The EMD SD38-2 is a model of six-axle diesel-electric locomotive built by General Motors Electro-Motive Division (EMD) from 1972 to 1979. EMD built 90 of these medium road-switchers, which were used in both yard and mainline roles. Part of the EMD Dash 2 line, the SD38-2 was an upgraded SD38 with modular electronic control systems, HT-C trucks, and many other detail improvements. The locomotive's power was provided by an EMD 16-645E 16-cylinder engine, which could generate 2,000 horsepower (1,500 kilowatts). These units were constructed with either 3,200 or 4,000 US gal (12,000 or 15,000 L; 2,700 or 3,300 imp gal) fuel tanks and were available with or without dynamic brakes. It shared the same 64-foot-8-inch (19.71 m) frame as the SD40-2 and SD45-2, which gives it a length over couplers of 68 feet 10 inches (20.98 m).
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Quick Facts Type and origin, Power type ...
EMD SD38-2 |
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Type and origin |
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Power type | Diesel-electric |
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Builder | |
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Model | SD38-2 |
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Build date | 1972–1979 |
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Total produced | 90 |
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Specifications |
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Configuration:
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• AAR | C-C |
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• UIC | Co′Co′ |
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Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge[a] |
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Wheel diameter | 3 ft 4 in (1.016 m) |
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Wheelbase | |
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• Truck | 13 ft 7 in (4.14 m) |
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Pivot centres | 43 ft 3.5 in (13.195 m) between bolsters; |
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Width | 10 ft 3+1⁄8 in (3.13 m) over handrail supports |
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Height | 15 ft 7+1⁄4 in (4.76 m) over cooling fan guard |
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Loco weight | 368,000 lb (167,000 kg) |
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Fuel type | Diesel |
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Fuel capacity | 3,200 or 4,000 US gal (12,000 or 15,000 L; 2,700 or 3,300 imp gal) |
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Prime mover | EMD 16-645E |
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RPM: | |
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• RPM idle | 200 |
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• Maximum RPM | 950 |
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Engine type | V16 Two-stroke diesel |
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Aspiration | Roots-blown |
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Alternator | AR10E1-D14 generator-alternator |
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Generator | AR10E1-D14 generator-alternator |
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Traction motors | 6 × D77/78 DC |
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Cylinders | 16 |
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Gear ratio | 62:15 |
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Loco brake | Air, Dynamic |
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Train brakes | Air |
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Safety systems | Deadman |
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Performance figures |
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Maximum speed | 65 mph (105 km/h) |
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Power output | 2,000 hp (1,500 kW) |
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