Common features are listed at the bottom of the Home Page

Power springs, including clock and motor types are made from a strip of tempered steel or suitable alloy, attached to and wound around an arbor and confined in a case or drum. This program produces reliable designs for springs with total turns up to 30, and beyond that, it can be used to produce results that may be used as a guide for finalizing a design in the Spring Analyzer.
The input data includes the maximum torque, total turns, material width and, optionally a percentage of turns for reporting characteristics at a specific number of rotations. The ratio of arbor diameter to material is set to a default value of 20 and this can be edited

Pressing the Calculate button on the Power Spring Design form produces the output screen. Values calculated by the program and reported here include the spring material thickness and effective length, the case inside diameter, the arbor diameter, the ratio of length to thickness and the maximum stress. The number of turns, the torque and the stress are tabulated for 20, 40, 60, 80 and 100 percent of the total turns. The equivalent values for a selected percentage of total turns is also reported.

The Power Spring Analyst data entry form accepts values for the arbor diameter, case inside diameter and the material width, thickness and effective length.. You can also select a percentage of total turns for calculation of results at that point.

The output screen that appears after the Calculate button is pressed shows the input data and the calculated maximum torque, maximum turns, ratio of arbor diameter to material thickness, percentage of available space occupied by the material, material length/thickness ratio and the estimated life at maximum and selected percent rotation.