Flat/parabolic mono-leaf spring design --- where to start? I'm working on a design project and need to figure dimensions, type of material and curvature. Are there any good reference sites that could help me out here? This was not covered in school, lol. I'm basically designing something like the springs on this: http://www.aliexpress.com/store/product/new-fitness-shoes-jumping-shoes-spring-shoes-space-shoes-kangoo-jump-Bounce-Shoes/400707_453863523.html [Broken] but with metal instead of thermo-plastics. Thanks for any tips.