MTB 11 ATX770V brake problem

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According to your description, it should be possible to rule out the cause of the abnormal noise caused by rain or sediment, but it is also possible that this is the cause: "abnormal rim due to bearing hub damage".

First of all you can check the situation:

1.Look at the wear and tear of your old brake pads, if it's thick on one side and thin on the other.

2.The expression of the hub is that if you shake the outer tire by hand, you can feel that the hub has a space to shake from side to side.

3.The performance of the rim is that somewhere in the rim is sharpened a little bit.

If one of the above three situations occurs, it is "rim abnormality caused by bearing hub damage", and the uneven force of the V-brake caliper somewhere in the rim causes shaking and rattling, (because the thickness of the left and right sides of the old brake pad has been nearly worn to adapt to the slightly deformed rim, so there will be no shaking and rattling.) ）

It can be handled in the above cases

This is related to the brake skin, you can go to a new brake, or change a set of disc brakes, better than the V brake to adjust the maintenance, not expensive, BB5 230, BB7 380, you can see, these two are very good, it is recommended that the latter, it is very convenient to adjust.

The spacing between the brake pad and the rim, if the spacing is different, it is adjusted by the brake screw, and the rim is cleaned, and most of the problems of the V brake can be solved in this way.

I rode the 770, the problem with the sound is that the contact angle between the brake pad and the rim is not too good, a slight transfer point should be about the same, my car also has this problem, trembling is a bit cage of the rim, find a mechanic to tune the 770 can be dowry disc brakes, but I don't feel that necessary.

Mine is also ATX770, there is also a sound, disassemble it and find that there is a wire in the brake pad, just change it to a silent brake pad.

Flowers, grass, and everything have to be watered.

Summary. 1.Adjust the handlebar:

Adjust the grip distance of the handlebar to make it comfortable for easy handling. 2.Brake lever:

Adjust the brake lever so that it connects to the handlebar post for easy operation. 3.Adjust the brake cord:

Adjust the brake cord so that it fits snugly against the handlebar posts. 4.Adjust the brakes:

Adjust the brakes so that they are close to the brake disc so that it is suitable for operation. 5.Adjust the brake disc:

Adjust the brake disc so that it is close to the handlebar post for easy operation.

You've done a great job! Can you elaborate on that?

1.Adjust the handlebar: Adjust the distance between the handlebars to make it comfortable for easy handling.

2.Brake lever: Adjust the brake lever so that it is connected to the handlebar post for easy operation.

3.Adjust the brake cord: Adjust the brake cord so that it fits snugly against the handlebar column.

4.Adjust the brakes: Adjust the brakes so that they are close to the brake disc to make it suitable for operation.

5.Adjust the brake disc: Adjust the brake disc so that it is close to the handlebar post for easy operation.