It was well-liked during the early 20th century for its simplicity of use when compared with entirely guide gearboxes of that time.  An unsynchronized manual transmission, typically known as a "crash box," is one of the earliest types. It lacks synchronizers, which implies gears Never immediately match velocity during shifts. https://arthurttrmh.theideasblog.com/34640048/the-smart-trick-of-automobile-gearbox-that-nobody-is-discussing