Among the list of manual transmissions could be the Wilson pre-selector, introduced in 1930 used like a planetary gear process to preselect equipment ratios by operating a little lever over the steering segment.  These gears are observed only on older product cars and trucks. If the transmission is neutral, the https://gearbox-auto65307.webbuzzfeed.com/34295027/the-basic-principles-of-gearbox-auto