FM continued to produce H16-44s with phase II and III body styles through 1963. A total of 99 units would be produced before production of the “phase I” version ended in December 1952. Several large railroads purchased this model, including Santa Fe, New York Central, Southern and Pennsylvania. The first true production H16-44s were ordered by Jersey Central. MKT 1591 was initially ordered as an H15-44, but was upgraded to 1,600hp during production. The earliest units were externally very similar to the previous H15-44. Before production ended in mid-1949, a total of 35 units had been built, with Jersey Central owning the most units (14 total).īy 1950 other builders had increased the horsepower of their competing road switchers, and FM responded with the 8-cylinder 1,600-horsepower H16-44 model. Three units were then built for Rio Grande before additional demonstrators were produced later in 1948. The first purchaser of the H15-44 was Monon, who quickly bought both the demonstrator and the second unit built in December 1947.
The hood-unit style body included distinctive features such as slightly sloped ends, rounded corners, oval cab-side windows and a raised, rounded headlight base on each end. By September 1947 FM had produced the first H15-44 locomotive in the form of Demonstrator “FM 1500”. In the late 1940s, the design team at Fairbanks-Morse (FM) set out to develop an 8-cylinder 1,500-horsepower all-purpose road switcher using their opposed-piston diesel engine design.
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