It had been to start with launched in 1939 for vehicles. It includes the fluid coupling and 3 planetary gears. They collectively make three forward and one particular reverse pace. There isn't any clutch for engagement and disengagement with the motor. I’m Understanding Mech and greatly enjoy your info. https://troycbzxt.therainblog.com/32720453/top-latest-five-gearbox-urban-news