Paul Bennett, of CA, designed and built this opposed water-cooled twin engine in 1969 for his model boat. An article (with drawings) documenting his effort was published in Model Engineer magazine in January 1972. It has a 1-inch bore with a 3/4-inch stroke, double throw crank, and runs on gasoline with spark ignition. The engine requires manual lubrication of the rockers and pushrods, and oil must be added to the crankcase before operation. It is completely machined from aluminum and steel bar stock, and weighs 3 lbs. Courtesy of Margie Bennett.
Bennett Water-Cooled Opposed Twin Engine
