It was first released in 1939 for vehicles. It is made up of the fluid coupling and three planetary gears. They collectively make a few forward and a single reverse speed. There isn't any clutch for engagement and disengagement within the engine. So by locking any one’s equipment, we https://gearbox70233.full-design.com/the-smart-trick-of-gearbox-that-no-one-is-discussing-76202353