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  1. BillaNichols

    Determine spring rates based on natural frequency

    Is the correct? Below is the calculation I used to determine my spring rates for auto cross racing. My target natural frequency is 2.2 in the front and 2.5 in the rear. The calculation is three steps, finding the wheel rate, find the wheel rate in series with the spring rate of the tire and...
  2. BillaNichols

    How to calculate the ride height from spring free length?

    Are these assumptions correct? I want to change the springs on my 2008 Saturn Sky to increase the natural frequency (NF) and lower the center of gravity (CoG). The stock front spring has a spring rate of 128 lbf/in, a free length of 15 inches and a compressed length of 10 inches. The spring...

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