EMD SW1504

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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, 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., and Pinkepank, Jerry A. (1989). The Contemporary Diesel Spotter's Guide. Waukesha, WI: Kalmbach Books. ISBN 0-89026-088-4. 
• Trainweb.org. The Unofficial EMD Homepage. Retrieved on March 23, 2005.
• McCall, S.A. EMD Switcher Dimensional Data. Retrieved on March 23, 2005.

v • d • e Diesel-electric switcher locomotives built by GM-EMD
SC, NC, NC1, NC2, T, NW1, NW1A, NW4, SW, NW2, NW3, NW5, TR1, SW1, SW7, SW8, SW9, SW600, SW900, SW1000, SW1001, SW1200, SW1500, SW1504, MP15DC, MP15AC, MP15T, RS1325, GMD1
(See also: List of GM-EMD locomotives)