To provide a drive system capable of reducing torque shock in the drive system having a one-way clutch.

A drive system 1 is equipped with an internal combustion engine 10 having a crankshaft 12 and a transmission 30 for shifting gears for rotation of input axis 51 connected to the crankshaft 12 and transmitted to an output axis 71, and each of a plurality of transmission units of the transmission 30 is equipped with fulcrum in an input side rotating with the input axis 51 even when eccentricity from the axis of the input axis 51 is variable, a one-way clutch 60 connected to the output axis 71, and a connecting rod with one end connected to the fulcrum in the input side and the other end connected to the fulcrum in the output side of the one-way clutch 60 so as to be swingable. In addition, the internal combustion engine 10 and the transmission 30 are phase-set such that a point balancing the engine torque of the internal combustion engine 10 and the friction falls into a section in which all one-way clutches 60 of the plurality of transmission units are put in non-transmission states.