1. Progressive spring
Generally speaking, progressive springs are used when cars are in the factory. The progressive spring adopts a design that is inconsistent in thickness and density, which allows the car to absorb the undulations of the road surface through the part with a lower elastic coefficient when the pressure is small, so as to ensure the ride comfort. When the pressure increases, the thicker part The spring supports the body. The general disadvantage of progressive springs is that the control experience is not obvious and the accuracy is difficult to master.
2. Linear spring
Linear springs are just the opposite of progressive springs. Linear springs enable the driver to better control the vehicle. The thickness and density from top to bottom are unchanged, and the elastic coefficient is a fixed value. This kind of spring design can make the vehicle obtain a more stable and linear dynamic response. It is mostly used for performance-oriented modified cars and competitive vehicles. The disadvantage is that the driver’s comfort will be affected.
In addition, some racing cars and modified cars will add a thinner and softer small auxiliary spring to the harder linear spring. This combined spring can not only increase comfort, but also reduce the rebound force when the main spring is compressed and rebounds. , To prevent the main spring from leaving the spring seat.
3. Short spring
In comparison, the short spring is a little bit stronger and thicker than the original spring. Installing a short spring on a driving car can lower the center of gravity of the car body, reduce the car’s roll when cornering, and make driving more stable and smooth. The damping setting of the original shock absorber is comfortable, so the short spring and the original shock absorber are not very stable in cooperation. It cannot effectively suppress the rebound and compression of the short spring. When driving on bumpy roads, there will be a This kind of uncomfortable jumping sensation, in the long run, the life of the shock absorber will be greatly shortened, and there may be oil leakage. Of course, the above conditions are relatively speaking. There will be no such serious damage in daily driving, and try not to drive violently. After all, the original shock absorber cannot withstand the pressure of high load.
Replacing the short spring is the most affordable modification plan to reduce the height of the vehicle. It is a good choice for those with a small budget. After replacing the short spring, the gap between the upper edge of the tire and the fender is generally about two and a half fingers.
Of course, you get what you pay for. Short springs have limited improvement in control performance, and there are many drawbacks, so you must be clear about your purpose when buying, otherwise the expected effect will not be achieved after installation. The necessary waste is sadly reminded.