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then there's this, indicating Zytel as a higher performance polymer: http://www2.dupont.com/Plastics/en_US/assets/images/uses_apps/DPM13_19015-Polymer-Pyramid_580x350_1.jpg

Thanks for the replies. Yes, btrueblood, we will eventually replace the bearing component with a metal collar. Or replace the whole cam piece with metal and plasticize the spring's contact point...The hope is that in the meantime, we can use a simple material change as a temporary upgrade. Pud...

Hello engi-tips plastics experts. Long-time reader, second time poster. I am working on possible improvements to an injection molded plastic piece that is used in a riveted caster wheel assembly. The function of the piece is as follows: The piece is essentially a cam with a collar. Here, the...

The main problem for this design is finding high strength coupled with high flexibility (low stiffness). So I want flexural strength and section modulus to be high, and young's modulus and moment of inertia to be low. With Fb/E being material properties and S/I being section properties. It...

as for glass-filled plastics, the data I've seen indicates that glass increases stiffness but does not significantly increase flexural strength, which work against me as I need a lot of elastic deflection in the piece.

Very helpful, thank you. Although the final design may be a ribbed or corrugated section, investing in the mold at this early stage of development is not in the budget...unless there is an easier way to prototype such a section? In the immediate interest of continuing beta testing without the...

Hello all, long time reader first time poster. I am prototyping a sporting goods product that requires a flat cantilever spring approximately 6 inches long. Mounted rigidly, and supporting a rigid bolt at the free end, the "flex zone" between these elements is actually only 2.25" long. I...