The ALCO S-1 and S-3 were 660 horsepower (490 kW) switcher diesel-electric locomotives produced by ALCO and their Canadian subsidiary Montreal Locomotive Works (MLW). Basically the two locomotives differed only in trucks with the S-1 using ALCO’s own Blunt trucks and the S-3 riding on standard AAR type A switcher trucks.
thumbnail
height (cm)
4.2672
length (km)
13.716
width (mm)
3.048
builder
Montreal Locomotive Works, American Locomotive Company
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