This astounding piece of gearing has appeared on HowStuffWorks in advance of. Chances are you'll understand it from the electric screwdriver posting. An automatic transmission consists of two comprehensive planetary gearsets folded alongside one another into a single part. See How Equipment Ratios Work for an introduction to planetary gearsets. https://gearboxauto28394.blogtov.com/14644085/5-essential-elements-for-gearbox-auto