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Friction disc shock absorbers or André Hartford dampers were an early form of shock absorber or damper used for car suspension. They were commonly used in the 1930s but were considered obsolete post-war. [1] Compared to modern shock absorbers friction dampers only provided limited shock absorption but served mainly to damp down oscillation.
The double-wishbone suspension can also be referred to as ‘double A-arm,’ though the arms themselves can be A-shaped, L-shaped, or even a single bar linkage. The complete TAK-4 independent suspension system set-up also includes a subframe which contains the axle differential , half shafts , and wheel ends with steering attachments and brakes .
The spindle of the shock absorber now became the upper suspension pivot, usually double-ended. One of the last mass-production sports cars to still use lever arm shock absorbers was the MG B. [8] This had a lever arm shock absorber as the upper wishbone. A popular handling upgrade in later years was to fit telescopic shock absorbers instead.
The shock absorber and coil spring mount to the wishbones to control vertical movement. Double wishbone designs allow the engineer to carefully control the motion of the wheel throughout suspension travel, controlling such parameters as camber angle, caster angle, toe pattern, roll center height, scrub radius, scuff (mechanical abrasion), and more.
Shock absorbers are an important part of car suspension designed to increase comfort, stability and overall safety. The shock absorber, produced with precision and engineering skills, has many important features. The most common type is a hydraulic shock absorber, which usually includes a piston, a cylinder, and an oil-filled chamber.
In automobiles, a double wishbone suspension is an independent suspension design using two (occasionally parallel) wishbone-shaped arms to locate the wheel. Each wishbone or arm has two mounting points to the chassis and one joint at the knuckle. The shock absorber and coil spring mount to the wishbones to control vertical movement.
Multi-link suspension allows the auto designer the ability to incorporate both good ride and good handling in the same vehicle.. In its simplest form, the multi-link suspension is orthogonal—i.e., it is possible to alter one parameter in the suspension at a time without affecting anything else.
This is commonly achieved via use of dampers and springs, providing downward forces on the wheels to counteract impact shocks. However, in push-rod suspension systems, this strut is mounted across the chassis, parallel to the ground, as opposed to the perpendicular system commonly used.