Baldwin DRS-4-4-1000

4 ft 8+1⁄2 in (1,435 mm) standard gaugePrime mover606SCRPM range625 rpm maximumEngine typeStraight-6 Four-stroke dieselAspirationTurbocharger Elliott Company BF34 (125 hp)Displacement1,979 cu in (32.43 L) per cylinder
11,874 cu in (194.58 L) totalGeneratorWestinghouse YG42ATraction motorsWestinghouse 340F (4)Cylinders6Cylinder size12+3⁄4 in × 15+1⁄2 in (324 mm × 394 mm)TransmissionElectricLoco brakeStraight airTrain brakesAir

Performance figures
Power output	1,000 hp (750 kW)

Career
Operators	Pennsylvania Railroad, Esquimalt and Nanaimo, Penn Central
Locale	North America

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 #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 #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.

References

• "The Esquimalt and Nanaimo Railway (ENR/E&N)". ROCArchives. Archived from the original on 27 January 2006. Retrieved January 15, 2006.
• Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, Wisconsin: Kalmbach Publishing. ISBN 978-0-89024-026-7.

External links

• Baldwin DRS4-4-1000 & RS-12 Roster
• Preserved Baldwin and Lima Locomotives