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The spring rate is the rate of the spring and damper measured at the damper. The wheel rate is the rate the tyre is going to see and this is dictated by the motion ratio and spring rate. Let us know discuss the mechanics of how to calculate the wheel rate.
seconds per lap, especially when working with an unfamiliar car? In the first of a series of tech tips on springs and dampers, we will explore how to develop baseline spring rates for ride to provide a solid foundation to tune from.
The main function of the dampers is to control the transient behavior of the sprung and unsprung masses of the vehicle. This is accomplished by damping the energy stored in the springs from suspension movement. The damper generates a force defined by the characteristic curve and the velocity of the damper.
5.6 Shock absorbers (suspension dampers) 347 5.6.1 Types offitting 348 5.6.2 Twin-tubeshock absorbers, non-pressurized 349 5.6.3 Twin-tubeshock absorbers, pressurized 355 5.6.4 Monotube dampers, pressurized 357 5.6.5 Monotube dampers, non-pressurized 364 5.6.6 Damping diagrams and characteristics 366 5.6.7 Damper attachments 367
Explanation of spring suspension and how dampers work to keep a smooth and stable ride in a car. Complete with diagrams of hydraulic suspension.
The primary function of the damper on the vehicle is to damp the sprung and unsprung masses at their resonant frequencies. For the sprung mass, this includes the pitch, heave and roll resonant frequencies.
Resonant frequency example. TR = 1.45 Input amplitude = 4 in. Output amplitude = 1.45 x 4in = 5.8 in. This means that at this frequency the car movement is greater than the input. The driver will feel a harsh ride, and it will feel like the body of the car is catapulted off the speed bump.
