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https://link.springer.com/content/pdf/10.1007%2F978-1-4020-8676-2_3.pdf
Pushrod Suspension
https://www.youtube.com/watch?v=zwYybcpBeZI
http://www.swartzgarage.com/blog/2020/2/28/pushrod-suspension
Typically found in formula cars and other racecars
Components are kept internal, which improves the aerodynamics for open wheeled cars
(research still in progress)
Double wishbone
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Description
Shock absorbers and coil springs connect upper and lower control arms, with the steering knuckle and hub carrier on the lower control arm and the upper control arm attached to the frame
Shock absorber has no structural functions
Designed for frame-on-body vehicles
Used mostly on the front axle
Pros
More rigid than MacPherson strut suspension
Optimal design of elasto-kinematic parameters; particularly for camber recovery
Shock absorbers have no structural function; comfort can be improved because of hysterisis reduction
Possibility of lowering the hood profile
Cons
Heavier, greater unsprung weight
More complicated, more linkages, bushings, connectors and rubber parts
More expensive because of increased number of parts
Takes up more space
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