Quote:
Originally Posted by YCW
What determines the rate is the overall mass of steel, not how many coils there are (according to the Swift technician).
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That technician has no idea what he's talking about! Spring rate is a function of material modulus of elasticity, wire diameter, coil diameter, and number of turns (i.e., how many coils there are). The "mass of steel" is not directly related to spring stiffness. If you reduce wire diameter, you reduce mass and reduce spring rate. If you increase number of coils, you INcrease mass but still reduce spring rate.