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Great Northern class S-1

Class of 6 American 4-8-4 Northern Type steam locomotives From Wikipedia, the free encyclopedia

The Great Northern S-1 was a class of 6 4-8-4 Northern type steam locomotives built by the Baldwin Locomotive Works in 1929 and operated by the Great Northern Railway until the late 1950s. They were initially put in passenger service but eventually saw service pulling freight.

Power typeSteam
Power typeSteam
BuilderBaldwin Locomotive Works
Serial number60781–60782, 60807–60810
Quick facts Type and origin, Power type ...
Great Northern S-1 class
Type and origin
Power typeSteam
BuilderBaldwin Locomotive Works
Serial number60781–60782, 60807–60810
ModelBaldwin 16-50-2⁄4-E, (#1 to #6)
Build dateApril–May, 1929
Total produced6
Specifications
Configuration:
​
 • Whyte4-8-4[1]
 • UIC2′D2′ h2
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Driver dia.73 in (1,854 mm)[1]
Wheelbase94.90 ft (28,926 mm)
Axle load67,000 lb (30,000 kilograms; 30 metric tons)
Adhesive weight270,600 lb (122,700 kg; 122.7 t)[1]
Loco weight470,120 lb (213,240 kg; 213.24 t)
Tender weight375,780 lb (170,450 kg; 170.45 t)
Total weight847,900 lb (384,600 kg; 384.6 t)
Tender typeVanderbilt
Fuel typeFuel oil
Fuel capacity5,800 US gal (22,000 L; 4,800 imp gal) oil
Water cap.22,000 US gal (83,000 L; 18,000 imp gal)
Firebox:​
 • Grate area102 sq ft (9.5 m2)
Boiler98 in (2,500 mm)
Boiler pressure250 lbf/in2 (1.72 MPa)[1]
Heating surface:​
 • Firebox401 sq ft (37.3 m2)
 • Total surfacetubearea =
CylindersTwo
Cylinder size28 in × 30 in (711 mm × 762 mm)[1]
Valve gearWalschaert
Performance figures
Power output3,600 hp (2,700 kW)[2]
Tractive effort68,470 lbf (304.57 kN)[1]
Factor of adh.4.00
Career
OperatorsGreat Northern
ClassS-1
Numbers2550–2555
Retired1956-1958
DispositionAll scrapped
Total engine weight: 472,000 lb (214,000 kg; 214 t)[1]
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History

Design

Initially intended for passenger pulling, the S-1s eventually found their way into pulling freight trains. The S-1 is capable of pulling 18 conventional steel passenger cars westbound and 13 cars eastbound, and 14 cars if the weather is favorable. Should passenger trains exceed such a number of cars eastbound, helper service is added between Walton and Summit. With the help of a pusher, they can pull up to 6,000 tons eastbound.[3] Only one S-1 was fitted with a vestibule cab, No. 2552.[4] Despite their overall success, they had a reputation for being hard on the rails. They were also fitted with roller bearings in the 1940s.

Revenue service

When delivered, they were assigned for passenger service over the Divide between Havre and Whitefish, Montana, then in 1931, they were tested to pull freight between Whitefish, Montana and Hillyard, Washington. The test was a success and the S-1s were reassigned to pull freight trains, leaving the passenger runs mainly to the later S-2 Class of 1930. The S-1 continued pulling freight until dieselization. Retirement started on April 19, 1956 and by April 1958, all of the S-1s have been retired.[4]

Disposition

No S-1 has survived into preservation today, the first S-1 was sold for scrap on April 19, 1956 and by 1963, all of the S-1s have been scrapped.[4]

Roster

More information Number, Baldwin serial number ...
NumberBaldwin serial numberDate builtDispositionNotes
255060781April 1929Retired December 1957, scrapped 1963.
255160782April 1929Retired December 1957, scrapped 1963.
255260807May 1929Retired December 1957, scrapped 1963.Received Vestibule cab.[citation needed]
255360808May 1929Sold for scrap, Paper Calmenson and Company[a], April 19, 1956.
255460809May 1929Retired December 1957, scrapped 1963.
255560810May 1929Retired April 1958, scrapped 1963.
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See also

Notes

References

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