Vääntösauvojen

Vääntösauvojen, also known as torsion bars, are a type of automotive suspension component. They function as a spring, but instead of coiling and uncoiling like a conventional coil spring, they twist. One end of the torsion bar is fixed to the vehicle frame, while the other end is attached to a suspension control arm. When the wheel encounters a bump or dip in the road, the control arm moves, causing the torsion bar to twist. This twisting action stores and then releases energy, effectively absorbing the impact and maintaining contact between the tire and the road surface.

Torsion bars were commonly used in many vehicles from the early to mid-20th century, particularly in American and European automotive designs. They offered several advantages, including a compact design that could save space compared to coil springs and a relatively simple construction. In some applications, they also allowed for easier ride height adjustment by simply rotating the torsion bar.

However, over time, torsion bars have become less prevalent in passenger car suspension systems, largely being replaced by coil springs and MacPherson struts. These modern suspension designs often offer better performance characteristics, a wider range of adjustability, and can be more cost-effective to manufacture in large quantities. Despite their decline in passenger cars, torsion bars are still found in some heavy-duty trucks, military vehicles, and certain specialized applications where their inherent strength and packaging benefits are advantageous.