Can anyone give me the formulae for a spiral spring? (that's the sort that looks like an open clock spring made from a number of turns of flat strip).
Or better still, steer me to some affordable software that would do it. I have looked at 'Advanced spring design' from UTS but I can't afford it! It's also worse than that, it's on annual subscription so having paid a lot for it, you then have to do that every year!!
Thanks for any help.