The Great Northern S-2 was a class of 14 4-8-4 "Northern" type steam locomotives built by the Baldwin Locomotive Works in 1930 and operated by the Great Northern Railway until the late 1950s.
Quick Facts Type and origin, Power type ...
Great Northern S-2 class |
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Type and origin |
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Power type | Steam |
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Designer | William Kelly[1] |
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Builder | Baldwin Locomotive Works |
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Serial number | 61211–61216, 61224, 61225, 61237–61242 |
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Model | Baldwin 16-52-2⁄4-E, (#1 to #14) |
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Build date | February–March 1930 |
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Total produced | 14 |
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Specifications |
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Configuration:
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• Whyte | 4-8-4 |
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• UIC | 2′D2′ h2 |
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Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
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Leading dia. | 36 in (914 mm) |
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Driver dia. | 80 in (2,032 mm) |
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Trailing dia. | 46 in (1,168 mm) |
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Tender wheels | 33 in (838 mm) |
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Wheelbase | Loco & tender: 91.17 ft (27.79 m) |
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Length | 103 ft 3+1⁄8 in (31.47 m) |
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Width | 11 ft 0+3⁄4 in (3.37 m) |
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Height | 16 ft 0+7⁄8 in (4.90 m) |
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Axle load | 64,250 lb (29,140 kilograms; 29.14 metric tons) |
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Adhesive weight | 257,000 lb (117,000 kilograms; 117 metric tons) |
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Loco weight | 438,120 lb (198,730 kilograms; 198.73 metric tons) |
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Tender weight | Working: 326,560 lb (148,130 kilograms; 148.13 metric tons) Empty: 136,300 lb (61,800 kilograms; 61.8 metric tons) |
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Total weight | 764,680 lb (346,850 kilograms; 346.85 metric tons) |
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Tender type | Vanderbilt, Water-bottom |
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Fuel type | Fuel oil |
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Fuel capacity | 5,800 US gal (22,000 L; 4,800 imp gal) |
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Water cap. | 17,250 US gal (65,300 L; 14,360 imp gal) |
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Firebox: | |
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• Grate area | 97.75 sq ft (9.081 m2) |
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Boiler | 94 in (2,400 mm) |
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Boiler pressure | 225 lbf/in2 (1.55 MPa) |
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Heating surface: | |
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• Firebox | 401 sq ft (37.3 m2) |
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• Tubes | 2.25 in (57 mm) |
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• Flues | 3.5 in (89 mm) |
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• Total surface | 4,781 sq ft (444.2 m2) |
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Superheater:
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• Type | Type E |
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• Heating area | 2,265 sq ft (210.4 m2) |
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Cylinders | Two |
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Cylinder size | 29 in × 29 in (737 mm × 737 mm) |
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Valve gear | Walschaert |
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Valve type | Piston valves |
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Close
The locomotives were built to haul passengers on the GN mainline, pulling the Empire Builder and the Oriental Limited and were assigned to the Montana division for service between Williston, North Dakota and Havre, Montana and the Spokane division for service between Spokane, Washington and Wenatchee, Washington, then assigned to the Divide between Havre and Whitefish, Montana, of which mostly runs through the famed Marias Pass, though they were also used on GN tracks outside of their assigned areas.
Today, only one S-2 survives, No. 2584. It was retired in December 1957 and moved to the Havre depot in Havre, Montana in May 1964 where it still resides today.