Planetary gear

Design of the cycloidal disc with an ordinary cycloid

Construction of the cycloidal disc of a cycloidal drive

Learn more about the design of the cycloidal disc of a cycloidal drive in this article. https://youtu.be/BRtpldwicv4 Design of the cycloidal disc Cycloidal disc with ordinary cycloid As already explained in the article "Operating principle",...
Velocity distribution on the rotating planet gear with moving carrier

Willis equation for planetary gears

Learn more about the Willis equation applied to planetary gears in this article. https://youtu.be/oXD9uJb_TOg In the article Derivation of the Willis equation, the fundamental equation for epicyclic gears was derived in the following...
Carrier of a three-speed gear hub

How does a three-speed gear hub work?

Learn more about the structure and function of the planetary gear in a three-speed gear hub in this article. https://youtu.be/8R3xzAdxYIc Assembly and function The figure below schematically shows the assembled components of a three-speed...
Relationship between the pitch circle diameters and the number of teeth

Derivation of Willis equation (fundamental equation of planetary gears)

The Willis equation describes the motion of the individual gears of a planetary gearbox (epicyclic gear). https://youtu.be/oXD9uJb_TOg Superposition of motions The change in speed of planetary gearboxes are no longer as easy to understand...