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The twist-beam rear suspension (also torsion-beam axle, deformable torsion beam, or compound crank) is a type of automobile suspension based on a large H- or C-shaped member. The front of the H attaches to the body via rubber bushings , and the rear of the H carries each stub-axle assembly, on each side of the car.
Walking beams have low bogie pivots with a balance beam going out and under the axles. Any suspension is above the bogey pivot. They can have leaf springs, rubber load cushions, air bags, or be solidly mounted. Walking beams are very stable at low speeds and when stopped. Mack and Hendrickson models are available.
With a beam axle, the camber angle between the wheels is the same regardless of its location in the travel of the suspension. A beam axle's location in the fore and aft directions is constrained by one of several suspension components, including trailing arms, semi-trailing arms, radius rods, and leaf springs.
The spring rate (or suspension rate) is a component in setting the vehicle's ride height or its location in the suspension stroke. When a spring is compressed or stretched, the force it exerts, is proportional to its change in length. The spring rate or spring constant of a spring is the change in the force it exerts, divided by the change in ...
The Trado consisted of a leaf-springed bogie with two actuated road wheels that could be easily attached to, driven by and rotate on the back axis of any commercial truck, thus adding a "walking beam" to the vehicle that significantly improved its cross-country performance.
Hydrolastic is a type of space-efficient automotive suspension system used in many cars produced by British Motor Corporation (BMC) and its successor companies.. Invented by British rubber engineer Alex Moulton, and first used on the 1962 BMC project ADO16 under designer Alec Issigonis, later to be launched as the Morris 1100.
4] The complete rear suspension assembly is carried in a steel crossbeam cradle (shown ghosted in the diagram below), which is attached to the vehicle body via four rubber vee-blocks and also carries the differential (blue) and inboard brakes (red). The rear wheels are located transversely by top links and wheel carriers (green) and lower links ...
Another use of the swing axle concept is Ford's "Twin I-Beam" front suspension for trucks. This system has solid axles, and may transmit power in four-wheel-drive versions, where it is called "Twin Traction Beam". It is an independent suspension system, as each tyre rises and falls without affecting the position of the other.