One of many guide transmissions would be the Wilson pre-selector, launched in 1930 employed like a planetary gear technique to preselect gear ratios by working a little lever about the steering area.  For most automobiles, there are two principal types of gearboxes: guide and automatic. Handbook gearboxes are the ones https://gearbox-auto49360.blogdanica.com/33745910/the-best-side-of-gearbox-auto