page_title: ALCO RSD-4
hierarchical_section_title: ALCO RSD-4
caption_attribution_description: Kennecott Copper Corporation locomotive 201 on display at Snoqualmie Depot, Snoqualmie, Washington, USA. Built 1951 by ALCO, this is a model RSD-4 diesel-electric locomotive: a 12-cylinder diesel engine drives an electric generator.
context_page_description: The ALCO RSD-4 was a diesel-electric locomotive of the road switcher type rated at 1,600 horsepower, that rode on three-axle trucks, having a 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 Due to the inadequate capacity of the main generator, this model was later superseded in production by the ALCO RSD-5
context_section_description: 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 a 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 Due to the inadequate capacity of the main generator, this model was later superseded in production by the ALCO RSD-5
caption: Kennecott Copper Corporation locomotive 201 on display at Snoqualmie Depot, Snoqualmie, Washington
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