Most transmissions in modern-day cars and trucks use synchromesh to synchronise the speeds of your enter and output shafts. However, ahead of the nineteen fifties, most vehicles utilised non-synchronous transmissions. It was 1st launched in 1939 for cars. It is made of the fluid coupling and 3 planetary gears. https://deannjhar.estate-blog.com/32972273/not-known-factual-statements-about-gearbox