I r recently bought a mountain bike with disc brakes. Lately I have been trying to adjust the brakes so that there is no squeeking noise (between the pads and the disc), but the brakes work well too. I was told that it is impossible to get perfectly centered. Is this true? If not what should I do to perfectionate by braking system?
it is hard as hell to center your rotor the best thing I do is loosen the bolts that hold the caliper the I hit the brake leverat this point both pads in the brake are compressed against the rotorthen whilr I have the brake lever held down I tighten the bolts ,thus keeping the caliper in place.then just let go of the brake lever and 99% of the time I don't get any rotor drag see while the pads gripped the rotor you fixed the caliper in place.once you release the lever both pads move away from the rotor.try it , it works for me
Hey Your Eminence, The way I get my brakes perfectly centered is by looking at the space between the brake pads and the rotor. I find a area where I can see the space between the rotor and the pads, then I loosen the two brake caliper mounting bolts just enough to adjust and move the caliper, so I can see equal space on both sides of the rotor and pads. Putting a white piece of paper on the other side of the caliper when looking between the pads and rotor helps you see the spacing better. When I see equal space on both sides on the rotor, I carefully tighten the caliper mounting bolts then torque to specs. I have used this eyeball technique successfully for years. Spin your wheel and check to see if your rotor still scrapes. If it still hits in one area of your rotor try and readjust the caliper. If it still hits your rotor could be slightly bent. Now the squeaking when the brakes are applied is not caused by the centering of the Disk brake rotor between the brake pads. Since your brakes still work good, you might have a glaze on the brake pads. Remove your pads and sand them until they are not shiny on the surface then lightly sand both braking surfaces on your rotor. This should stop the squealing when braking. Hope this helps. Kimber
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If you do serious off road riding, disc breaks are great. They have saved my butt a few times, and would not trade them for the world. There will always be a slight noise with discs brakes, it comes with the territory. You can always take a 'playing card' and slip it in between (take it out.) lolbut it will return. You can always take it to you neighborhood shop, but they will tell you the same. I ride a Marin Rift Zone, and that is my baby. Have fun, and make sure if you crash, to check and make sure you dont loose fluid from your brakes! Happy cycling!!!
