This astounding bit of gearing has appeared on HowStuffWorks prior to. It's possible you'll identify it from the electric screwdriver short article. An automatic transmission consists of two total planetary gearsets folded collectively into 1 ingredient. See How Gear Ratios Get the job done for an introduction to planetary gearsets. https://gearboxauto18405.liberty-blog.com/34272625/the-basic-principles-of-gearbox-auto