The ALCO S-1 and S-3 were 660 horsepower (490 kW) diesel-electric switcher locomotives produced by ALCO and their Canadian subsidiary Montreal Locomotive Works (MLW). The two locomotives differed only in trucks, with the S-1 using ALCO's own Blunt trucks, and the S-3 using AAR type A switcher trucks. The S-1 was built between April 1940 and ...

The Alco S1 was first produced in 1940 featuring an end-cab design using McIntosh & Seymore's 539 model prime mover. The model came equipped with 660 horsepower and was well liked by short lines and Class Is for yard work and light branch line duties.

These two locomotives most likely were used at Indiana Harbor IN to build a major expansion of the Inland Steel facility. After the war, they were transferred to Inland Steel ownership as 67 and 68, and it is presumed the Alcos were scrapped or converted to slugs. (Info from Andre Kristopans and Larry Russell) Locos were lettered DPC #1001 & 1002.

The ALCO S-1 and S-3 were 660 horsepower switcher diesel-electric locomotives produced by ALCO and their Canadian subsidiary Montreal Locomotive Works (MLW). The two locomotives differed only in trucks, with the S-1 using ALCO's own …

Mar 31, 2022 · An evolutionary refinement of the HH series, the new S series visually featured a lower and more attractive hood and was powered by Alco’s six-cylinder M&S 539-series engine. The Alco S1 offered 660 horsepower and its sister, the S2, thanks to turbocharging, delivered 1,000 horsepower.

Oct 20, 2019 · The switch engine was ubiquitous, and one of the most popular and important models was the diesel-electric S-series produced by the American Locomotive Company from 1940 to 1960. The first two models, the S-1 (660 hp) and the S-2 (1,000 hp), had a combined production run of just over 2,000 units, making them a smashing success.

Built by the American Locomotive Company (Alco) the low-hood S-2 was introduced in 1940 to replace Alco’s earlier high-hood switchers. The 1000 horsepower S-2 was a turbocharged version of the S-1. There were 1,502 S-2’s sold to North American Railroads. Alco introduced the …

ALCO S-1. The ALCO; American Locomotive Company; S1 is a type of four-axle 600 hp diesel locomotive built between 1940 and 1950. Many were built, as well as there being different versions of the actual locomotive. Many are also preserved, …

The ALCO S-1 and S-3 were 660 horsepower (490 kW) diesel-electric switcher locomotives produced by ALCO and their Canadian subsidiary Montreal Locomotive Works (MLW). The two locomotives differed only in trucks, with the S-1 using ALCO's own Blunt trucks, and the S-3 using AAR type A switcher trucks.

ATSF Alco S1 class 2303: master power roster with specifications and references : specifications: power: 660 hp x118 weight: 199,000 lbs x118 ... Alco -- American Locomotive Company ATSF -- Atchison, Topeka & Santa Fe Railway BSAWZ -- black with silver / …