This awesome piece of gearing has appeared on HowStuffWorks just before. You could possibly identify it from the electrical screwdriver write-up. An automatic transmission is made up of two complete planetary gearsets folded collectively into one ingredient. See How Equipment Ratios Perform for an introduction to planetary gearsets. Based on https://augustdlnpp.is-blog.com/40664848/how-gearbox-auto-can-save-you-time-stress-and-money