It had been first launched in 1939 for automobiles. It includes the fluid coupling and 3 planetary gears. They collectively make a few forward and a person reverse velocity. There is not any clutch for engagement and disengagement from the motor. Most transmissions in modern vehicles use synchromesh to https://gearbox19630.mdkblog.com/39621479/the-2-minute-rule-for-gearbox