suspension steer and roll properties

suspension steer and roll properties
it is possible for a vehicle to be understeer for small inputs and oversteer for large inputs (or the opposite), since it is a nonlinear system and does not have the same characteristics at all trims. Consequently, it is necessary to specify the range of inputs and velocities when making a determination of the vehicle's steer characteristics. There is a set of equivalent definitions in terms of yaw velocity or curvature (reciprocal of radius of curvature), which can be used interchangeably with these definitions. These definitions only apply to two-axle vehicles, since the Ackerman steer angle only applies to two-axle vehicles.

Mechanics glossary. 2013.

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