These used synchronizers to match gear speeds, permitting for smoother shifts and less difficult driving. The mid-twentieth century observed the introduction of computerized transmissions.  The principle shaft is splined so gears could go; the two interact and disengage in a much better way. The neutral gear could be the standpoint https://automobile-gearbox31628.prublogger.com/33288233/not-known-facts-about-automobile-gearbox