Abstract: Motion of an apparatus having reciprocal linear motion of an input member is converted into alternating rotary motion of a drive member such as a drive shaft or a drive gear. Additionally, a system is taught which uses linear motion, oscillating motion and rotational motion or any two or three with conversions and is adapted for using kinetic and electrical energy sources together and interchangeably. The system may be adapted for vehicular use. In one embodiment a two-cycle internal combustion engine is used in combination with the apparatus.