As opposed to handbook gearboxes that demand handbook shifting and automatic gearboxes that select gears based upon different inputs, epicyclic gearboxes depend on the engagement and disengagement of gears throughout the planetary process to realize distinct gear ratios. A handbook transmission necessitates the driving force to manually choose the gears[6] https://automobilegearbox28394.snack-blog.com/34114568/not-known-facts-about-automobile-gearbox