Baldwin DR-12-8-1500/2

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Baldwin DR-12-8-1500/2
"Centipedes" of the Pennsylvania Railroad are seen here pulling the Gotham Limited around Horseshoe Curve in November 1953. All PRR units were semi-permanently coupled back-to-back, in pairs.
Type and origin Power type Diesel-electric Builder Baldwin Locomotive Works Model DR-12-8-1500/2 Build date December 1945 – July 1948 Total produced 54
Specifications Configuration: ​  • Whyte 4-8-0+0-8-4DE  • AAR 2-D+D-2  • UIC (2′Do)+(Do2′) Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Length 91 ft 6 in (27.89 m) Loco weight 595,000 lb (269,900 kilograms) Fuel capacity 3,500 US gal (2,900 imp gal; 13,000 L) Prime mover Two 608SC Engine type Four-stroke diesel Aspiration Turbocharger Displacement 15,832 cu in (259.44 L) (× 2) Generator Westinghouse 471A Traction motors Westinghouse 370F (8) Cylinders 8 (× 2) Transmission Electric Gear ratio 15:63 (65 mph) 19:60 (82 mph) 21:58 (93.5 mph) 22:57 (100 mph) 23:56 (106 mph) 25:54 (120 mph) Loco brake Straight air Train brakes Air
Performance figures Maximum speed 65–120 mph (105–193 km/h) Power output 3,000 hp (2,240 kW) Tractive effort 102,500 lbf (455.94 kN)
Career Operators Pennsylvania Railroad, Seaboard Air Line, National Railways of Mexico Class PRR- BP60 NdeM- DE-12 Locale North America Disposition All scrapped

The Baldwin DR-12-8-1500/2 (known informally as the Centipede) was the Baldwin Locomotive Works' first serious attempt at a production road diesel locomotive. The Baldwin type designation was 'DR-12-8-1500/2,' meaning Diesel Road locomotive, with 12 axles (8 of which were driven), and two engines of 1,500 horsepower (1,100 kW) each. The trucks were configured in a 2-D+D-2 wheel arrangement. The nickname came from the numerous axles set in a nearly unbroken line, much like the legs of a centipede.