Monday, September 26, 2016

Alco S-1 switcher

The S-1 was built between April 1940 and June 1950, with a total of 543 completed. They were a Bo-Bo type fitted with a naturally aspirated 4-stroke Alco 539 prime mover rated at 660 hp (490 kW). This example seen circa 1970 looks to have experienced a long period since its last overhaul.

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