Originally Posted by
trajectory
Forgot to mention Krupps spring steel... Had a good reputation, not sure exactly what it was composed of but I think it was a generic name for a range of products for varying purposes.
As to calculating any theoretical values for springs........yikes, modulus, stress, strain, % elongation etc etc there are books with pages of calculations & the mathematical derivations of the formulas. Some of its quite interesting but it's heavy going.
Was once told a helical springs were not what I thought they were. I thought they had a constant coil diameter. Apparently, so I was told, a helical spring has a coil diameter that reduces in one direction over its length. Apparently somewhat like the thread on an old fashioned wood screw, anyone else heard of that?