EMD SW1504
From Wikipedia, the free encyclopedia
 Union Pacific UPY 1069, an SW1500 equipped with Flexicoil trucks for higher speed service, |
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| Power type | Diesel |
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| Builder | General Motors Electro-Motive Division (EMD) |
| Model | SW1504 |
| Build date | June 1966 and January 1974 |
| Total production | 60 |
| AAR wheel arr. | B-B |
| Gauge | 1,435 mm (4 ft 8½ in) |
| Length | 44 ft. 8 in. (13.61m) |
| Locomotive weight | 248,000 Lbs. (112,000 kg.) |
| Fuel capacity | 600-1000 gal. |
| Prime mover | EMD 645 |
| Engine type | 2-stroke diesel |
| Aspiration | Roots blower |
| Cylinders | V12 |
| Cylinder size | 9.5 in. (230.2-mm) x 10 in. (254-mm) |
| Transmission | Main generator: D32, Traction motors: D77/78DC |
| Power output | 1,500 hp (1,118 kW) |
| Locomotive brakes | Straight air |
| Train brakes | Air |
| Locale | Mexico |
The EMD SW1504 was a 1,500 hp (1,100 kW) diesel locomotive for switching service built by General Motors' Electro-Motive Division. It was sold only to Mexico's national railroad, Ferrocarriles Nacionales de México; 60 examples were built between May and August 1973. With the breakup of NdeM, the locomotives have passed to the variety of successor railroad operators in Mexico.
The SW1504 was fundamentally a SW1500 mounted on EMD's Blomberg trucks, instead of the Flexicoil trucks or switcher trucks available on the SW1500. The Blomberg truck, universally used on EMD's larger four-axle units, was larger than the Flexicoil truck and required a 2 ft (610 mm) increase in overall length. These locomotives were in many respects a transitory design between the SW1500 and EMD's later MP15DC.
[edit] References
- Laundry, Mark. The Yard Limit: EMD SW1504. Retrieved on March 23, 2005.
- Marre, Louis A.; Pinkepank, Jerry A. (1989). The Contemporary Diesel Spotter's Guide. Waukesha, WI: Kalmbach Books. ISBN 0-8902-6088-4.
- Trainweb.org. The Unofficial EMD Homepage. Retrieved on March 23, 2005.
- McCall, S.A. EMD Switcher Dimensional Data. Retrieved on March 23, 2005.
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