# Suspension Coil Spring Rate Equations Formulas Design Calculator

Automobile Car Truck Design Formulas

Solving for wire diameter.

## Inputs:

spring rate constant (k)
number of active coils (n)
unitless
mean coil diameter (D)
material rigidity or torsional modulus (G)

## Conversions:

spring rate constant (k)
= 0
= 0
pound/inch
number of active coils (n)
= 0
= 0
mean coil diameter (D)
= 0
= 0
inch
material rigidity or torsional modulus (G)
= 0
= 0
pound/inch^2

## Solution:

wire diameter (d)
= NOT CALCULATED

## Other Units:

Change Equation
Select to solve for a different unknown
 spring rate constant rigidity or torsional modulus wire diameter number of active coils mean coil diameter

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By Jimmy Raymond

Contact: aj@ajdesigner.com