To change gears, the motorists press the foot pedal that calls up one of the preselected gears, these results in disengaging from the past equipment, and simultaneously the new gear engages. A compound planetary gearset acts like two planetary gearsets mixed. Learn about compound planetary gearsets and an automatic transmissions https://jaredtekml.spintheblog.com/34546278/top-guidelines-of-gearbox-auto