The spring-damper system consists of two subsystems: the coil-over damper itself (see
gure 2.2, and the anti-roll system. The coil spring absorbs the energy from a bump by
compressing, and releases it again at an uncontrolled rate. The spring will continue to
bounce until all of the energy originally put into it is dissipated. Dampers are used to
control this energy dissipation. They slow down and reduce the amplitude of the wheel
motion by converting kinetic energy into heat.
The anti-roll system consists of a torsion bar with a lever on each end. If the movements
on each end of the bar are not exactly the same, it will be twisted. This results in a
reaction force.