Mountain Biking - Not brake squeal, brake grind?
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11-25-04, 04:25 PM
I'm not sure if my v-brakes on my '04 Mt. Fuji are working right. They make a grinding noise, like the pads are made out of sandpaper. It's the kind of noise I'd expect with mud in them, but it happens when the bike is clean. It seems like it becomes worse the longer I have to use them to stop. The best word I could use to describe the noise is "Shhhshhshshhhh". I've read stuff about brake squeal, and adjusting breaks, but nothing has described this noise. I just want to make sure it's not actually grinding on my wheel rim.
11-25-04, 04:41 PM
take off the pads and make sure there are no rocks/dirt in the grooves of them... always worth a shot :)
11-25-04, 07:38 PM
could be something caught inside the rubber of the pads, fine dirt particles wedge their way in there
11-25-04, 10:16 PM
Well, there doesn't seem to be any noticeable dirt in the pads. I don't know how they are really supposed to feel. They feel like rubber I guess. My other bike didn't seem to make the same noise, except when I've gone down a really long hill, and then less than this one. Not sure what to think.
11-25-04, 11:25 PM
My rims and pads sometimes get glazed over due to heavy/dirty use. A good cleaning and maybe some fine grit sandpaper usually fixes it for me. I've got Mavic rims and XTR V-brakes, btw.
happened to my friend's brakes under wet/muddy conditions. his pads started melting quicker too. not sure there's much you can do, other than cleaning your rims and maybe try new pads designed for a different condition.
11-26-04, 12:15 AM
Fine grit sandpaper on the pads, but not rims? I can't see how using sandpaper on the rims could be a good thing. How do I clean my rims?
11-26-04, 01:01 AM
Well, I take the tire off the rim and scrub(scouring pad or somethin') with some hot, soapy water, dry it off and see if there's any residue left on it. Maybe hit it with the sandpaper if there's some really stubborn stuff on there. I need to clean the wheelset on my hardtail, but I'm afraid the tires won't survive being taken off cuz they're so old LOL.
I don't see any harm coming from cleaning the rim with rubbing alchol or methylated spirits.
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