ALCO RS-1

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ALCO RS-1
DSSA #101 of the Lake Superior Railroad Museum near French River, Minnesota
Type and origin Power type Diesel-electric Builder American Locomotive Company Montreal Locomotive Works Model RS-1 Build date March 1941 – March 1960 Total produced 469
Specifications Configuration: ​  • AAR B-B Gauge 4 ft 8+1⁄2 in (1,435 mm) standard gauge 5 ft 3 in (1,600 mm), Brazil Trucks AAR type B Wheel diameter 40 in (1,016 mm) Minimum curve 57° (116.14 ft or 35.40 m) Wheelbase 40 ft 5 in (12.32 m) Length 55 ft 5+3⁄4 in (16.91 m) Width 10 ft 0 in (3.05 m) Height 14 ft 5 in (4.39 m) Loco weight 247,500 lb (112,300 kg) Fuel capacity 1,000 US gal (3,800 L; 830 imp gal) Prime mover Alco 244T, 539T Engine type Inline 6, four-stroke diesel Aspiration Turbocharger Displacement 1,595 cu in (26.14 L) per cylinder 9,572 cu in (156.86 L) total Generator GE GT-553-C DC generator Traction motors 4× GE 731 DC traction motors Cylinders 6 Cylinder size 12+1⁄2 in × 13 in (318 mm × 330 mm) Loco brake Independent air Train brakes Air
Performance figures Maximum speed 65 mph (105 km/h) Power output 1,000 hp (746 kW) Tractive effort 40,425 lbf (179.82 kN)
Career Locale North America, Brazil, Saudi Arabia

The ALCO RS-1 is a 4-axle diesel-electric locomotive built by Alco-GE between 1941 and 1953 and the American Locomotive Company from 1953 to 1960. ALCO subsidiary Montreal Locomotive Works built an additional three RS-1s in 1954. This model has the distinction of having the longest production run of any diesel locomotive for the North American market. The RS-1 was in production for 19 years from the first unit Rock Island #748 in March 1941 to the last unit National of Mexico #5663 in March 1960.