The Buckeye four-cycle double acting engine affords a better idea of their construction. Huge valve assemblies were located at each end of the individual cylinders. These were operated from a single lay shaft geared to the crank. Mammoth castings were required for the frame and bedplate to insure adequate strength and rigidity. No specific weights for a given model are available but shipping these huge engines to their destination was a proposition requiring several railroad cars. Single acting, four-cycle, tandem engines were another Buckeye option in addition to the many other models. A 1908 catalog would illustrates this style. Buckeye engines used water cooled exhaust valves. Each set of intake and exhaust valves was operated by a single eccentric. The fantail-type crank discs were fabricated from solid steel and the connecting rods were forged from open hearth steel. Larger styles used a main crosshead, an intermediate crosshead and a tail rod crosshead. The pistons were floated in the cylinders and carried entirely by the crossheads.