Torsion Spring Design 1 

Excellent, thank you, I am one of those engineers from another realm (electrical) looking for exactly this sort of instruction, well done and thanks again. PS - Something that really tickled me a few years ago was finding out that the resonant frequency of a coupled spring and mass uses the same formula as that of an inductor and a capacitor (fo = 1/(2pi(LC)^0.5) - physics is cool.

Great info. Expecting follow up videos on torsion spring.thank you..

How do I contact someone for help with torsion spring on a prototype?

I would have thought that most engineers (other than first yer students) would already know this level of calculating these things. Perhaps you should write a textbook.

Thanks but too many assumptions made of what I already know to make this useful or understandable. Tell this to a 10 year old first and get their feedback, then edit and do it again until they understand it fully....then post it on a public forum.