Humming Discs

[Yammer]

Ok disc brakes are cool, but mine are really annoying. As I ride I get a hum from the front wheel becaus ethe pad is sometimes rubbing and vibrating just right. It really sucks, sounds cheap and distracts me from riding. Is there any way to get rid of this?

Patrick

[redheat86]

sorry if im hijacking the thread..just have things to add as well since its on the same topic.

i do get the same or similar issues from mine as well.. there mechanical..but i get a scraping sound from the rear of mine ever since i changed the tube.

and when do you replace pads?

[Standard]

well, it's pretty much a given to get the occaisional noise from disc brakes. Normal clearance between the pad and rotor is .5mm. There's more than enough flex on a normal XC bike with QR's to allow that... hell, even on my DH bike with 20mm front axle and 12x150mm through axle on the rear I get the occasional rubbing.

What kinda disc brakes do you have?

[mtnbykr]

Ok disc brakes are cool, but mine are really annoying. As I ride I get a hum from the front wheel becaus ethe pad is sometimes rubbing and vibrating just right. It really sucks, sounds cheap and distracts me from riding. Is there any way to get rid of this?

Patrick
try sanding the pads w/ snadpaper and wash the rotor w/ rubbing alcohol. but it is the nature of the beast...

kl

[mtnbykr]

sorry if im hijacking the thread..just have things to add as well since its on the same topic.

i do get the same or similar issues from mine as well.. there mechanical..but i get a scraping sound from the rear of mine ever since i changed the tube.

and when do you replace pads?
check your wheel and make sure it's straight in the dropouts. replace pads when they're worn out... ;?)

kl

[Yammer]

I've got 6" Hayes brakes. Has anyone triedto use the anti-squeal stuff like you do on automotive pads?

Patrick

[jjrsds]

The anti squeal is for the back of the pads and helps to reduce virbation between the caliper and the pad I don't see the need for it on a bicycle. Sounds like you might have an alignment problem, wheel a little off center or the caliper not adjusted correctly.

[soupboy]

...try this.


Make sure your wheel is square in the drop outs and the QR tensioned properly.
Loosen the bolts the mount your caliper to your Hayes IS adapter just enough so that it can move freely. Make sure your bolts holding your adapter to the drop out are snugged to spec.
Squeeze your brake lever - you may need a helper - and while the lever is pressed in re-tighten the caliper mounting bolts.
Release the lever and take 'er for a spin to see if it now spins cleanly.
Also, you may want to find a shop with a Magura disc tab facing tool and have both your fork and frame tabs faced. It's not uncommon for paint or powdercoating to oh so slightly skew the trueness of the tab face.

While unavoidable, a lot of this stuff can be greatly minimized with proper set up on the front end.

Erik's in SLP (Mike N) has done this on a few of my bikes. Oh so drag free.

Sean

[Yammer]

Man that is really good advice. Thanks!

Patrick

...try this.


Sean

[nigel]

Old thread on similar thing,

http://www.morcmtb.org/forums/showthread.php?t=11271&highlight=hayes

or this one,

http://www.morcmtb.org/forums/showthread.php?t=11516&highlight=hayes