It had been to start with introduced in 1939 for vehicles. It includes the fluid coupling and a few planetary gears. They collectively make a few ahead and a person reverse velocity. There is not any clutch for engagement and disengagement in the engine. Nintendo Change is a trademark https://gearbox56666.develop-blog.com/40760678/how-much-you-need-to-expect-you-ll-pay-for-a-good-gearbox