Mountain bike repair, how to repair a bike?

Everyone is right, can only be replaced, fortunately the cost of replacement is not high, the flywheel is 30-50 yuan, you said that the end of the shelf of the fixed gear is aluminum, just change a hook, 5 yuan a. If you are a novice, you can go to the giant store to repair, you have incomplete tools at home, it is not easy to repair. Finally, I wish you a speedy repair.

I changed it once, and it was OK at the time, but I didn't go far before I got stuck, and the whole rear derailleur went into the rear wheel bar, and I couldn't move back and forth on the road! Go to pieces! Carry it all the way to the pits!

I guess in your situation, don't compete with him. After dialing to that extent, it is estimated that it will have to be used for about 5 years, and the performance of the whole vehicle will not be much better, repair this today, repair that tomorrow, if possible, it is best to change one, and you can enjoy a certain after-sales service.

It turned out to be a collision, and the money was not much, there were more than a dozen yuan (not the original), and there were dozens (better). It is recommended to use the standard accessories of the original factory! Otherwise, it may not be easy to use after spending money!

It's hopeless...

Change a rear transmission, ****200-400 are very easy to change, I personally recommend going to the store to let professionals help you change, save trouble.

If you change it yourself, just adjusting the time it takes can make you collapse.

It's not expensive, it's a few tens of dollars, but if you change it yourself, it's a difficult action.

Change to the place where the bicycle is repaired.

1 The adjustment method of the ordinary front brake is as follows: loosen the brake nut with a wrench, lift the front brake fork and the front pull tube up with the left hand, so that the distance from the brake skin to the rim is only 1 mm, and then use the right hand to pull the short pull rod on the handlebar down, make the short pull rod and the front pull pipe in a straight line, tighten the brake nut, and after letting go of the left hand, the brake skin will drop 1-2 mm, so that the brake skin is about 3 mm away from the rim. 2 4 The adjustment method of the ordinary rear brake is:

First loosen the clamping nut under the frame, then tighten the adjusting nut, adjust the brake skin to about 3 mm from the rim, tighten the clamp nut, if the brake is too close to the rim, adjust in the opposite direction. If the ram, short tie rod, rear pull pipe and other parts are loose, or the tension angle of the rear crank spring is too large, and the elasticity is small, you can tighten the loose brake screw, lift the rear pull tube up with the left hand, so that the brake skin is close to the rim, and then use the right hand to pull down the short pull rod of the handlebar, so that the short pull rod and the rear pull pipe form a straight line, and then tighten the brake screw, when the rear crutch spring is loose, and can not be adjusted up when the rear pull pipe, you can tighten the nut on the long pull rod joint, pull the back crank forward, make the rear brake skin, the rear brake fork move forward, and press the rear crank spring at the same time, Finally, tighten the nut on the long tie rod joint.

When braking, the contact area between the brake pad and the rim on one side is large, and the contact area between the brake pad and the rim on the other side is small. The reasons for this failure are: (1) The front wheel or rear wheel is not aligned, the front wheel or rear wheel should be aligned, so that the distance between the front rim and the left and right fork legs is equal, so that the rear rim.

The distance between the left and right flat fork legs is equal; (2) If there is axial flutter in the rim, the axial flutter of the rim should be eliminated; (3) When the ram is misaligned, the screws on the splint should be loosened, the ram should be straightened, and the screws should be tightened; (4) If the fork is deformed, you can use a wire cutter to clamp the brake and turn to correct the deformed fork. If the brake skin is facing outward, the brake fork can be pulled inward; On the contrary, pull outward, and then adjust the position of the ram to make the left and right brake skin symmetrical. 4 43 When braking, the brake pad touches the rim one after the other and causes this failure and the way to overcome it is:

1) If the fork is not corrected, when the front fork is installed, the screws of the brake screws and the screws of the ram should be tightened, and the ram and the front fork should be straightened, and then the screws should be tightened. When the rear brake fork is straightened, the splint screw should be loosened, the brake fork should be straightened, if it is still not possible, the nut on the rear crank plate should be loosened, the rear crank plate should be rotated, and the rear crank should be straightened; (2) If the brake fork is deformed, the brake fork should be corrected, if the brake skin on the right side of the brake fork first touches the rim, the straight part of the brake skin can be pulled down to make the brake skin leave the rim, or the left straight part is pulled upwards to make the brake skin close to the rim; Conversely, the pull is in the opposite direction.

Very good repair, the chain is wiped with oil, the car is often wiped with a rag, and the screws are often checked and tightened

You can fix it yourself, and you can buy a car repair tool online.

Fix the bike. On the way, my bike was punctured, and it took me most of the day to find a place to fix it. The repair shop is in a relatively remote alley, and the car repair master is also in his 60s and is a little dirty.

When he saw the bike I was pushing, he could see at a glance the performance, quality and price point of the bike. Since I complained that it was inconvenient to repair the bike now, he suggested that I buy a Giant bike. I laughed and told him:

The previous Giant bike was just lost".

He's the most dedicated mechanic I've ever met. When repairing the tire, he carefully rubbed the inner tube evenly with a file, then applied glue, glued the tire patch after the glue partially condensed, and then used a small hammer to gently knock on the tire patch around it. In the past, the master only had these steps in the tire repair process, and I thought that his tire repair process would be completed after he was relieved.

Who knew that he touched the inside of the tire with his fingers, and found no problems before installing the tire and pumping up; I looked around the outer tire of the bicycle again, and made sure that I didn't find any foreign objects left on the outer tire, and then told Nogo to tell me that the car was repaired.

Seeing that he had finished repairing the car, I sincerely asked him for advice for a while. After chatting, I learned that he is now 65 years old and has been repairing bicycles for more than 30 years; Even though many of his peers quit, he still persevered. I actually wanted to know why he had persevered until now, but looking at his wife, I guessed part of the reason.

When I was a child, bicycles were common, and bicycle repair shops were everywhere; However, there was a problem with the family's bicycle, such as a flat tire, and it was all my father who temporarily found tools to repair it. In the past, when the tire was punctured, there was no special tire patch, so a small disc had to be cut from the worn inner tube, and then rubbed on the tire patch and inner tube with a file before gluing it on. When I was in junior high school, I started to fix problems with my bike myself.

In the past, it was only two dimes and three dollars to repair the tire, although now it costs five yuan to repair the tire, but there are fewer people who use bicycles and the replacement of solid tires, and there are fewer and fewer people who repair bicycles.

In addition to the bicycle repair masters, I also met many dedicated and professional people. When I think of them, I feel a sense of awe in my heart. When I was working in the notary office, I met a notary business expert, who has been engaged in notary work for more than 30 years, and has a good understanding of all kinds of notary matters.

I have also met such people in my work in labor arbitration. Ask a question occasionally, and he can tell you on the spot all the laws, judicial interpretations, and even the specific legal provisions.

I remember when I was 16 years old, I met someone who inspired me to guide my life, and I have been inspired to this day. Now I am a little confused about what the future holds. I've always hoped to meet someone who will inspire me in the future, but I hope I can meet sooner.