It had been initial released in 1939 for cars. It is made of the fluid coupling and three planetary gears. They collectively make 3 forward and just one reverse speed. There is not any clutch for engagement and disengagement through the engine. Most transmissions in contemporary cars and trucks https://spencerzndnw.webdesign96.com/34286443/the-smart-trick-of-gearbox-that-no-one-is-discussing