It had been initially released in 1939 for cars. It is made of the fluid coupling and 3 planetary gears. They collectively make 3 ahead and just one reverse velocity. There is absolutely no clutch for engagement and disengagement through the engine. Bevel gearboxes have spiral and straight enamel https://gearbox75307.blog-mall.com/34397999/a-secret-weapon-for-gearbox