This awesome bit of gearing has appeared on HowStuffWorks just before. You may figure out it from the electrical screwdriver article. An automatic transmission is made up of two entire planetary gearsets folded collectively into one ingredient. See How Gear Ratios Do the job for an introduction to planetary gearsets. https://charlieseikk.bloggazzo.com/33213086/top-latest-five-gearbox-auto-urban-news