FactoryX, that is a sick graphic of the operating principals of a Two-Stroke engine! Love it! Anyway to share that little video? Way back in 1985 when Two-Strokes were king, I was working for Hi-Torque Publications and did a 3 part series on the differences between Two-Strokes and Four-Strokes, much harder to explain the four phases of a Two-Stroke with illustrations in a Magazine.