What to do if the rear brake always can t be pinched when it s cold on a Giant mountain bike

When it is cold, the rear brake of the Giant mountain bike is always pinched, probably due to frost freezing at the caliper shaft of the rear brake, which causes the brake feel to become tighter. Here are some solutions you can try:

Put the bike indoors, wait for the frost to melt, and then try pinching the brake handlebars a few times before riding. This will cause the moisture at the shaft of the caliper to evaporate, and the brake feel will become loose.

If the above methods don't work, you can try replacing the brake line. Because of long-term exposure to air, the brake wiring pipe may rust, causing the brake feel to become tighter.

If the problem persists after replacing the brake wiring tube, consider adding lubrication or butter to the brake handlebar, which can also help loosen the brake feel. However, it should be noted that adding lubricating oil or butter does not fundamentally solve the problem, if you want to completely solve the problem, it is recommended to use a tool to disassemble the line pipe and then clean it.

If none of the above methods can solve the problem, it is recommended to contact the after-sales service department of Giant Mountain Bike for professional advice and help.

This problem is actually very easy to solve, first of all, according to the age of the car, check whether the brake line pipe and the brake are rusty, and then look at whether it is a V brake or a disc brake, the V brake should rarely appear in the situation you said, only the disc brake will have a similar feel to the situation that is very tight, there are two solutions, the best one is to replace the brake line pipe, the other is to refuel, add lubricating oil, or butter, but if you want to solve it thoroughly, it is best to use tools to disassemble the wire pipe, and then clean it up, Here's a rough brake tuning** for you to see.

Line discs? Clean up the wire pipe. Add some oil.

All the disc brake discs should be run in order to increase the friction area between them And the surface of the new brake pads is very rough, and the brake disc needs to grind him smooth, so as to ensure that there is no gap between the brake pads and the brake disc If the run-in is good, it will effectively shorten the braking distance and the brakes will be very comfortable Neither soft nor hard.

Here's a way to run in about 20 yards and then gently use your front and rear brakes at the same time until it comes to a complete stop Repeat more than 10 times so that your brakes have more than 80 braking power and the remaining 20 braking power can be gained in daily riding.

Try not to lock up during the run-in period, if there is still a sound after the run-in, it is that the brake pads are not parallel to the disc and need to be reinstalled.

The motorcycle I bought, the owner of the car shop also said that it was running-in, and my friend also said yes.

There are articles on the Internet that are dedicated to oiling mountain bikes, as well as tips for maintaining mountain bikes, you can search for them, and then there is, the frame is alloyed, and the rust is relatively slow, so it is best not to wash it directly with water, and wipe it with a damp cloth.

It may be that the disc is oily or something, it is recommended to clean it with a detergent, or it may be that the disc is deformed or there is a problem with the tablet.

The disc was stained with oil, and it was removed with detergent.

Let's go to the car shop, it doesn't make much sense here.

Causes and maintenance methods of the rear wheel swing of mountain bikes:

1. Rear wheel deflection caused by uneven tension of rear wheel spokes. Maintenance method: Find the place where it swings, if it is like swinging on the right side, use a spoke wrench to tighten the spoke on the left side of the hub.

2. Rear wheel deflection caused by damage to the rear wheel bearing. Maintenance method: Replace the damaged bearing of the rear wheel.

3. The rear wheel deflection caused by the installation displacement of the rear wheel. Maintenance method: Reinstall the rear wheel to the correct position and lock it.

The quick release removes the rear wheel. Tighten the rear hinge and you're good to go. The balls in the rear hinge are a little worn out.

Is it a disc brake, see if the rear wheel caliper is rubbing the disc, clamp the disc, and adjust it. Let's see if the chain has fallen. Thank you for adopting.

Your brakes are turned and the wheels are locked. Just set the brakes right.

It should be that the brake line of the brake is too tight, and it can be loosened a little.

The rear wheel pendulum is divided into the following types, please observe carefully, one is the tire pendulum, under normal circumstances, this low-end tire is pendulum, no solution.

The second is the rim pendulum, the normal rim is placed below 1mm is considered normal, don't care. Over 1mm have to go to the car shop flat circle, the speed swing I don't know if you are talking about the rear derailleur or flywheel, but these two are normal to have a deflection when the wheel moves, if you don't worry, go to the car shop to check.

It is recommended to go to the car shop for a check.

What is the rear shift swing? The screws are not tightened? Tail hook wobbling?

Normal cars will be like this, you can push this to the car shop to adjust.

First of all, the ** you posted is the shift line of the mountain bike front shift front derailleur, and I think this is the case with the problem that your brake line is not exposed.

1.In order for the brake line to reduce drag, exposure is a must, because it reduces the resistance between the brake line and the brake line.

2.If you don't want to be exposed, you can buy the kind of brake line dust protection sleeve sleeve on the exposed brake line 3If it is a disc brake, you can choose to install a hydraulic disc brake, in which case the brake line pipe will be replaced by the oil pipe, and the oil pipe is not exposed.

4.As long as the line pulls the brake, whether it is a V brake or a disc brake, the brake line will be more or less exposed, which is the frame reserved for the wiring, and there is no way to change it.

Only BMW's frame can be routed inside, and domestic factories can only route outside, hehe, this is technology!

Don't let others fool on the first floor, and then fool people, the inner wiring is a technology in the 7 and 80s of the last century, which has long been eliminated, and many cars have internal wiring, and it is not only BMW can do. The second floor is right, the resistance is high, the speed change is not accurate, and there is no such thing as a professional car. Be a man with self-confidence, it's not an honorable thing to look down on yourself, you are a bicycle idiot and a stupid fork on the first floor.

Many of the wire-pull brake cables are now no longer exposed. The exposed brake line is easy to get water and rust, and it is difficult to maintain. The original design intention of "reducing resistance" did not materialize.

Hydraulic rim brakes and hydraulic disc brakes are not exposed.

If you need to take the inner line, it can be retrofitted. Drilling holes for the frame, walking the inner line, and wire-pull brakes are easy to do, while hydraulic rim brakes and disc brakes need to be refilled and even replaced with oil pipes, which is very troublesome.

Take it to the store and turn it around. Maybe it's rubbing. If it's a problem with the shifting, don't do it yourself, just let Giant's after-sales service fine-tune it, it's not a big problem, don't worry.

I guess the one in front of me came into contact with the chain.

Just take a closer look.