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Old 08-04-08, 10:38 AM   #1
HardyWeinberg
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upgrade mech discs?

Hi;

I am fed up w/ a squealing front disc brake. The calipers are Hayes MX2. Not sure where the discs came from. They are thin thin thin, much thinner than the discs on a coworkers Novara Safari, for instance. I can adjust the distance of the inside pad on the caliper, and I can recenter the caliper by loosening it from the fork and retightening it. Cannot adjust the outer pad.

Re the disc, I can see it deflect when I am braking. So is my best upgrade simply to somehow move the caliper inboard a bit so the disc doesn't need to deflect? Or should I get a thicker disc that won't deflect as much? Or should I get a more adjustable caliper?

Thanks in advance...
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Old 08-04-08, 12:07 PM   #2
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http://www.hayesdiscbrake.com/pdf/MX...EnglishWeb.pdf

there is the instructions on how to adjust them ...

if they are squealing you may need to clean the disc surface with some alchohol and scuff the pads up and / or bake them in the oven for a bit ...

the kind of brakes they are, the rotor will deflect some during breaking since only one pad moves and the other is stationary.

but you can adjust the stationary pads location (see above) so it doesnt deflect as much... pads may be worn down also and just need replacing.

if you are just wanting to get rid of them .. pick up some bb7's ... more adjustment options ...
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Old 08-04-08, 01:51 PM   #3
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I had some Hayes MX-2s for a while. You need to adjust the inner pad as close to the rotor as possible with out it rubbing. That will take out most of deflection and make for a better grabbing brake.
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Old 08-05-08, 09:56 AM   #4
HardyWeinberg
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I just ordered a bb7, I think I've tweaked everything that can be tweaked (cleaned disc, cleaned pads, scuffed pads, replaced pads, cleaned and scuffed replacement pads...) The rear Hayes doesn't squeal, I don't know why. Actually I have not baked anything. And the last thing I haven't done is reface the caliper attachment, not that I have the tool. I'm not sure what other variables there are.
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Old 08-05-08, 10:56 PM   #5
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You'll be happy with BB7s. My friend got a set and he loved them. They are very easy to adjust, all tool free. And they have excellent stopping power.
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Old 08-06-08, 05:38 PM   #6
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I love my bb7
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