ALCO RS-11

ALCO RS-11
TPW 400, an RS-11 on display at Illinois Railway Museum, July 16, 2005.
Type and origin Power type Diesel-electric Builder ALCO, MLW Model RS-11 Build date February 1956 to June 1961 (Alco) /November 1957-1 unit, June 1963 to April 1964 (MLW) Total produced 431
Specifications Configuration: ​  • AAR B-B Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge Trucks AAR type B Wheel diameter 40 in (1,016 mm) Minimum curve 21° (274.37 ft or 83.63 m) Wheelbase 39 ft 4 in (11.99 m) Length 56 ft 6 in (17.22 m) Width 10 ft 1+5⁄8 in (3.089 m) Height 14 ft 5+1⁄8 in (4.397 m) Loco weight 257,300 lb (116,700 kg) Fuel capacity 2,000 US gal (7,600 L; 1,700 imp gal) Prime mover Alco 251B RPM range 1,000 rpm max. Engine type V12 Four stroke diesel Aspiration Turbocharger Generator GE GT 581 Traction motors (4) GE 752 Cylinders 12 Cylinder size 9 in × 10.5 in (229 mm × 267 mm)
Performance figures Maximum speed 70–85 mph (113–137 km/h) Power output 1,800 hp (1,300 kW) Tractive effort 64,325 lb (29,177 kg)
Career Locale North America South America

The ALCO RS-11 is a class of diesel-electric locomotive rated at 1,800 hp (1.34 MW), that rode on two-axle trucks, having a B-B wheel arrangement. This model was built by both Alco (327 units) and Montreal Locomotive Works (99 units). Total production was 426 units.^[1]