Sometime in 1925 when I was thirteen years old, my older brother and I were sitting on the floor of his garage, putting together a motorcycle to become my means of transportation. Suddenly he said, “Jim, figure out a way to make the pistons go around in a circle.”I would have forgotten all about this, had I not known that he had reworked the single cylinder engine of an Indian Junior Scout motorcycle for his ninety pound step-daughter to ride in the races, in the desert above the City of San Bernardino Calif. She was continually beating the Harley-Davidson motorcycles. The pistons in “The Codco engine” of, “The Codco low pressure gas driven engine operating system,” go around in a circle.