Bicycle tire maintenance and repair

The tires of the race bikes are tube-shaped, thin and thin, and very easy to be damaged during training and competition. Special attention should be paid to maintenance.
Bicycle racing tires are divided into various models according to their weight. Routine training more than 250 grams of tires, the game can be based on the road conditions, the choice of 200-300 grams of tires. The tread is thinner, the smaller the contact surface with the road, the friction is also small, is conducive to improving the car's forward speed.
The purpose of the tire injection of a certain gas is: to make the bike has a certain degree of flexibility to reduce the radial impact of the impact of the wheel; in the case of bicycle load, reduce the road surface with the tire contact surface to reduce friction. To this end, training and competition, the tire pressure to be suitable. Highway tires generally maintain 5 - 7kg / cm2 pressure, the site tire is best to inject 10 - 12kg2 / cm2 pressure. Intrauterine pressure is too large when the tire is easy to burst, if too small, then increase the friction with the ground, increase the unnecessary physical exertion, tires are also easy to slip from the wheel. Especially in the racing ride, tires pressure is small, easier to slip off the wheel, dangerous, resulting in athletes injured.
Two hours before each ride to give the tires filled with gas, and then check the tires are leaked, the surface with or without foreign parts or stab wounds. In the summer training and rest after the game, the car should be placed in the shade, to avoid the expansion of the tire after the gas burst and burst. Save the tires, the injection of a small amount of gas, hanging up, placed in the dark ventilated place, the humidity should not be too high to prevent the aging of the aging gel.
If you need to replace the new tires when the game, the new tire should be installed in advance, at least 50 km ride, check the tires are good, to confirm no problem before use.
Tubing repair. The first is to find holes. The method is to break the tire into the amount of gas, into the water, the largest place where the bubble is where the hole. If the leak is not easy to find holes everywhere, the tire can be folded on both sides of the valve back, hand tight or tied with a rope, do not let the gas through, another person to help cheer, if the gas soon after the gas leak, Mouth near the leak; do not leak gas or leak is slow that the hole is not here. You can move the fold back, continue to check by paragraph, until you find the hole so far.
Find the leaky place, the first tire removed from the tube. Take time can not be forced to pull, to prevent the inner tube off. And then use the wood or steel saw blade around the broken edge of the brush clean, or clean with gasoline, will fill the skin sticky, and then the tires sewn good. Stitch when the suture do not pull too tight, so as to avoid uneven tire thickness.
30 minutes maintenance can be systematically check the bike all the body. If the machine is in good working condition, the inspection work can be done quickly. If there is a problem, it may take a long time to check the maintenance work. The next section provides a variety of details of the skills you are in the body care must pay attention to matters. Self-service maintenance, you can have a more in-depth understanding of the bike, and can take this check the bike's mechanical operation is normal. This work is best carried out in regular clean-up work. Soon after, you can find the problem by intuition, once there is a look, feel or sounds like a place, you immediately know where to check.

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