A motor includes a base plate and an armature having two or more arms mounted to the base plate for rotation about an axis. At least two powerstroke solenoids are positioned on each arm for applying force effecting first rotational motion of the armature. At least one reset solenoid is positioned on each arm for applying force effecting second rotational motion of the armature opposite the first rotational motion. Means are provided for sequentially applying current to the powerstroke solenoids and then to the reset solenoids to effect an oscillating motion of the armature. Further means are provided for transferring the first rotational motion to a disk cylinder rotatably mounted to the base plate for rotation about the axis, but for restraining the transfer of the second rotational motion to the disk cylinder.