ALCO RS-11 Diesel-Electric Locomotive
The ALCO RS-11 is a diesel-electric locomotive of the road switcher type rated at 1,800 hp (1.34 MW), that rode on two-axle trucks, having a B-B wheel arrangement.
The first three RS-11s were produced by ALCO in February 1956 as a demonstrator set. This locomotive, classified by ALCO as model DL-701, was their first high-horsepower road switcher, intended to be a replacement for the very popular RS-3 road switcher. Featuring a V-12, 1,800 hp (1,300 kW) 251B diesel engine, the RS-11 was ALCO's answer to EMD's very successful GP9. The turbocharged RS-11 accelerated faster, had a higher tractive effort rating and typically used less fuel than the competition. It was also quite versatile and could be found in heavy haul freight as well as passenger service. It was produced in high-nose and low-nose versions. Montreal Locomotive Works built identical units.
While the RS-11 benefited from the increased power and reliability offered with ALCO's new 251B engine, and was arguably a more advanced product than the GP9, its market acceptance was disappointing against the reputation EMD's locomotives had made for superior reliability.
Carolina and Northwestern Railway
Delaware and Hudson
Duluth, Winnipeg and Pacific
Ferrocarril del Pacifico
Ferrocarriles Nacionales de México
Green Bay and Western
Ministry of Communication and Transportation (Mexico)
Monongahela Connecting Railroad
New York, New Haven and Hartford
New York Central
New York, Chicago and St. Louis Railroad
Norfolk and Western
Portland Terminal (Maine)
Seaboard Air Line
Southern Peru Copper Corp.
Southern Pacific Railroad
Toledo, Peoria and Western Railway
ALCO RS-11 Overview
Type and origin
Power type: Diesel-electric
Builder: ALCO, MLW
Build date: February 1956 to June 1961 (Alco) / April 1964 (MLW)
Total produced: 425
• AAR B-B
Gauge: 4 ft 8 1⁄2 in (1,435 mm) standard gauge
Trucks: AAR type B
Wheel diameter: 40 in (1,016 mm)
Minimum curve: 21° (274.37 ft or 83.63 m)
Wheelbase: 39 ft 4 in (11.99 m)
Length: 56 ft 6 in (17.22 m)
Width: 10 ft 1 5⁄8 in (3.089 m)
Height: 14 ft 5 1⁄8 in (4.397 m)
Locomotive weight: 257,300 lb (116,700 kg)
Fuel capacity: 2,000 US gal (7,600 L; 1,700 imp gal)
Prime mover: ALCO 251B
RPM range: 1,000 rpm max.
Engine type: V12 Four stroke diesel
Generator: GE GT 581
Traction motors: (4) GE 752
Cylinder size: 9 in × 10.5 in (229 mm × 267 mm)
Power output: 1,800 hp (1,300 kW)
Tractive effort: 64,325 lb (29,177 kg)
Locale: North America, South America
Classic Streamliners - TRAINCYCLOPEDIA
TPW 400, an RS-11 on display at Illinois Railway Museum, July 16, 2005.
CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=235665
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Text: wikipedia.org. Images: Public Domain; http://www.commons.wikimedia.org (unless otherwise specified) and 17 U.S. Code § 107 fair use. References: Lewis, Robert G. The Handbook of American Railroads. New York: Simmons-Boardman Publishing Corporation, 1951, 2nd Edition 1956. Site Map Contact webmaster HERE.