Abstract: A stepless transmission system with a powering input shaft drivingly connected to a first sun gear, the first sun gear surrounded by a first planet gear carrier containing a number of planet gears disposed in a peripheral segment thereof so as to drivingly engage the first sun gear, and a first ring gear disposed about the first planet gear carrier so as to engage the first set of planet gears along an interior drive surface of the first ring gear such that regulated movement of the first ring gear controls movement of the first planet gear carrier that results from rotation of the input shaft and accordingly first sun gear. Additionally, the system includes a second sun gear surrounded by a second planet gear carrier, with a second set of planet gears rotatably disposed therein, the second set of planet gears being surrounded by a second ring gear that is actually connected with the first planet gear carrier such that rotation of the first planet gear carrier correspond rotation of the second ring gear.