_switching_Train_1%2C_the_San_Francisco_Chief_at_Amarillo%2C_TX_(22189151459).jpg)
1 photo from Wikimedia Commons · credits & licences
- 1. NEEDS DATE ATSF 631 (Baldwin DS4-4-750) switching Train 1, the San Francisco Chief at Amarillo, TX (22189151459): railfan 44· Public domain
what is it?
The Baldwin DS-4-4-750 was a four-axle 750 horsepower (560 kW) diesel-electric switcher locomotive built by the Baldwin Locomotive Works at it Eddystone, Pennsylvania factory between 1949 and 1951. It was a bridge between the 660 horsepower (490 kW) DS-4-4-660 and the S-8. It was the low power companion in Baldwin's catalog to their DS-4-4-1000 and the S-12.
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 77 years ago, in 1949.
- 559 kW is about 7 family cars (~85 kW each) flat out.
diesel locomotive: A diesel engine on board drives the wheels, usually through a generator (diesel-electric).
spec sheet
- built
- 1949–1951
- number built
- 53
- kind
- Diesel-electric
- traction
- diesel
- origin
- 🇺🇸 United States
- builders
- Baldwin Locomotive Works
- top speed
- —
- power
- 559 kW
- gauge
- 1,435 mm standard gauge
- wheel arrangement
- B′B′
From the Wikipedia infobox and Wikidata. Blank means the sources don't say.
Sources: Wikidata Q4850550, Wikipedia: Baldwin DS-4-4-750 (CC BY-SA 4.0).Updated 2026-10-25.