One of several guide transmissions is the Wilson pre-selector, introduced in 1930 employed for a planetary gear method to preselect equipment ratios by working a little lever around the steering area.  Gearbox facilitates you to manage how slow or rapidly you want to run your car or truck. For that https://damienmpnmj.webbuzzfeed.com/34295501/the-best-side-of-gearbox-auto