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The axis of the strut may be angled inwards from the steering axis at the bottom, to clear the tyre, which makes the bottom follow an arc when steering. The MacPherson strut benefited from introduction of unibody construction, because its design requires substantial vertical space and a strong top mount, which unibody construction can provide.
MacPherson strut (painted black) on Proton Exora. This is the most common, widely used front suspension system in cars today. It is a very simple and effective design that uses a strut-type spring and shock absorber that work as a team that will pivot on a single ball joint.
In 1947 Earle MacPherson patented the MacPherson strut for use on the Chevrolet Cadet. [4] [5] This was the first true strut suspension for cars: the stub axle was rigidly fixed to the strut, thus always keeping the same angle with it, rather than being attached through a swivelling joint as for Stout's Scarab.
A strut bar, strut brace, or strut tower brace (STB) is an automotive suspension accessory on a monocoque or unibody chassis to provide extra stiffness between the strut towers. With a MacPherson strut suspension system where the spring and shock absorber combine in one suspension unit, which also replaces the upper control arm, the entire ...
This became the first car to use the true MacPherson strut suspension. Ford's Poissy plant got off to a slow start with the Vedette, however, and the Fords Zephyr and Consul which captured the headlines at the 1950 London Motor Show have also been claimed as the first cars to appear "in mass production" with MacPherson struts. [2]
Double wishbone suspensions are more complex, impose more difficult packaging constraints, and are thus often more expensive than other systems like a MacPherson strut. Due to the increased number of components within the suspension setup, it takes much longer to service and is heavier than an equivalent MacPherson design.
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