 |  |
|
| | Technical details The graph on the left shows the different frequency areas(click for an enlargement). Area  , is what we call the natural frequency of the body, which is around 1 Hz. The roll and pitch movements of the body are in this frequency area and can be reduced by adding more rebound damping.Area  , is the natural frequency of the axle, which is around 10 Hz. Although the suspension does need adequate damping in this area not to loose grip, you should also enable the wheels to freely follow the bumps in the road to reduce body motion. At 10Hz the dampers therefore need to be softer than at 1 Hz to keep an acceptable comfort level. Conventional type dampers cannot offer this feature, as damping forces remain unchanged irrespective of frequency. FSD can.Area  , are all frequencies between 1 and 10Hz. In this area the amplitudes should be least damped to avoid passenger discomfort. Conventional dampers can cause vibrations in these amplitudes. The characteristic on the left shows the difference in damping level of a KONI shock absorber with FSD, at the same damping speeds, but different frequencies. | |