Suspension Worksheet
In order to determine a basic spring setup, two important inputs are required: Wheel Rate and SUSPENSION FREQUENCY.
Wheel Rate is the actual rate of a spring acting at the tire contact patch. This value is measured in lbs/inch or N/mm, just as spring rate is. The wheel rate can be determined by using the formula below. See step 2.
SUSPENSION FREQUENCY: refers to the number of oscillations or “cycles” of the suspension over a fixed time period when a load is applied to the vehicle. See step 3.
In order to determine Wheel Rate and SUSPENSION FREQUENCY, you must first determine Motion Ratio. A different formula is needed for the type of suspension your race vehicle utilizes, A-arm or Beam axle. See step 1. Please take into consideration the Angle Correction Factor (shown in step 1) in your computation.


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