A driving mechanism of a bicycle free-coaster hub includes a driving assembly, a clutch assembly, an epicyclic gear assembly, a resisting member, and forward drag and reverse drag members. The clutch assembly includes an output clutch unit disposed inner the hub and an input clutch unit disposed with the driving assembly to form a clutching or engaging state with the output clutch unit. The epicyclic gear assembly includes a sun gear coupled with the input clutch unit, a ring gear mounted on the hub, a planet gear carrier having a plurality of planet gears engaged with the ring gear and the gear portion of the sun gear. The resisting member is disposed between the sun gear and the hub axle. The forward drag member is disposed between the ring gear and the sun gear. The reverse drag member is disposed between the planet gear carrier and the hub axel.

A driving mechanism of a bicycle free-coaster hub includes a driving assembly, a clutch assembly, an epicyclic gear assembly, a resisting member, and forward drag and reverse drag members. The clutch assembly includes an output clutch unit disposed inner the hub and an input clutch unit disposed with the driving assembly to form a clutching or engaging state with the output clutch unit. The epicyclic gear assembly includes a sun gear coupled with the input clutch unit, a ring gear mounted on the hub, a planet gear carrier having a plurality of planet gears engaged with the ring gear and the gear portion of the sun gear. The resisting member is disposed between the sun gear and the hub axle. The forward drag member is disposed between the ring gear and the sun gear. The reverse drag member is disposed between the planet gear carrier and the hub axel.