It was initial launched in 1939 for cars. It consists of the fluid coupling and three planetary gears. They collectively make a few ahead and one particular reverse pace. There is absolutely no clutch for engagement and disengagement through the engine. Bevel gearboxes have spiral and straight enamel designs. https://cristiandoxem.blogoscience.com/40055738/the-fact-about-gearbox-that-no-one-is-suggesting