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More Trickery — Lowering Spring Rate

by | Jan 1, 2010 | Articles, Springs Magazine

In the Fall 2009 issue, we discussed spring rate and how rate can be increased with a manipulation of pitch. The practice of placing some coils of a helical compression spring closer than others, to increase rate, is a fairly common practice in the industry. But, what if the rate needs to decrease during deflection? There is a way to accomplish that goal.

Figure 1: Basic Rate Plot

Figure 1: Basic Rate Plot

Figure 4

Figure 4

Figure 2

Figure 2

Figure 5

Figure 5

Figure 3

Figure 3

Figure 6: Rate Plot

Figure 6: Rate Plot

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