The theoretical point about which the chassis rolls. The distance between the center of gravity and the roll center dictates the mechanical roll stiffness required. Aerodynamics and Downforce At high speeds, aerodynamic forces dwarf mechanical forces.
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ΔWz=m⋅ayt(hc⋅kϕkϕf+kϕr−m⋅g⋅hc+hr1)cap delta cap W sub z equals the fraction with numerator m center dot a sub y and denominator t end-fraction open paren the fraction with numerator h sub c center dot k sub phi and denominator k sub phi f end-sub plus k sub phi r end-sub minus m center dot g center dot h sub c end-fraction plus the fraction with numerator h sub r and denominator 1 end-fraction close paren = Vehicle mass = Lateral acceleration = Track width = Distance from CG to roll axis kϕk sub phi = Roll stiffness 2. The Bicycle Model (Yaw Rate) The theoretical point about which the chassis rolls
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