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Published on Mar 8, 2009
Another unusual and excellent engine based on a Comber Rotary design from 1880. The design features a double ended piston with rollers at each end that follow the inside profile of the cam. The cylinder is a one piece unit that rotates with the shaft. Valving at one Bearing admits steam just as one roller starts pushing downhill on the Cam, causing the Cylinder and Shaft to turn. The cylinder is shown transparent to help illustrate the movement of the piston, with end caps removed for clarity.