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Rubbing rotor noise after rain

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Rubbing rotor noise after rain

Old 07-28-21, 06:59 AM
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Rubbing rotor noise after rain

Frequently after I ride in wet weather or with wet roads I start getting faint rubbing type noises that seem like they are minor debris or dirt by the brake rotors. The only way I've found to clean effectively is removing the wheels and giving a thorough cleaning. Are there any simpler ways? Do others have this issue?
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Old 07-28-21, 10:41 AM
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I employ a very simple solution - I do nothing and it almost always goes away on its own.
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Old 07-28-21, 11:34 AM
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You might need new pads. Worn pads aren't smooth, and will have pits and grooves that collect dirt which then rubs and makes noise (but comes off with a little braking). This will wear the rotors.
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Old 07-28-21, 05:44 PM
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Fair enough. I just hate noises. I’ll just have to try to ignore.
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Old 07-29-21, 07:13 AM
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Originally Posted by kosmo886 View Post
Fair enough. I just hate noises. Ill just have to try to ignore.
How persistent is the noise? If it's lasting in to the next ride and longer, you may have fouled pads.
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Old 07-29-21, 04:56 PM
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Solution: rim brakes.
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Old 07-29-21, 06:29 PM
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Originally Posted by kosmo886 View Post
Frequently after I ride in wet weather or with wet roads I start getting faint rubbing type noises that seem like they are minor debris or dirt by the brake rotors. The only way I've found to clean effectively is removing the wheels and giving a thorough cleaning. Are there any simpler ways? Do others have this issue?
Happens to our cars, too. Disc brakes self-adjust to fairly tight clearances between the rotor and pads, and steel expands where it rusts. So that clearance goes away until the surface rust wears off.
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Old 07-30-21, 10:10 AM
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Originally Posted by Kimmo View Post
Solution: rim brakes.
Well, disc brake rotors have advantages as sound transducers over wheel rims. The rims are heavier and damped by tires and tubes, while the disc rotors are metal rings that are mostly spinning freely through the air and fastened at a few points.

Otto
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Old 07-30-21, 06:17 PM
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Originally Posted by ofajen View Post
Well, disc brake rotors have advantages as sound transducers over wheel rims. The rims are heavier and damped by tires and tubes, while the disc rotors are metal rings that are mostly spinning freely through the air and fastened at a few points.

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Completely irrelevant, since rim brakes barely ever rub.
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Old 07-30-21, 06:29 PM
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Originally Posted by ofajen View Post
Well, disc brake rotors have advantages as sound transducers over wheel rims. The rims are heavier and damped by tires and tubes, while the disc rotors are metal rings that are mostly spinning freely through the air and fastened at a few points.

Otto
Ignore him or it'll eventually drive the thread in to a morass of Big Bike Marketing rants with the occasional detour on the evils of cartridge bearings.
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Old 07-30-21, 10:01 PM
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Originally Posted by WhyFi View Post
Big Bike Marketing rants
I think one or two folks might have misconstrued my digression into hating on capitalism as some kind of retrogrouch manifesto, but it ain't so. Innovation is a fine thing when it improves the breed, but given that the fundamental purpose of any publically listed company is to turn talent and raw materials into profits, any actual improvement is incidental.

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Old 07-31-21, 02:38 AM
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Welcome to disc brakes.
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Old 07-31-21, 06:07 PM
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Maybe one of these days road discs will get servowave and some pad clearance.
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