On the list of manual transmissions is the Wilson pre-selector, launched in 1930 used as being a planetary gear process to preselect gear ratios by running a small lever to the steering section.  The real key part of an automatic gearbox could be the planetary equipment set. It's a Solar https://gearbox-auto10852.blog-mall.com/34391872/gearbox-auto-no-further-a-mystery