Abstract: Propulsion apparatus comprises a rotating drive member having an axis of rotation, and a reversible motor coupled to the rotating drive member to rotate the drive member in first and second directions is described. A mounting arrangement is configured to pivotally mount the rotating drive member onto a toy about a mount axis, and at least one pivot stop mechanism is provided. Operation of the reversible motor rotates the drive member in the first direction causing the drive member to pivot about the mount axis to a first position defined by a pivot stop mechanism and provide a propulsion force in a first propulsion direction. Operation of the reversible motor to rotate the drive member in the second direction causes the drive member to pivot about the mount axis to a second position defined by a pivot stop mechanism and provide a propulsion force in a second propulsion direction.