Torsion Springs
A torsion spring stores energy in a rotational motion. This means that it must be twisted to store energy. Torsion springs are closely wound such that coils are in close contact. To function, they have to attach to another part at the ends. When force is exerted on these spring ends, the coil tightens. The spring pulls the attached parts with it as it returns to original position.
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How Torsion Springs Work
These springs work quite differently compared to torsion bars. Instead of compressing like in coil springs or flattening like in leaf springs torsion springs twist along its length when the vehicle wishbone moves up and down. Torsion springs are attached to the wishbone of the vehicle on one end. The other end is fixed to the chassis, and it does not twist. When the wheel hits a bumps tension is created on springs, and hence they twist. After passing the bump the springs unwinds pushing wheels down.
Typically torsion springs are mounted on vehicles in a front to rear position creating greater length for up and down movement of the wheel. The ends are usually attached on a key which is an anchor piece. The keys’ position can be adjusted accordingly to match suitable heights. These springs use torsion bar bolts to raise the position of the car. The height of the car increase as the bolt is turned. Torsions springs rates are determined by the diameter, length, material and thickness of the bar.
Advantages
One of the benefits of torsion springs is adjustability. The driver can adjust the suspension of his vehicle by rotating torsion bar relative to suspension frame. This adjustability feature makes torsion springs ideal off the road cars. In a nutshell, the height of the vehicle can be adjusted.
Therefore, torsion springs allow you to enjoy the ride at the height of your choice. Adjusting the height of your vehicle especially when the springs start to wear extends their lifespan. In addition it maintains a suitable height that does not interfere with tire wear and vehicle alignment.
Torsion springs are also space efficient. They create an extra room which can be used to fit axles and other components of the suspension system
Disadvantages
On the downside raising automobiles with torsion bars does not increase your vehicles suspension motion range.
Similarly, torsion springs are very likely to be damaged by bumps uneven terrain and road debris given that they are mounted underneath the vehicles. It is therefore important to check for damage if they are cracked or bent. The most common sign of damaged torsion springs is a ride sagging on one side.
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Read more about your car’s suspension systems: