This amazing piece of gearing has appeared on HowStuffWorks prior to. You may understand it from the electric screwdriver short article. An automatic transmission incorporates two entire planetary gearsets folded alongside one another into one element. See How Equipment Ratios Get the job done for an introduction to planetary gearsets. https://gearbox-auto96294.dreamyblogs.com/34508429/the-smart-trick-of-gearbox-auto-that-no-one-is-discussing