Semi Trailing Arm - Rear Axles

When the wheel bump and rebound-travel they cause spatial movement, so the drive shafts

need two joints per side with angular mobility and length compensation. The horizontal and vertical angles determine the roll steer properties.

Tilted (Multiple) Shaft Steering Rear Axle of the Opel Omega (1999),a further development of the tilted shaft steering axle.


The differential casing of the rear-axle drive is above three elastic bearings, noise-isolated, connected with subframe (1), and this subframe is again, with four especially developed elastomer bearings on the installation (pos. 2 to 5). On top of part seated are the bearings (6) for the back of the stabilizer. Both of the extension arms (8) take up the inner bearings
of the titled shaft, which carry the barrel-shaped helical spring (9). In order to get a flat bottom of the luggage trunk, they were transferred to the front of the axle drive shafts. The transmission (wheel to spring), becomes thereby with 1.5 comparatively large. The shock absorber (10) are
seated behind the center of the axle.

Flat, non-driven air suspended semi-trailing-arm rear axle of the Mercedes-Benz V class, whose driven front axle with spring-and-shock absorber strut has  conventional coil springs. The air-spring bellows are supplied by an electrically powered compressor. The individual wheel adjustment permits the lowering or lifting of the vehicles as well as a constant vehicle height,
regardless of - even one - sided loading. It is also possible to conunteract body lift during cornering. The damping properties of the shock absorbers are affected by spring bellow pressure depending on the load. The short rolling lobe air-spring elements make a low load floor possible; its rollling movement during compression and rebound results in self-cleaning. In the case of semi-trailing arm axles, roll understeer of the rear axle can be achieved by means of a  negative verticle angle of pivot-axis inclination; the kinematic toe-in alteration is also reduced. 


Constant Velocity Sliding Joint.
In front-drive vehicles, considerable articulation angles of the drive axles occur.