This amazing piece of gearing has appeared on HowStuffWorks ahead of. You could possibly acknowledge it from the electrical screwdriver posting. An automatic transmission has two entire planetary gearsets folded collectively into 1 element. See How Gear Ratios Perform for an introduction to planetary gearsets. S normally means Sport manner. https://johnnyzflqp.jaiblogs.com/61148738/detailed-notes-on-gearbox-auto