End. Start here. Continuing the story of the dampers, I would like to mention some features of their designs, so it was easier to understand how to deal with failures and by what methods. Earlier, in Soviet times, with spare parts for cars was simply trouble. As said Raikin, "defsit. And the total. In the era of the Iron Curtain, car owner, who bought a set of rubber stamp on the certificate of registration, then a multi-page, so that, God forbid, the same person has not acquired another 4-wheel drive. For those age-old times, all that could be dismantled, disassembled and repaired. Dampers Zhiguli were no exception. The current stance of some "eights" dismantled, changed seals, refill "veretenku. In general, put their hands to train at least another year of relatively intact car. Now the situation has changed radically. The abundance of foreign brands just run up my eyes. And what brands! Sachs, Boge, Kayaba, Tokico, Monroe, Bilstein, Koni. If the advertising of such famous companies can be seen anywhere, the number of new businesses and lure firmochek low prices for their products, labels «Made for Europe», etc. Often, even the price of the "original" in different stores may differ significantly. How to make the right choice in this variety, buy what you need, but still not particularly facilitate the purse? To clearly define its wishes needed to understand the structure and characteristics of the cartridge and racks manufactured today. Absorber - the design that converts forward motion into heat. As the working fluid performs a special shock absorber oil with specific characteristics, the most important of which - churning. The faster foaming oil, the sooner the shock loses its properties. Kinetic motion into heat convert valves and throttles. At slow speeds the suspension oil flows through small openings - throttles. That chokes are responsible for the rolls in cornering, braking peck, in general, operate with a smooth movement of the body relative to unsprung mass. Hardly anyone pays due attention to setting up the chokes like mainly engaged in sports manufacturers and the aftermarket shock absorbers. Valves begin to perform their functions at high speeds suspension - hit by an obstacle, passage holes, bumps. Here is their setup takes absolutely all the manufacturers, because it directly concerns the security, as bad or misconfigured valve will allow the wheel to lose contact with the road. And a little about design. Modern shock absorbers are of three types: 1) two-pipe, hydraulic, and 2) double-tube gas-hydraulic with low pressure, and 3) single-tube with hydraulic high pressure gas. I do not think that this article is to describe the working principles of these species, it is sufficient to end the characteristics depending on the design. Fully hydraulic shock absorbers are almost not released because of twin-tube gas-oil-pressurization performance is better ceteris paribus. Double-tube gas shock absorbers may be different for stiffness of the manufacturer specifications. To date, this option is most applicable, since the gas pressure prevents foaming. These racks are installed on most modern cars. Successful design, low cost, that still need for civil cars? The main thing that you can vary the damper characteristics, depending on applicability. The ratio of the efforts of compression / rebound from such structures comes to 1 / 6. Monotube shock absorbers are used mainly to a specific technique - sports cars, SUVs. On the one hand, the design of them is easier, on the other - precision manufacturing, the cost higher, so as a result of the above and the final price. But the ratio of Compression / rebound in single-tube design does not exceed 1 / 1, 2, 1 / 1, 25. Therefore, the applicability of their narrower. It is known that such characteristics as resistance to compression and is fundamental for the suspension settings on the active drive. The higher the compression force, the sharper the prescribed trajectory, but more shaking. Oil is not foamed, as it further backs high-pressure gas. Even at long off-road, performance does not deteriorate. And now a few words about the practical aspect - the replacement of worn shock absorber struts. Most modern cars have front of a traditional McPherson, that is, except the oil reservoir and a piston, a rack there are additional elements - the mount under the steering knuckle, lower cup springs. On each machine location of such structural elements are different. Therefore, often, a manufacturer produces the cartridge to reduce the price of the final product. Cartridge is definitely cheaper than the rack assembly, however, need to replace some plumbing skills. Well, if they exist - if not, not a fact that will save money. Services servismenov road today. The best choice for a car to be original, if you do not want to radically change the control or tuning to do. But even here you can save. Brands damper on the conveyor are well known, so it makes sense to overpay for a cardboard box with the inscription «Toyota» 30% of the cost, it is better to get KYB or Tokico. Same with BMW, but there's a box will take even more. Rather than take the BMW Sachs, will not lose. From my own experience I can say that European and Japanese brands are well-known for quality no complaints never raised. I remember only one exception - Monroe. Not to say that the characteristics of shock absorbers of this firm are bad for the competition, there is quite a decent product. The case seems to me that they are too tender for our roads and are designed for pure European motorways. As for us on the tarmac and dirt and sand that washed with chrome rod, the rod rubs gland, begins to ooze oil, etc. The service life of Monroe is not enough, in my humble opinion. Often when buying in retail stores are guaranteed to shock. For example, the Kayaba - year, and the Koni - even a lifetime, provided that the vehicle operates one owner. Koni - general topic of a separate article. Very unique and quality product. There's an opportunity to control the efforts of compression / rebound as to optimize performance for themselves personally, and to wear as a result of a long operation. Another well-known premium brand - Bilstein. Nothing bad about them I can not say, create products for fans of hard-sport style. If you're one of them - I recommend. Just seems to me that counterfeits of this company are sold at every step. Even buying a rack Bilstein in a respectable shop can not be sure at 100% capacity. Happened once and I run into a fake. There are already helps neither the experience nor the reputation of the outlet. Fake look a lot easier than having to research and technological development. Therefore, seen as "leftist" can cooler original. Even if you can prove sellers inconsistency specifications, it is still "find yourself" at the cost of installation. You can certainly go to the end, to sue and go to court hearings as a job. But there is a saying: "not worth powder and shot." There is such a case. So to save in our tough times, too, need to mind.
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