Aug 23, 2001 11:27 AM
Exactly! I purposely did not give you the fix solution. What the shop will probably do is grip the arm of the caliper and twist it so that the front of the pad is toe inward. This is a small correction and can be delicate which is why I said if you don't have the knowledge for the repair take it to the shop, as opposed to over correcting and possibly damaging the arm beyond repair by doing the repair yourself.