In common gearing, the axes of the different gears are fixed, the motion with the gears staying just rotations with regards to their axes. In epicyclic gearing, no less than a single gear not simply rotates, about its individual axis but additionally rotates bodily about some other axis. In https://reidmomjh.tinyblogging.com/the-fact-about-gearbox-that-no-one-is-suggesting-77470492