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Regardless of whether your bike is rim or disc, there is no need to put up with the squeak of the brakes. The following are some causes of abnormal noise in the bicycle brake system and some suggestions for dealing with them.
Brake squeaks are usually one of the most common squeaks heard while riding. In addition to the bad feeling in the ears, this also shows that the performance of the bike brake parts is not good. The combination of different brake surfaces and brake pads will affect the abnormal sound produced by the brake, some will make noise and some will not. There are actually many reasons for the abnormal noise. Generally, there are three situations: your brake pads, brake discs, and rims are stained with grease (oil); the brake surface and the brake pads are not in a straight line; new The brake pads I bought were not adjusted to the best position. While stains are one cause, vibration is another, and it means your brake pads aren't properly seated.
(1) Wheel brake
The first thing you need to do is to make sure the bike brake caliper parts, brake surfaces, bike brake cylinder and pads are clean and the braking performance is good. Of course, also check that all bolts are locked. Because any part of the looseness will cause unnecessary abnormal sound of the bicycle brake system. Of course, abnormal noise is often caused by stains. Because of the wet weather, chain oil can easily rub into stains in puddles. So make sure the rims are clean and wipe off any excess chain oil from the chain first. There are many such specialized degreasers on the market, you can go and buy some back.
When the brake pads fail or wear due to unevenness, it is easy to produce abnormal brake noises. In this case, clean out the small grit remaining inside, and then smooth the surface with sandpaper or a thin file. Brake pads worn out? Then replace it. Most brake pads have wear indicators. However, in most cases, the unevenness of the brake pads is usually due to the fact that they were not installed in place when they were initially installed. While checking the brake pads, also pay attention to the rims. Many aluminum rims have a machined surface to ensure good braking performance. So if you have a lot of dirt on your rims or a worn rim can be detrimental to braking performance, so clean your rims from time to time.
If cleaning still doesn't solve the abnormal brake noise, it is likely that the vibration caused by the brake pads is not installed properly. If your brakes are juddering and making a lot of noise, your pads aren't mating well to the rim or rotor. Try the brakes and look at your brake surfaces. Without letting go of the brakes, tighten the bolts on them. If necessary, you will need to readjust the pads or disc brakes to ensure the correct connection.
(2) Disc brake
The abnormal noise of disc brakes and the abnormal noise of wheel brakes are actually similar. Basically, it is caused by dirty pads or brakes. That's why the bike must be oiled carefully. Regularly cleaning your rotors or rims is a great way to eliminate brake squeal. You can use sandpaper or other thin paper to clean the dirt on the pad, of course, if the lubricant has penetrated your pad, then you'd better get a new one. Do not apply degreasers or chemicals to the pads.
First, you need to make sure that all bicycle brake accessories and braking surfaces are clean. You can buy a good disc brake cleaner, or sometimes an instant fix. Or another method is to use a coarse cloth with a little high-purity isopropyl alcohol and clean the discs. Of course it is easier to remove it for cleaning. Disc brakes also get dirty easily. Unlike rim brake pads, if it gets dirty, it needs to be cleaned up, but it is more troublesome because you need to remove it completely from the bike first. Of course, sometimes if the situation is not too serious, you can simply use sandpaper to scrape off the surface dirt, but if the disc is really dirty, you need to buy a new pad.
The installation process of disc brakes and rim brakes is completely different, so the installation process of new pads must be careful and correct. Because the improper installation method and position will greatly affect the braking performance. The best way to secure the pads is to drive down the road at low speed and hold the brakes. Repeat this step a few times to make sure it fits in place.