#2947
ALCO RS-3
🇨🇦 Canada ·built by American Locomotive Company· from 1950· model of diesel-electric locomotive
10 photos from Wikimedia Commons · credits & licences
- 1. CNJ 1554 (6125339203): jpmueller99 from Shenandoah Valley of VA, USA· CC BY 2.0
- 2. Alco RS3: Ham549· CC0
- 3. Central of Georgia RS-3 141 and a Southern F7B near Madison, GA on November 25, 1967 (27723591795): railfan 44· Public domain
- 4. Cuyahoga Valley Scenic Railway RS3 No. 4099 - November 2006: NOYB #1· CC BY 2.0
- 5. Delaware and Hudson RS3 4061 at the Mechanicville, NY yard on February 22, 1970 (26193276796): railfan 44· Public domain
- 6. GB&W RS3s 306 and 308 at Norwood Yard, Green Bay, WI in September 1963 (25794501802): railfan 44· Public domain
- 7. Great Northern Railway Alco RS-3 No. 299 in Schenectady, New York, August 2015: David Wilson· CC BY 2.0
- 8. RS3 locomotive - September 2017: Tim Evanson· CC BY-SA 2.0
- 9. MLW RS3 CBTU 7108: Sydney S. Correa· CC BY 3.0
- 10. Erie Western 1603 in Hammond, December 1978: Tim_kd5urs· CC BY-SA 2.0
what is it?
The ALCO RS-3 is a 1,600 hp (1.2 MW), B-B diesel-electric locomotive manufactured from May 1950 to August 1956 by American Locomotive Company (ALCO) and its subsidiary Montreal Locomotive Works (MLW). A total of 1,418 were produced: 1,272 for American railroads, 98 for Canadian railroads, 48 for Brazilian railroads, and 7 for Mexican railroads. The RS-3 greatly resembled the earlier RS-2 and somewhat resembles the RS-1, but it had 100 more horsepower thanks to its 12-cylinder, 1,600 hp ALCO Model 244 engine.
base stats
Bars compare against all trains: 600 km/h (maglev), 1,700 seats; power, weight and number built on a log scale up to 20 MW, 1,000 t and 20,000 built.
fun facts
- First built 76 years ago, in 1950.
- 1.2 MW is about 14 family cars (~85 kW each) flat out.
- Weighs about as much as 19 African elephants (~6 t each).
- 17.1 m long: about 4 cars parked nose to tail.
diesel locomotive: A diesel engine on board drives the wheels, usually through a generator (diesel-electric).
spec sheet
- built
- 1950–1956
- number built
- 1,418
- kind
- Diesel-electric
- traction
- diesel
- origin
- 🇨🇦 Canada
- builders
- American Locomotive Company, Montreal Locomotive Works
- top speed
- 137 km/h
- power
- 1.2 MW
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- B-B
- length
- 17.1 m
- weight
- 112 t
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q2066268, Wikipedia: ALCO RS-3 (CC BY-SA 4.0).Updated 2026-10-25.
