Alco RS-1
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| 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 539T |
| Engine type | In line 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 was a 4-axle diesel-electric locomotive built by Alco-GE between 1941 and 1953 and the American Locomotive Company from 1953 to 1960. The Montreal Locomotive Works built 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.
The hood unit configuration of the RS-1 pioneered the road switcher type of diesel locomotive, beginning the move away from the carbody units which featured on most diesel locomotives before then. Most North American locomotives built since have followed this basic design. In 1940, the Rock Island Railroad approached ALCO about building a locomotive for both road and switching service.
The first thirteen production locomotives were requisitioned by the US Army, the five railroads affected had to wait while replacements were manufactured. The requisitioned RS-1s were remanufactured by ALCO into six axle RSD-1s for use on the Trans Iranian Railroad to supply the Soviet Union during World War Two.
1000 at The Museum of Alaska Transportation and Industry
25 was Bay Colony Railroad 1064 Current owner unknown
Several examples exist at tourist railways and railway museums, including:
Diesel Shop roster with all data from Extra 2200 South http://www.thedieselshop.us/Alco_RS1.HTML
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Wikipedia