The Baldwin Locomotive Works logo on Chesapeake Western Baldwin DS-4-4-660 #662 Diesel engine at The Virginia Museum of Transportation in Roanoke, Virginia. The Baldwin DS-4-4-660 debuted in 1946 and was produced through May of 1949. Using a model 606 NA prime mover developed specifically by Baldwin (although the engine could not have been built without the help of subsidiary the I.P. Morris & De La Vergne company purchased in 1931) the DS-4-4-660 featured the standard four-axle, B-B truck setup. As with almost all of its diesel models, Baldwin contracted with Westinghouse to supply it for the locomotives' internal components such as traction motors, generators and air equipment (brakes and compressors). Additionally, the DS-4-4-660 offered tractive effort ratings of 49,625 pounds starting and 34,000 pounds continuous. In the DS-4-4-660 model the DR referred to Diesel Road unit; the first number, 4, was the designation of four overall axles; the second number, 4, was the designation of four powered traction motors; and 660 stood for the horsepower rating. They sold a total of 140 of this model of locomotive. These locomotives could be found all across the US with industries, shortlines and smaller Class 1 railroads buying from 1 to 6 of this model. The Pennsylvania RR bought 99 and was the only one to buy a large number of this model making it a success.
July 22nd, 2018
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