This planetary （also known as epicyclic） gearset model represents the core mechanism of a 6-speed automatic transmission. The design features two sets of sun gears and planet gears, working together to provide six forward speeds and reverse. Widely used in modern car transmissions, planetary gearsets are known for their compactness and versatility. This model demonstrates how the gears interact to deliver varying speeds, showcasing the functionality of a car’s transmission system.
