nice render. I'm sure Don would be impressed.
May I suggest holding the outer ring, whilst slowly rotating the inner parts, in a continuous loop?
You can design without engineering, but you cannot engineer without design.
Using Win 10 with Designer 2016/2017 and TurboCAD Pro. Plat. 2018/2019 + Lightworks (64-bit versions) + AnimationLab 5.2.
Windows 10 Pro 1903 (Build 18362.418) 64-bit