One of the guide transmissions is the Wilson pre-selector, introduced in 1930 employed as being a planetary gear method to preselect gear ratios by operating a little lever about the steering part.  Clutch Method If you utilize possibly clutch, an annular piston forces The 2 sets of clutch discs into https://gearbox-auto31853.ourcodeblog.com/33962820/gearbox-auto-an-overview