Article posted Sun Mar 05 2023

Handling: An Introduction to Vehicle Suspension

The suspension system in a vehicle is responsible for providing a smooth and comfortable ride, while also keeping the wheels in contact with the road. The suspension system is composed of several components, including shocks, springs, dampers, and coilover suspension. In this article, we will explain the difference between these components and whether they are interchangeable.

Shocks

Shocks are one of the most important components of a vehicle's suspension system. They are responsible for controlling the movement of the springs, which in turn affects the movement of the vehicle. Shocks are designed to absorb the impact of bumps and uneven road surfaces, ensuring that the tires maintain contact with the road.

The function of shocks is to dampen the oscillations of the springs when they compress and rebound. This is achieved through the use of hydraulic fluid and valves, which help to control the movement of the suspension. A good shock will ensure that the vehicle maintains its stability, even when going over rough terrain.

Springs

Springs are another important component of a vehicle's suspension system. They are designed to support the weight of the vehicle and absorb the energy of bumps and vibrations. When a spring is compressed, it stores energy, which is then released when the spring rebounds.

There are different types of springs used in vehicles, including coil springs, leaf springs, and torsion bars. Coil springs are the most common type of spring used in modern vehicles, and they are typically made from steel. Leaf springs are commonly used in trucks and SUVs, and they are made from a series of steel plates stacked on top of each other. Torsion bars are used in some vehicles, and they are designed to twist when a load is applied to them.

Dampers

Dampers are also known as shock absorbers, and they work together with the springs to control the movement of the suspension. Dampers are designed to convert the kinetic energy of the suspension into heat energy, which is then dissipated. This helps to prevent the suspension from bouncing and ensures that the tires maintain contact with the road.

Coilover Suspension

A coilover suspension is a type of suspension system that combines the shock absorber and spring into one unit. This design allows for greater adjustability, as the ride height and spring rate can be adjusted independently of each other, and can be achieved by raising the vehicle and using a specialist key to adjust the ride height, making the suspension firmer. High grade coilover kits also include damper control, allowing more precise set-up of the vehicles handlings. Coilover suspensions are commonly used in high-performance vehicles, as they offer improved handling and a lower center of gravity.

Interchangeability

While the components of a vehicle's suspension system may seem interchangeable, they are often designed to work together as a complete system. Swapping out one component, such as a shock or spring, without considering the other components can have a significant impact on the vehicle's handling and ride comfort.

However, there are some instances where components can be swapped out, particularly if they are designed to be adjustable or if they are designed for use in a specific vehicle. Coilover suspensions, for example, are designed to be easily adjustable and can often be swapped out for other coilover suspensions without issue.

Conclusion

The suspension system in a vehicle is composed of several components, including shocks, springs, dampers, and coilover suspension. While these components may seem interchangeable, they are often designed to work together as a complete system. Swapping out one component without considering the other components can have a significant impact on the vehicle's handling and ride comfort. A full alignment is required after general suspension maintenance to ensure the vehicle is tracking correctly.