|   Help w/ Squealing front Avid mechanical disc | Jim Potter
Jan 3, 2004 11:45 PM | | I have limited disc brake experience, so I've gone back and read lots of posts about the somewhat lengthy break-in period for Avid mechanicals, and I anxiously await the day of that awakening. In the mean time, however, I'm getting quite a bit of squealing from the front brake, and am wondering if this will go away when the brake decides it's settled in, or if it's a trait of Avid mechanical discs. The rear is nice and quiet, however.......
I'm using XTR v-brake levers in maximum pull mode, and new XTR rotors. The skinnier brake track on the rotor shouldn't be an issue, as the eight spokes of the rotor seem to be wearing the pads evenly with the parts of the pads contacting the actual brake track. The inner pad is set as close as possible without rubbing. Does this brake require a bit of drag from that inner pad? I hope not. What about aftermarket pads? Any that are known to be quiet?
Thanks in advance for any and all help. I really want to like these things, help me like these things!
--Jim |
| Does not require the inner pad to drag | shiggy©®
Jan 3, 2004 11:59 PM | | If you are running the inner pad so it drags a bit (and have used the brake for 10-20 miles to bed in) to increase power you may need to set your lever for more leverage/less cable pull.
I would also go back to Avid rotors. You are losing braking power if the whole pad is not on the rotor (the spokes do not count). It could be contributing to the squealing, too. Other pads can help but usually they just squeal under different conditions. Mine still make noise once in a while for no rhyme or reason and then it goes away. |
| Does not require the inner pad to drag | Jim Potter
Jan 4, 2004 11:26 AM | | Thanks for the advice, I'll try reducing the cable pull and see what happens. As far as rotors go, I'm gonna have to keep the XTR since I'm using XTR hubs, and wouldn't think of using anything else (I have strong convictions for well adjusted angular contact ball bearing hubs. Call me sentimental). Ultimately it would be best if Avid liscences the center lock rotor from Shimano and made their own with their nice, fat brake track. Although not the reason I chose XTR hubs, that center lock design of Shimano's is quite elegent and makes more sence to me than Int'l standard six bolt. I'm not always a Shimano booster, but that design is nifty.
I wonder if the brake track on the '04 XT rotor is any wider? Not that it matters much, power doesn't seem to be a big issue. These things are already starting to show signs of good stopping power, and they don't have many miles under them yet.
I suppose I can get over it if they sound off only every once in a while, I just don't want to hear them all the time. I hate noisy bikes.--Jim |
| See Mike T's post below | shiggy©®
Jan 5, 2004 1:44 PM | | I could be the rotors. |
| I once cured............. | Mike T.
Jan 4, 2004 3:03 AM | | .....an anoying squeal by switching the make of the rotor. |
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