Girish Mahajan

ALCO RSD 4

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Power type  Diesel-electric
Build date  1951–1952
AAR wheel arr.  C-C
Builder  ALCO
Total produced  36
ALCO RSD-4
Model  RSD-4 (Specification E1663)

The ALCO RSD-4 was a diesel-electric locomotive of the road switcher type rated at 1,600 horsepower (1.2 MW), that rode on three-axle trucks, having an C-C wheel arrangement.

Used in much the same manner as its four-axle counterpart, the ALCO RS-3, though the six-motor design allowed better tractive effort at lower speeds. Due to the inadequate capacity of the main generator, this model was later superseded in production by the ALCO RSD-5

Preserved units

The only ALCO RSD-4 that has survived is Kennecott Copper Corporation #201. As of 2007, it resides in fully restored condition at the Northwest Railway Museum (formerly known as the Puget Sound & Snoqualmie Valley Railway) in Snoqualmie, Washington, wearing a coat of bright orange paint.

References

ALCO RSD-4 Wikipedia


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