Apparatus and method for mechanically providing power to a generator on a continuous rotatable rotor of an x-ray scanner

A system including an x-ray scanner gantry having: a housing; a gantry gear; a rotor; a generator mounted on the rotor; and first and second generator gears connected to or engaged with one or more axles of the generator. The second generator gear is engaged with the gantry gear. A motor rotates the intermediate gear via a motor gear. A second actuator actuates the motor gear to engage the motor with the rotor. A control module operates in first and second modes and: while in the first mode, engages the intermediate gear to the first generator gear via the first actuator to rotate, via the motor gear, the intermediate gear and as a result the first generator gear; and while in the second mode, engage the motor to the rotor via the second actuator to rotate, via the motor gear, the rotor and as a result the second generator gear.