A Baldwin VO-1000 at the Tennessee Valley Railroad Museum
|Type and origin|
|Builder||Baldwin Locomotive Works|
|Build date||January 1939 – December 1946|
|AAR wheel arr.||B-B|
|Gauge||4 ft 8 1⁄2 in (1,435 mm)|
|Length||48 ft 0 in (14.63 m)|
|Locomotive weight||236,260–242,200 lb (107,165.7–109,860.1 kg)|
|Prime mover||De La Vergne 8-VO|
|Engine type||Four-stroke diesel|
|Aspiration||Naturally aspirated, solid injection|
|Displacement||1,979 cu in (32.43 L) per cylinder
15,831 cu in (259.42 L) total
|Traction motors||DC traction motors|
|Cylinder size||12 3⁄4 in × 15 1⁄2 in (324 mm × 394 mm)|
|Power output||1,000 hp (746 kW)|
|Tractive effort||59,065–60,550 lbf (262.7–269.3 kN)|
|Locomotive brake||Straight air|
The Baldwin VO-1000 was a diesel-electric locomotive (switcher) built by Baldwin Locomotive Works between January, 1939 and December, 1946. The 236,260–242,200 lb (107,170–109,860 kg) units were powered by a normally 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.
There are at least eight intact examples of the VO-1000 that are known to survive today, all of which are owned by museums or historical societies.
In the early 1960s the Reading Company sent 14 of their VO-1000s to General Motors Electro-Motive Division to have them rebuilt to SW900 specifications. These locomotives retained most of their original carbodies, and were subsequently given the designation VO-1000m.
Around the same time, the Elgin, Joliet and Eastern Railway repowered its VO1000s with turbocharged 606SC Baldwin engines taken from its EMD-repowered fleet of Baldwin DT-6-6-2000 locomotives. The work was performed at EJ&E's Joliet, Illinois workshops, and produced a finished unit that featured an offset exhaust stack and left-side turbocharger bulge, the latter being much like that found on Baldwin road switchers. The Atlantic Coast Line Railroad had eight of their VO1000s repowered with EMD 567 series engines, which produced 1,200 hp (890 kW). The Great Northern Railway converted four VO-1000s into transfer cabooses in 1964. The units were stripped to their bare frames (the original trucks and distinctive cast steps were left in place) and fitted with 15-foot (4.6 m)-long steel cabins.
In December 1970 the Atchison, Topeka and Santa Fe Railway (following close on the heels of its highly successful CF7 capital rebuilding program) produced a one-of-a-kind switcher locomotive, known to railfans as the "Beep", at its Cleburne, Texas service facility. The company hoped to determine whether or not remanufacturing its ageing, non-EMD end cab switchers by fitting them with new EMD prime movers was an economically viable proposition. In the end, the conversion procedure proved too costly and only the one unit was modified.
- B&O #412 is operational in Bridgeport, NJ. (ex-USN #19)
- BOMX #32 is preserved at the B&O Railroad Museum in Baltimore, MD. (ex-Canton Railroad Company #32, exx-Patapsco and Back Rivers Railroad #331)
- CW #1107 is preserved at the Museum of the American Railroad in Dallas, TX.
- NC&StL #36 is preserved at the Tennessee Valley Railroad Museum in Chattanooga, TN
- NKP #99 is preserved at the Indiana Transportation Museum in Noblesville, IN.
- NNRM #801 is being restored in Ely, NV.
- OERM #8 is preserved at the Orange Empire Railway Museum in Perris, CA.
- WMRY #132 is preserved at the Hagerstown Roundhouse Museum in Hagerstown, MD.
- Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Milwaukee, WI: Kalmbach Publishing Co. pp. 228–291. ISBN 0-89024-026-4.
- Kirkland, John F. (November 1994). The Diesel Builders volume 3: Baldwin Locomotive Works. Pasadena, California: Interurban Press. ISBN 0-916374-93-9.
- Baldwin VO-1000 Roster
- BLW Demonstrators, Prototypes and Test Beds
- CKD Praha 6S310DR diesel engine, and the Baldwin VO and 600 series engines
- "Diesel Switcher" article from the Fourth Quarter, 1939 issue of Baldwin-Southwark Magazine featuring the Baldwin VO-1000.
- Existing Baldwin VO Model Units
- Preserved Baldwin and Lima Locomotives
- PRR Diesel Locomotive diagrams: Baldwin VO-1000
- VO-1000 — Original Owners