Nicholas Roosevelt (inventor) 74-gun ships. In 1797, with Robert R. Livingston and John Stevens, he agreed to build a boat on joint account, for which the engines were to be constructed by Roosevelt, and the propelling agency was to be that planned by Livingston. The experiment failed, the speed attained being only equivalent to about in still water. On September 6, 1798, Roosevelt described and earnestly recommended to Livingston a vertical wheel, which is the first practical suggestion of the combination that made steam navigation a commercial success, although four years later Robert Fulton believed that chains and floats were alone to be
O.S. Engines Engines' main competitor for both two- and four-stroke model engines is Yamada Engines (YS), also designed and produced in Japan, with the Saito Seisakusho firm being a stronger rival than the YS firm, in volume production of popular four-stroke model engines. O.S. has also produced model steam locomotives. O.S. Engines O.S. Engines is a Japanese model engine manufacturer. The company was founded in 1936 by machinist Shigeo Ogawa ("Ogawa Shigeo" in the Japanese surname-first tradition) for the production of model steam engines. The name of the firm could have either originated from the traditional Japanese family-name-first tradition being the source