EMD SW1504

Infobox Locomotive
name= EMD SW1504
powertype= Diesel
gauge=RailGauge|sg


caption= HLCX 1525, an SW1504 equipped with Flexicoil trucks for higher speed service,
builder= General Motors Electro-Motive Division (EMD)
aarwheels= B-B
cylindercount= V12
primemover= EMD 645
builddate=June 1966 and January 1974
totalproduction=60
locale=
poweroutput=1,500 hp (1,118 kW)
topspeed=
weight=248,000 Lbs. (112,000 kg.)
tractiveeffort=
fuelc

length=44 ft. 8 in. (13.61m)
enginetype=2-stroke diesel
aspiration=Roots blower
cylindersize=9.5 in. (230.2-mm) x 10 in. (254-mm)
displacement=
transmission=Main generator: D32, Traction motors: D77/78DC
locobrakes=Straight air
trainbrakes=Air
buildmodel=SW1504The 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, some have been sold to North American leasing companies.

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.

The spotting clues are the Flexicoil trucks and the large ventilated box on the long hood in front of the cab.

References

* Laundry, Mark. " [http://yardlimit.railfan.net/emd/sw1504/index.html The Yard Limit: EMD SW1504] ". Retrieved on March 23, 2005.
*
* Trainweb.org. " [http://www.trainweb.org/emdloco/ The Unofficial EMD Homepage] ". Retrieved on March 23, 2005.
* McCall, S.A. " [http://www.hosam.com/emd/swros.html EMD Switcher Dimensional Data] ". Retrieved on March 23, 2005.