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Geometric roll center is solely dictated by the suspension geometry, and can be found using principles of the instant center of rotation.; Force based roll center, according to the US Society of Automotive Engineers, is "The point in the transverse vertical plane through any pair of wheel centers at which lateral forces may be applied to the sprung mass without producing suspension roll".
To compensate for this unavoidable effect, car designers often bias the car's handling toward less corner-entry understeer (such as by lowering the front roll center), and add rearward bias to the aerodynamic downforce to compensate in higher-speed corners. The rearward aerodynamic bias may be achieved by an airfoil or "spoiler" mounted near ...
In racing cars, bushings tend to be made of harder materials for good handling such as brass or delrin. In Passenger cars, bushings tend to be made of softer material for added comfort. In general physical terms, the mass and mechanical hysteresis (damping effect) of solid parts should be accounted for in a dynamic analysis, as well as their ...
The roll axis is the line through the front and rear roll centers that the vehicle rolls around during cornering. The distance from this axis to the sprung center of gravity height is the roll moment arm length.
The double wishbone suspension was introduced in the 1930s. French car maker Citroën began using it in their 1934 Rosalie and Traction Avant models. Packard Motor Car Company of Detroit, Michigan, used it on the Packard One-Twenty from 1935,[1] and advertised it as a safety feature. During that time MacPherson strut was still in the area of ...
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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. The cross beam of the H holds the two trailing arms together, and provides the roll stiffness of the suspension, by twisting as the two trailing arms move vertically, relative to each other.
Almost 30 years after being convicted of rolling her car into a South Carolina lake and drowning her two sons, Susan Smith is up for parole. Smith, 53, is serving life in prison after being ...