Baldwin 4-8+8-4-750/8-DE

The Baldwin 4-8+8-4 750/8DE1 was the Baldwin Locomotive Works' first attempt at building a road diesel locomotive. The trucks were configured in a 2-D+D-2 wheel arrangement. Only a single test unit was built.

Baldwin 4-8+8-4-750/8DE1
Type and origin
Power typeDiesel-electric
BuilderBaldwin Locomotive Works
Serial numberBLW 64639, also 4-8+8-4-750/8DE1
Model4-8+8-4-750/8DE1
Build dateMay 1943
Total produced1
Specifications
Configuration:
 • AAR2-D+D-2
 • UIC(2′Do)+(Do2′)
Gauge4 ft 8+12 in (1,435 mm)
Wheel diameter40”
Length91 ft 6 in (27.89 m)
Loco weight685,000 pounds (311,000 kg)
Fuel capacity2,850 US gal (10,800 l; 2,370 imp gal)]
Prime moverEight 8LV (but only four installed)
RPM range1050 maximum
Engine typeFour-stroke diesel
AspirationSupercharger
GeneratorWestinghouse YG37B
Traction motorsWestinghouse 370A (8)
CylindersV8 (×8 planned)
TransmissionElectric
Gear ratio25:54
Loco brakeStraight air
Train brakesAir
CouplersAAR Type E knuckle
Performance figures
Maximum speed120 mph (190 km/h)
Power output6,000 hp (4.47 MW) (with all 8 engines installed)
Tractive effort45,000 lbf (200.17 kN) at 39 mph (63 km/h)
Career
LocaleNorth America

In 1943 Baldwin built an experimental "Centipede" as a demonstrator unit, which was assigned road #6000. The uniquely styled unit, with its upright, aggressive prow, was to be powered with eight model 408-series V8 8LV diesel engines (which would have produced 6,000 horsepower (4,500 kW)), though only four were actually installed. The locomotive's running gear design reflected Baldwin steam and electric locomotive practice. The carbody rode on two massive articulated cast steel half-frames cast by General Steel Castings, linked at the middle with a hinged joint. Unpowered four-wheel trucks at each end guided the locomotive through curves for stability at speed.

The locomotive utilized unique "power packages", each consisting of an engine, generator, radiator, electrical cabinet, and other auxiliaries. These power packages could be changed out in as little as 20 minutes. While the locomotive was designed to carry 8 of these power packages, only 4 were ever installed. Each engine powered a single axle of the locomotive.

The lone unit was tested on the Pennsylvania Railroad, Baltimore and Ohio, and Reading, but dismantled soon after production, and its running gear was used for the one of a kind prototype #4500 Seaboard Air Line 3,000 horsepower (2,200 kW) "Centipede".

ReferencesEdit

  • Kirkland, John F. (1994). The Diesel Builders (Volume 3, Baldwin Locomotive Works). Interurban Press. ISBN 0-916374-93-9.
  • Pinkepank, Jerry A. (1973). The Second Diesel Spotter's Guide. Kalmbach Publishing Co. ISBN 0-89024-026-4.
  • Dolzall, Gary W. & Dolzall, Stephen F. (1984). Diesels From Eddystone: The Story of Baldwin Diesel Locomotives. Kalmbach Publishing Co. ISBN 0-89024-052-3.