Helical wave spring

grabcad

The wave spring has the same travel and force as a normal helical spring but only needs half the space(height). I thought I'd give it a go with SW, maybe not the most elegant modelling methodology but I think it turned out okay, there is some adjustment in the equations but it sometimes falls over maybe someone else could refine it further. Oh and thanks to w.wolf for the right answer from Q & A :)