The principle of bicycle quick release

The origin of the quick release was born in 1927 by the Italian athlete Tullio Campagnolo, who was in a dominant position in a game but encountered obstacles in the process of shifting. At that time, a tooth was stuck on the rear hub, and he had to deal with it immediately, eliminating the meshed chain and reinstalling the rear wheel. In addition, the climate at that time was quite cold, and his hands were not heard to waste his most precious time. To this end, he decided to develop a device that can quickly separate the car body and the wheel set, that is, quick release. The Tullio is the founder of Campagnolo in the current three major transmission brands, and today still holds a leading position in the bicycle market.


For those who go out to ride, there are several problems that need to be prepared, such as broken or broken chains. Most cyclists choose to carry a simple combination tool. If the current tires are still in the past, it is bound to bring the corresponding wrenches to the body, but these weights become a small burden in riding. The advent of the quick release means that the bicycle can go in the direction of convenient and quick maintenance. It only needs two hands to hang open, and it can easily repair the tires and change tires.

It is very simple to say, most people are still not familiar with the principle of quick release, and then create doubts that are not clear to them. "The principle is that the quick-release lever is divided into thick and thin, even if it is explained, it is still a lot of trouble." When you pull the lever in the opposite direction, the big eyes will find that the loose surface is a thin part of the contact groove. After the screw is used up, it is pushed into the thick block to push it.

Expressed in one sentence, it means to shorten the wheelbase by using the difference in the thickness of the lever.

The difficulty lies in the fact that people who don't know the principle can't accurately pinch the open quick release. It's not too tight to buckle; it's too loose to spin, so the wrong movie will be staged: buckled tightly. Where is the mistake? Wrong in this step, the quick release that has not been tightened is directly buckled, so that there is no way to achieve "true locking". When the lever is loose, the tightening effect will have a pressing effect. The buckle is given only the illusion that you mistakenly think that the lock is correct, and it is correctly removed, adjusted, and buckled. Do this to pressurize the eccentric shaft!

When you find that the rubber in the lever is deformed, it is mostly caused by deviating from the normal curvature and causing deformation. This will cause the quick release to be damaged; or when using it, it will make an abnormal sound when twisting and quick-release, probably because Rusting, the above two cases can be used to identify the quick release replacement timing. Looking in the middle, there are 2 symmetrical springs in it, on the one hand, it can make the quick release lock tighter (to absorb the space); on the one hand, it can alleviate the trouble of disassembly.

"In fact, the quick release is not difficult to understand." Gently buckled, equivalent to the quick release will also gently detach, if you do not lock, the way to judge is to step on a few laps, feel the sound of metal friction. The reason is that the quick release without clamping creates a gap, and when it is not pressed, it causes friction and then makes a sound.

"It's too tight and can't be buckled, and I don't know if there is any lock." It causes the car to make strange noises, which is a common confusion for consumers. In fact, as long as the "fine tuning" can solve these problems, if the position of the lever is not good to judge the tightness, as long as the adjustment button is applied by the other party, the problem of the quick release can be solved. Careful observation, the existence of the quick release seems to appear on other objects, such as: folding mechanism of small folds.

On the wheel set that does not use the quick release, the car mechanic mostly uses the brute force to lock the two screws. "The method is not bad. The problem is that the two sides are not evenly applied, which is easy to cause the wheel to deviate. This test the master experience. How many." At present, the quick release, appearance or structural basic principle appearing on the market are the same. Only some quick release will hide the lever in the rubber or metal casing, and there is not much difference in the quick release of the front and rear wheels.

In the case of road vehicles, the quick release of the front and rear wheels differs in the length of the shaft, and the front wheels are relatively short; the rear wheels require a longer shaft because of the relationship between the transmission and the flywheel, and the part of the mountain bike, the quick release of the front wheels The force is large, the type will be thicker; the quick release of the rear wheel is much slimmer. If you buy a wheel set, the bonus quick release does not appeal to you. "There is no problem changing to your favorite quick release."

Quick release is no more difficult to imagine than the imagination, the actual use of 1, 2 times, will soon be easy to get started! "Try to get a better understanding of the world of bicycles by hands-on contact." The method is not difficult, and it is difficult for you to accept open minds.

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