Baldwin VO-1000

Baldwin VO-1000
Baldwin VO-1000s from the Missouri Pacific Railroad in LaGrange, Illinois on October 6, 1962
Type and origin
Power typeDiesel-electric
BuilderBaldwin Locomotive Works
ModelVO-1000
Build dateJanuary 1939 – December 1946
Total produced548
Specifications
Configuration:
 • AARB-B
 • UICBo′Bo′
Gauge4 ft 8+12 in (1,435 mm) standard gauge
Length48 ft 0 in (14.63 m)
Loco weight236,260–242,200 lb (107,165.7–109,860.1 kg)
Prime moverDe La Vergne 8-VO
Engine typeStraight-8 Four-stroke diesel
AspirationNaturally aspirated, solid injection
Displacement1,979 cu in (32.43 L) per cylinder
15,831 cu in (259.42 L) total
GeneratorDC generator
Traction motorsDC traction motors
Cylinders8
Cylinder size12+34 in × 15+12 in (324 mm × 394 mm)
TransmissionElectric
Loco brakeStraight air
Train brakesAir
Performance figures
Power output1,000 hp (746 kW)
Tractive effort59,065–60,550 lbf (262.7–269.3 kN)
Career
LocaleNorth America
Disposition10 Preserved, remainder scrapped

The Baldwin VO-1000 is a diesel-electric switcher locomotive built by the Baldwin Locomotive Works between January 1939 and December 1946. These units were powered by a naturally aspirated eight-cylinder diesel engine rated at 1,000 horsepower (746 kW), and rode on a pair of two-axle trucks in a B-B wheel arrangement. These were either the AAR Type-A switcher trucks, or the Batz truck originally developed by the Atchison, Topeka and Santa Fe Railway as a leading truck for steam locomotives. 548 examples of this model were built for American railroads, including examples for the Army and Navy.

Between June and August 1945 Baldwin supplied 30 Co-Co road locomotives with 8-cylinder VO engines for export to the Soviet Union as their Дб20 (Db20) class.

There are at least eight intact examples of the VO-1000 that are known to survive today, most of which are owned by museums or historical societies. However, a VO-1000m is owned by the Northwestern Pacific Railroad, a local freight carrier based in Schellville, California.