Thank you israelkk for responding.
I started with a compression spring we designed and tested and that provided the original wire spec, diameter,
active and total coils, OD and free length.
The goal is to decrease the spring rate by 25% for 25% of the travel and increase the spring rate by 40%...
I have modeled a variable pitch spring in ProE. I am not proficient in designing these types of springs so I was hoping someone could help in specifying the proper technique in defining the spring on a drawing so that a spring vendor could duplicate the design. Also is there an equation for...
