Canadian Pacific Railway No. 8010.

(Can't Undo at the English-language Wikipedia, CC BY-SA 3.0 <>, via Wikimedia Commons)

Baldwin logo, blue & white.


The Baldwin DRS-4-4-1000 was a diesel-electric road switcher produced by the Baldwin Locomotive Works from July, 1948–March, 1950. The units featured a 1,000 horsepower (750 kW), six-cylinder prime mover, and were configured in a B-B wheel arrangement mounted atop a pair of two-axle AAR Type-B road trucks, with all axles powered. They had a cast steel frame. The units were configured to normally run with the long hood in the forward position.

Only 9 were built for American railroads, with another 13 manufactured in January and February, 1949 by the Canadian Locomotive Company for the Esquimalt and Nanaimo Railway, the first railroad in Canada to dieselize its locomotive fleet. The DRS-4-4-1000 was (in most cases) visually indistinguishable from its 1,200 horsepower (890 kW) successor, the RS-12. Only one intact example of the DRS-4-4-1000 is known to exist today (former CPR No. 8000), and is currently on display in Squamish, British Columbia.


Units produced by Baldwin Locomotive Works (1948–1950)

Railroad Quantity Road numbers Notes
Pennsylvania Railroad 6 5591–5594, 9276, 9277 to Penn Central Nos. 8300-8305 in 1968
Tennessee Central Railway 3 75–77

Units produced by the Canadian Locomotive Company (1949)

Railroad Quantity Road numbers
Canadian Pacific Railway 13 8000–8012 (units worked the Esquimalt and Nanaimo Railway) 8000 preserved and on display.

Baldwin DRS-4-4-1000 Overview

Type and origin
Power type: Diesel-electric
Builder: Baldwin Locomotive Works
Model: DRS-4-4-1000
Build date: July 1948 —March 1950
Total produced: 22
​• AAR B-B
Gauge: 4 ft 8+1⁄2 in (1,435 mm) standard gauge
Prime mover: 606SC
RPM range: 625 rpm maximum
Engine type: Straight-6 Four-stroke diesel
Aspiration: Turbocharger Elliott Company BF34 (125 hp)
Displacement: 1,979 cu in (32.43 L) per cylinder; 11,874 cu in (194.58 L) total
Generator: Westinghouse YG42A
Traction motors: Westinghouse 340F (x 4)
Cylinders: 6
Cylinder size: 12+3⁄4 in × 15+1⁄2 in (324 mm × 394 mm)
Transmission: Electric
Locomotive brake: Straight air
Train brakes: Air
Performance figures
Power output: 1,000 hp (750 kW)
Operators: Pennsylvania Railroad, Esquimalt and Nanaimo, Penn Central
Locale: North America