chain maintenance

1. The chain should not swing, but swing on the shaft. The end faces of the two sprockets of the same transmission element shall be in the same plane, and one millimeter shall be allowed when the distance between the centres of the sprockets is 0.5 m. The center of the sprocket is allowed to be 2 mm high from 0.5 meters, but the lateral phenomenon of friction sprocket is not allowed. If the two wheels are too large, it is easy to produce off-chain and accelerated wear. Offset must be checked and adjusted when replacing sprockets.

2. The tightness of the hanging chain should be appropriate, too tight, can not increase the power consumption, the bearing is easy to wear; the chain is easy to beat and release. The tightness of the chain is: from the middle of the chain, or under pressure, the distance between the centers of the two chains is about 2% to 3%.

3. The new lifting chain is too long or too long after use. It's hard to adjust, but it can be moved to the link section, but it has to be an even number. The link should pass behind the chain, the lock plate is inserted outside, and the opening of the lock plate should turn in the opposite direction.

4. After the sprocket is seriously worn, the new sprocket and new chain should be replaced at the same time to ensure good meshing. You can't just replace a new chain or a new sprocket alone. Otherwise, it will cause poor meshing and accelerate the wear of the new chain or the new sprocket. After the sprocket tooth surface is worn to a certain extent, it should be turned over and used in time (referring to the sprocket used for the adjustable surface). to extend the usage time.

5. The old lifting chain cannot be mixed with some new chains, otherwise it is easy to create shocks and damage the chain during transmission.

6. Remember to add lubricating oil during working hours. Lubricant must enter the gap between the drum and the inner sleeve to improve working conditions and reduce wear.

maintain

Generally speaking, our new car is a layer of oil - I mean the chain, but oil is not lubricating oil, it should be a protective oil, it may be time to consider storing the chain for a longer period of time to avoid rusting and corroding the chain, this oil is not lubricating oil. After riding for a period of time, lubrication is needed. The purpose of lubrication is: "too far". You must remember this. You may have seen some car chains. The flywheel is black, full of grease and sticky, which is the most taboo. It will be a more typical belonging to oil, when riding that car it is easy to stick to dust, whether it is country or mountain road, the long journey is more dirty, put the chain and flywheel sand will be adjusted with the steering of the car, which will greatly increase the bicycle touring The wear rate of the system, remember that we repaired the car less than 3000 kilometers of the customer, 27 deore 9 partial speed walking system jump teeth wear, the rear derailleur is very sharp! The spacing of the chain is very large, the teeth of the flywheel and the teeth of the front teeth are also worn very sharply , which can cause severe wear and tear in the case of cycling. If you follow normal maintenance, such a system can run at least 7, 8 kilometers or more, and customers will run 10,000+ kilometers, so don't doubt the longevity of your variable speed walking system.

1. Oiling

Don't let it go, the age of wolf lube, bicycles, sewing machine oil, wd40 multi-purpose lubrication cleaner, high-end bicycle special lubricant, can use all these bicycle chains, everyone has advantages and disadvantages, there is no perfection in the world, only It is suitable for our needs and purposes, and pay attention to the method of use, but what is the calculation of motorcycle oil, for example, sewing machine oil is sticky; wd40 has a good cleaning effect, but the lubrication is not strong, special lubricating oil, some are added with Fu, VAX pulling system , Not dirty pants and good lubricating performance, but expensive, appropriate lubricating oil is small in size, cheap, and generally effective.

2. Oiling method

1. One person can only oil the chain, other cars should not be greasy, remember! Extremely wrong car wreck - spraying oil into the hub, spraying oil on the center axle, and applying a buzzword, is a human tragedy.

2. Do not spray on the tire. Do not spray on wd40. Use a cloth to place the chain under the chain.

3. The realm of advanced oiling: "dry and wet chain".

What does this mean? Good lubrication is invisible oil, not greasy, as long as there is oil between the movement of the chain joints (generally more than 110 joints, haha), there is no oil exposed in other places, these Exposed oil is easy to stick to dust and sand, remember, so it is best to use oil, use a cloth to wipe, it will be fine.

3. Oiling frequency

Always keep some oil between the chain joints, not too much, just a little. In case of lack of oil, the rear derailleur chain is squeaking when riding, and even has rust spots on it, so it needs to be oiled. If you plan to go out for a 100km off-road ride today, you can also add some oil before. Obviously riding this day is much lighter, here's a word, if it is wd40, even if you put on oil before departure in the morning, and then go to Qinglong Mountain in the hottest time of summer, the 100km off-road conditions are very bad, then when you return, these are The oil is almost the same, if it is finishiline, there is no problem.