The ALCO S-2 and S-4 are 1,000-horsepower (746 kW) diesel electric switcher locomotives produced by ALCO and Canadian licensee Montreal Locomotive Works (MLW). [1] Powered by turbocharged, 6-cylinder ALCO 539 diesel engines, the two locomotives differed mainly in their trucks: the S-2 had ALCO "Blunt" trucks; the S-4, AAR type A switcher trucks ...

Dec 23, 2024 · The American Locomotive Company (Alco) began production on the S4 directly after the S2 in June, 1950. It was quite apparent that railroads preferred Alco's more powerful small switchers as both the S2 and S4 far outsold both the S1 and S3 by more than 1,400 units!

The ALCo S-4 was the post-war version of the ALCo S-2, outwardly very similar to the S-2, it rode on standard AAR 'B' type trucks. Deliveries started in 1951 and went through to 1955.

The ALCO S-2 and S-4 are 1,000-horsepower (746 kW) diesel electric switcher locomotives produced by ALCO and Canadian licensee Montreal Locomotive Works (MLW). Powered by turbocharged, 6-cylinder ALCO 539 diesel engines, the two locomotives differed mainly in their trucks: the S-2 had ALCO "Blunt" trucks; the S-4, AAR type A switcher trucks.

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-2 (E1540) and S-4 (ME1000) Data Sheet Information Compiled by: JEAN-DENIS BACHAND: New: 3 May 2005: Drawing by: Jean-Denis Bachand-Engine Builder: Dominion Engineering Works : Engine: 4-cycle Model 539 6L: Bore & Stroke: 12.5" X 13.0" RPM (Maximum / Minimum) 740 / 315 (S-2) and 740/275 (S-4) Main Generator: GE - GT553 (S-2) / GT 563 (S-4)

Quebec Iron & Titanium (Romaine River Ry.) Sources of information: Extra 2200 South, Diesel Era, The Short Line and The Canadian Trackside Guide. Additional info provided by R. Craig. Model: ?

Mar 31, 2022 · Working near the U.S.-Canadian border at Sault St. Marie, Ontario, Canada, in July 1984, CP Rail Alco S4 handles yard duties side-by-side with switchers of EMD design. Like a majority of Alco-designed diesels destinated to work in Canada, the CP S4 was constructed by Alco’s Canadian subsidiary, the Montreal Locomotive Works.

All S-4s were painted black with yellow lining/lettering, and all were off the roster by 1969. None were ever painted in the blue and grey lightning stripe livery. Fuel (gals.)

Sep 22, 2024 · The ALCO S2 and S4 were 1,000 horsepower (746 kW) diesel electric switchers produced by ALCO and Canadian licensee Montreal Locomotive Works (MLW). Basically, the two locomotives differed only in trucks, with the S-2 using ALCO's own "Blunt" trucks, and the S-4 riding on standard AAR type A switcher trucks .