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The EMD F7 is a model of 1,500-horsepower (1,100 kW) diesel-electric locomotive produced between February 1949 and December 1953 by the Electro-Motive Division of General Motors (EMD) and General Motors Diesel (GMD).
Diesel Electric locomotives (DEs) develop their rated HP at any speed whereas steam develops it at only one speed. Why? Let us look at the physics.
6 lip 2006 · Maybe “F” should stand for Face. It’s the famous “bulldog nose” that did it. It hit the road with FT demonstrator quartet 103, “the diesel that did it”-i.e., sealed the steam locomotive’s doom with its 1939-40 coast-to-coast 83,764-mile, 20-railroad, 35-state tour.
The All-American F7 defined railroading during the 1950s; nearly every notable Class 1 operated at least one and many rostered dozens, or even hundreds, of these locomotives. When one pictures Electro-Motive's classic streamlined diesels, the F7 most often comes to mind.
17 sty 2024 · The EMD F7 is the quintessential classic post-World War 2 American train industry diesel-electric locomotive built to the tune of some 3,856 total units from the period spanning February 1949 to December 1953, continuing the line of successful F-Unit locos manufactured by EMD.
The F-units were the most successful "first generation" road (main line) diesel locomotives in North America, and were largely responsible for superseding steam locomotives in road freight service. Before that, diesel units were mostly built as switcher locomotives, and only used in rail yards.
The EMD F7 is a model of 1,500-horsepower (1,100 kW) diesel-electric locomotive produced between February 1949 and December 1953 by the Electro-Motive Division of General Motors (EMD) and General Motors Diesel (GMD).
