Disc brake problems
 

HI!~

i just got my bike like a week ago and i noticed a annoying sound that the front disc makes when the wheel is turned and ask the LBS guy and he said that it was because of it being new and it needs to get used to so he suggested to try riding the bike while holding down the breaks slightly.

but instead of it improving, now i think its gotten worse and the noise is really really loud now..pissing me off and all the people i ride pass are like staring at me...XD

what do you guys think is the problem?

what kind of brakes are they? I've been working on my Avid Juicy Sevens and I've managed to get them just right. Your pads shouldn't be rubbing against the rotors without applying the brakes. From my own experience, breaking in pads only solve 2 things:

1) Loud squeaking noises WHEN you apply brakes
2) Increased braking power

So I think you need to get your brake pad clearance adjusted again.

LOL i know whats like I had the same problem;P

If you take that front axle spinnymijigger pole in the wheel and turn the knob at the other and and re spin it a different way, it might cause the rotor to even out a little.

Wow, this tech-speak stuff goes right over my head :D.

Pad rub/noise is common with new pads. It goes away after a brief period of normal use. If the noise is getting worse, as in your case, some adjustments may be in order. Start by telling us what kind of brakes you have.

The guy that told you this is an idiot. Don't do it. And if you were doing it, it may be the source of your current problems...

serious? why...

huh?

They're either Tektro or Promax, from the sound of it. All brakes need to be broken in properly, but if they're cheap, the tolerances aren't tight and square enough to stop them from squealing.

the brakes are stock from my yukon.

ummm Shimano Deore BR-M495 Mechanical Discs

i had a look at the rotor and im not sure if they're rubbing against each other because its really hard to see.

If your turning while going fast does it make the noise really well?

I'd remove them, clean all the mounting surface of paint and dirt, reinstall and scuff the pads. But your shop should do that for you.

hmmm, had a look at the rotor again with a torch this time and found that there was also or no clearance between the disc and the left side of the rotor, since i dont know these things too well, is this normal?

You should have at least room for a business card between your rotor and inboard pad.

by inboard pad, do you mean the side closer to the disc or the one futher from it?

i tried the business card and doesnt fit the one closest to the disc but does the other way.XD

inboard is closest to the wheel (or right) - outboard would be closest to a guy standing on the left side of your bike.

Left and right for bicycles, like cars, is always from the driver's position. So the right pad, which is inside, is the one that needs to be moved. Since it's a mechanical brake, you need to adjust the pad out, or move the caliper over. The pad should have some adjustment to it.

yeah, the card fits.

denatured alcohol, where do you think i can get that?

Rubbing alcohol - same stuff you may have around to clean off cuts/scrapes (at least that's why my wife had some - for the kids). If not, a pharmacy/drug store should have some - don't know what you have down there.

Try your local chemist.

had a problem like this with somebodys bike at work. there was something stuck in the caliper so check the pads, caliper, and disc for any debris! if it still persists check the pads are alligned properly etc.

Well, you learn something new every day. I apologize for the bad gouge.