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Spring Strut Suspension


The linear- and radial forces are taken up in this rear-axle suspension by different elements. A co-effect or counter-steering effect is thereby possible when the springs are compressed. Through the length of the wishbone, the camber changes slightly. Thus the wishbone strut suspension is an advancement of the torsion beam axle suspension found in front-wheel drive vehicles. In addition, it is more compact and thus allows more space, e.g., for the fuel tank.

How it works

A rear suspension exclusively with trailing arms has only low guidance effects when the springs are compressed. In this case, both wheels of one axle not are independent of each other, particularly in torsion beam axles. Through the distribution of the wheel guiding tasks to various elements, the designers have a greater degree of freedom. The camber can now also be altered directly with the spring compression. In the axle (see above figure) the function of the stabiliser has also been separated from the wheel guidance.


In the undriven rear axle, (without 4-wheel steering) track- and camber changes are possible, when driving, only with the spring compression. 06/09

Squeezing the old supporting joint