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The EMD SD7 is a model of 6-axle diesel locomotive built by General Motors Electro-Motive Division between May 1951 and November 1953. It had an EMD 567B 16- cylinder engine producing 1,500 horsepower (1.12 MW) for its six traction motors.
The Southern Pacific (reporting mark SP) ... 1518 , former EMD demonstrator 990 and first SD7 built, located at the Illinois Railway Museum, Union, Illinois;
The first diesel on the Peninsula Commute ran on September 28, 1953, using SP Locomotive No. 5325, an EMD SD7 equipped with a steam boiler; it left the shortly thereafter, as the SD7 was unable to match the performance of the 4-6-2 steam locomotives then being used for off-peak and weekend service. [54]
Most of these locomotives were purchased or leased from the SP&S's parent roads Great Northern Railway and Northern Pacific Railway. The 4-8-4 Northerns and 4-6-6-4 Challengers were purchased new. This roster groups steam locomotives by their wheel arrangement and the railroad's designated class.
Two were rebuilt from business cars to track geometry cars: #80 (renumbered from #43) Rio Grande River (ex-SP 3700) and #87 (renumbered from #42) Skagit River (ex-SP 3702). 3734, 3740, 3744, 3745 Pullman-Standard Gallery: Converted to "Ultra Dome" cars and in service with Princess Tours. [34] [35] 4300 St. Louis Car Company postal storage
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With a new computer software for the on-board computer and one inverter per axle (or "P6"; EMD named it "Individual Axle Control") - unlike most of previous EMD locomotives that use one inverter per truck, the SD70ACe-T4 is capable of generating 200,000 pounds-force (890 kN) of starting tractive effort, and 175,000 pounds-force (780 kN) of ...