ALCO RSD-12
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Ferrocarril del Pacifico 504 in Nogales, Sonora, Mexico, in March 1979 | |||||||||||||||||
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The ALCO RSD-12 was a C-C diesel-electric locomotive rated at 1,800 horsepower (1.34 MW). 171 locomotives were produced. They were used in much the same manner as its four-axle counterpart, the ALCO RS-11, although the six-motor design allowed for better tractive effort at lower speeds.