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What is suspension spring rate?
In simple terms, a spring’s rate is the amount of weight required to compress itself a single inch. It’s a universal measurement, it applies to everything from lowering springs to valve springs, and it’ll look something like this: 500 lbs/in. The bigger the number, the stiffer the spring.
What is the unit for spring rate?
N/m
The unit of measurements of spring rate is N/m or Ibf/in i.e. force divided by distance. The spring rate of a spring is the change in the force applied divided by the change in diversion of the spring. There are various types of springs, let’s see some types of spring since we know what a spring and spring rate are.
How do you calculate spring suspension?
How To Calculate Spring Rates
- L = Free Length of The Unloaded Spring (m)
- G = Shear Modulus of Rigidity of Material.
- d = Wire Diameter (m)
- D = Mean Diameter (m)
- N = Number of active coils (an active coil sweeps one full circle)
What is a high spring rate?
Spring Rate refers to the amount of weight it takes to compress a spring a certain distance. The higher the spring rate, the stiffer the spring. Some springs are non-linear, which typically means the spring gets stiffer the more you compress it.
What does higher spring rate mean?
What should the spring rate be on a drag race car?
Springs should typically be compressed 25-30% of the free length when supporting the weight of the vehicle. Drag race cars will normally use a lighter rate spring (about 30%) to promote weight transfer while a street car will use a firmer rate spring (about 25%). ASf/ (spring free length x 0.25) = Firmer Spring Rate
What should the spring rate be on a coilover?
The angle that the coilover assembly is installed at has a large effect on what the spring rate will need to be. The greater the angle of the spring, the stiffer it will need to be to support the weight of the car. A coilover with a 10” 225 lb. spring that is installed at 0° straight up and down (90° from the axle centerline) will support 1450 lbs.
How to calculate the spring rate for a car?
If you’re guessing blindly, use a 55%/45% weight balance; however, it is much more appropriate to measure your car. Example corner weight using weight balance: To get the corner weight of your car, take an example total weight of 3800 lbs and multiply it by the front end weight bias. ex: 3,800 x 55% (front end weight balance) = 2,090.
Why do you need shocks and springs in a car?
One purpose of the shocks and springs is to make the chassis stable and predictable while driving over bumps or ruts. If the shock/spring combination is too stiff, the tire can be pulled off the track surface for a period of time, eliminating that tire’s traction ability.