Compression springs have extensible features, racing coilovers bouncing it can be produced when a vehicle through uneven road uptake and release, reduce vehicle bounce amplitude, so that the wheels remain in contact with the road as possible. The energy generated during elongation is under shock absorbers work into heat spread into the air.

  1. The progressive spring:

     Original models typically use a progressive spring, the spring adopts a thickness, density are inconsistent design, the advantage is small when the pressure-receiving surface fluctuation can be absorbed by the elasticity of the lower part, to ensure the ride comfort, while pressure increases to a certain extent, act as a spring support coarser part of the body, but the disadvantage of this spring is not directly manipulate the feelings, the accuracy is poor.

Tips: elasticity: a measure of the hardness of the standard spring, metric units of kg / mm, on behalf of the spring compression weight 1mm (mm) required, the unit is kg (kilograms), the higher the value, the more representative the spring stiffness strong.

  2. Linear Spring:

     This spring from top to bottom thickness, M3 Adjustable Camber Plates constant density, the elastic coefficient is a fixed value. This design allows the vehicle to get spring more stable and linear dynamic response, help the driver better control of the vehicle, and more for performance-oriented and competitive car modified car, the downside of course is the comfort affected.

Read more:
http://buddiestime.com/index.php?do=/blog/4345/modified-ford-f-150-svt-raptor/
http://www.writerscafe.org/writing/maxslod/1434943/