ALCO RSD-1

Infobox Locomotive
name=ALCO RSD-1
powertype=Diesel-electric

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caption=Former US Army ALCO RSD-1, now owned by the Tennessee Valley Railroad Museum.
gauge=RailGauge|ussg|lk=on
RailGauge|60 – Russia
aarwheels=C-C
uicclass=Co'Co'
cylindercount=Straight-6
primemover= ALCO 539T
builddate=November 1942 – May 1946
totalproduction=200
locale=North America, Soviet Union
poweroutput=convert|1000|hp|abbr=on
fuelc
convert|1000|usgal|abbr=on
topspeed=convert|65|mph|abbr=on
weight=convert|247500|lb|t|1
tractiveeffort=convert|40425|lbf|abbr=on|lk=on
length=convert|55|ft|5 +3/4|in|m|2|abbr=on
width=convert|10|ft|0|in|m|2|abbr=on}
height=convert|14|ft|5|in|m|2|abbr=on
enginetype=Four-stroke diesel
aspiration=Turbocharger
cylindersize=12½ in × 13 in
(318 mm × 330 mm)
displacement=convert|9572|cuin|l|abbr=on|lk=on
transmission=DC generator,
DC traction motors
locobrakes= Straight air
trainbrakes=Air
buildmodel=RSD-1The ALCO RSD-1 was a diesel-electric locomotive built by American Locomotive Company (ALCO). This model was a road switcher type rated at 1000 horsepower and rode on three-axle trucks, having a C-C wheel arrangement. It was often used in much the same manner as its four-axle counterpart, the ALCO RS-1, though the six-motor design allowed better tractive effort at lower speeds, as well as a lower weight-per-axle.

There were three different specifications issued that covered the RSD-1 model; E1645 and E1646 were for wartime production for the US Army, while E1641 was a post-war order for the Mexican National Railways (Ferrocarriles Nacionales de México).

Seventy of the RSD-1s were shipped overseas to the Soviet Union during World War II, where they were classed as the Soviet Railways Д^а20 (D^a20) class, as part of the Allied war effort. These locomotives were also used in the Trans-Iranian Railway. Subsequently, the Soviets kept many of the RSD-1s after the war, adopting the design to form the basis of their own line of diesel locomotives.

Original owners

pecification E1645

External links

* [http://alcoworld.railfan.net/plagiate.htm ALCo World: The Russian RSD-1 Copies]