ALCO RSD-12

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ALCO RSD-12
ALCo RSD-12 (9194229140).jpg
Ferrocarril del Pacifico 504 in Nogales, Sonora, Mexico, in March 1979
Type and origin
Power type Diesel-electric
Builder American Locomotive Company
Montreal Locomotive Works
Model RSD-12
Build date April 1956 – March 1963
Specifications
AAR wheel arr. C-C
Gauge 4 ft 8 12 in (1,435 mm)
Prime mover Alco 251B
Engine type Four-stroke diesel
Aspiration Turbocharged
Cylinders V12
Performance figures
Power output 1,800 horsepower (1,300 kW)

The ALCO RSD-12 was a diesel-electric locomotive of the road switcher type rated at 1,800 horsepower (1.34 MW), that rode on three-axle trucks, having an C-C wheel arrangement.

Used in much the same manner as its four-axle counterpart, the ALCO RS-11, though the six-motor design allowed better tractive effort at lower speeds.

Original buyers[edit]

Railroad Quantity Road numbers Notes
Chesapeake and Ohio Railway
10
6700–6709
Renumbered 2007–2016
Lake Superior and Ishpeming Railroad
4
1801–1804
New York, Chicago and St. Louis Railroad (“Nickel Plate Road”)
9
325–333
to Norfolk and Western Railway
Pennsylvania Railroad
25
8655–8679
to Penn Central 6855–6879; to Conrail
Southern Pacific Company
21
7000–7020
Renumbered 2950–2970
Ferrocarril del Pacífico
19
1502–1508, 509–520
Ferrocarriles Nacionales de México
73
7400–7472
Companhia Siderúrgica Nacional (Brazil)
10
3501–3510
Built by MLW, 1,600 mm (5 ft 3 in) Irish gauge; to RFFSA pt:ALCo RSD-12
Total 171

See also[edit]

References[edit]

  • Komanesky, John et al. The Diesel Shop. Retrieved July 3, 2008
  • Pinkepank, Jerry A. (1973). The Second Diesel Spotter’s Guide. Milwaukee, WI: Kalmbach Publishing Company. pp. pp.257–258. ISBN 0-89024-026-4.