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Since then, all Porsche 911s have had front MacPherson struts, except the 992-based 911 GT3, which uses a double wishbone. [ 16 ] In recent years, General Motors and Ford have introduced a modified strut set-up, "Hi-Per Strut" and "Revoknuckle" respectively, that split the strut into two components that handle the up-and-down flexibility and ...
Double wishbone suspension (front) on a Saab Quantum IV. The double-wishbone suspension can also be referred to as "double A-arms", though the arms themselves can be A-shaped or L-shaped. A single wishbone or A-arm can also be used in various other suspension types, such as variations of the MacPherson strut.
Pull-rod suspension and push-rod suspension refer to a specialised type of automotive suspension system which is largely based on a double-wishbone system, incorporating elements of the commonly used MacPherson strut. [1] In cars, suspension refers to the system by which the vehicle maintains contact between all of its wheels and the ground.
You shouldn't dismiss MacPherson struts, which are on more top cars than you'd think. Nearly all Porsche 911s, every BMW M3, the list goes on...
In either case, the difference is that the single bottom wishbone is replaced by a pair of suspension links forming a trapezoidal four-bar linkage. This allows the kingpin to pivot about a pivot point nearer the center of the wheel's contact patch instead of the traditional pivot point at the ball joint of the bottom wishbone. [2]
The kingpin offset compares favorably to that of double wishbone suspensions (20-30mm vs 40mm). The main advantage of RevoKnuckle compared to MacPherson struts is the reduction in torque steer, especially for high powered front-wheel drive (FWD) applications.
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