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-   -   are disc bakes supposed to squeak (http://www.bikeforums.net/commuting/873535-disc-bakes-supposed-squeak.html)

BassNotBass 02-19-13 04:11 PM

Mine don't even squeal in the wet but then I clean the rotors and pads every few weeks if the weather has been wet and road grime starts coating the bike. I use a clean shop towel wetted with acetone to clean rotor and pad surfaces... it removes contaminants that denatured alcohol can't touch.

jared@WKYC 02-19-13 04:33 PM

Some times yes, sometimes no. I've had high end brakes that squeaked, and cheap ones that didn't. Add in water and dust, and you might or might not get squeaking.

dynaryder 02-19-13 05:50 PM

Quote:

Originally Posted by Stix Zadinia (Post 15289731)
Not sure if the disc became that way from some bump, or if it happened just out of 'normal' wear.

The only way for a rotor to get warped is to take a hit from something. And it shouldn't have taken long to tweak it back. I've used an adjustable wrench to true a rotor that took a hit at a polo match and it only took about a minute. Again,for some reason many mechanics don't seem to know what to do with discs.

dynaryder 02-19-13 05:54 PM

Quote:

Originally Posted by wobbooze (Post 15290001)
this is how to kep them from squeeking and will spin silently with no energy loss.
1. loosen the two screws on the rotor thing a bit
2. squeeze the brake of whichever brake is making the noise
3. while squeezing said brake, screw the screws back in
4. it should be silent now

Two screws on the rotor thing?:wtf: You mean the bolts on the caliper mount? What you're suggesting is for centering hydros,and is NOT the method used for cable discs. After the initial installation of the caliper,cable discs have their pads adjusted manually.

windhchaser 02-19-13 05:58 PM

o mine there is 2 bolts on the caliper and the caliper can be adjusted by loosening them to make sure the pads hit the router flush.mine are adjusted real good. i am not sure how close the pads should be to rotor so i adjusted em to they touched and backed em back a bit. i hope i was able to make my self clear i suck at explaining my self

Wil Davis 02-19-13 06:09 PM

[JOKE]
ůsounds like they might need need oiling!

[/JOKE]

- Wil

Burton 02-19-13 06:26 PM

Oooooooops! Guess that's something they forgot to mention in the specs.

Best QUIET wet weather performance is still XTR parallel push V-brakes. But they were discontinued because of all the percieved hype about disc brakes. :innocent:

krobinson103 02-19-13 07:06 PM

Having both v and disc brakes I agree. Even cheap vs with coolstops are almost as good as discs and are effective yet quiet in the rain. Not as good as discs, but pretty close. Of course if your wheel gets out of true and you need to ride home discs win... been there done that.

manapua_man 02-19-13 11:00 PM

I've got BB5s on my paratrooper, they only squeal (and really not that much) if I really apply them hard (and suddenly) when they're wet. If I'm gonna slow down I usually just apply em a little to get most of the water off and then use as I normally would, just to avoid some squeaking. I'm pretty happy running only disc brakes (this is one of the older ones that had front disc only originally) and would continue to use them in the future.

dynaryder 02-20-13 06:38 PM

Quote:

Originally Posted by windhchaser (Post 15293218)
o mine there is 2 bolts on the caliper and the caliper can be adjusted by loosening them to make sure the pads hit the router flush.

You mean two bolts on the caliper mount? For the initial setup,you adjust the caliper so the disc is dead center on calipers with dual pad adjustment,or biased closer to the outer pad if only the inner pad adjusts. After the caliper is set,you shouldn't have to play with the mount unless it loosens for some reason. All your adjustments should be with the pad adjusters and cable.

Quote:

Originally Posted by windhchaser (Post 15293218)
i am not sure how close the pads should be to rotor so i adjusted em to they touched and backed em back a bit.

Yep,that's how it's done.


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