| Great Northern P-1 class |
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Chart from Railway Age Gazette Volume 57 (23) pp 1047-1050 showing Mountain type locomotive 1755 |
| Type and origin |
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| Power type | Steam |
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| Builder | Lima Locomotive Works |
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| Serial number | 1364-1378 |
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| Build date | May-June 1914 |
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| Total produced | 15 |
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| Rebuild date | June-November 1928 |
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| Number rebuilt | 15 |
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| Specifications |
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Configuration:
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| • Whyte | 4-8-2 |
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| • UIC | 2′D2′ h1 |
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| Gauge | 4 ft 8+1⁄2 in (1,435 mm) standard gauge |
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| Leading dia. | 36.5 in (927 mm) |
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| Driver dia. | 63 in (1,600 mm) |
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| Trailing dia. | 42.5 in (1,080 mm) |
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| Wheelbase | 71.33 ft (21,741 mm) |
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| Axle load | 55,000 lb (25,000 kilograms; 25 metric tons) |
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| Adhesive weight | 218,000 lb (99,000 kilograms; 99 metric tons) |
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| Loco weight | 236,000 lb (107,000 kilograms; 107 metric tons) |
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| Tender weight | 161,000 lb (73,000 kilograms; 73 metric tons) |
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| Total weight | 487,000 lb (221,000 kilograms; 221 metric tons) |
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| Fuel type | Nos. 1750-1759: Coal
Nos. 1760-1764: Fuel oil |
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| Fuel capacity | 15 short tons (13.6 t; 13.4 long tons) |
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| Water cap. | 8,000 US gal (30,000 L; 6,700 imp gal) |
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| Firebox: | |
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| • Grate area | 78 sq ft (7.2 m2) |
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| Boiler | 95 in (2,413 mm) |
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| Boiler pressure | 180 lbf/in2 (1.24 MPa) |
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| Heating surface: | |
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| • Firebox | 340 sq ft (32 m2) |
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| Cylinders | Two |
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| Cylinder size | 28 in × 32 in (711 mm × 813 mm) |
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| Valve gear | Walschaert |
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| Career |
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| Operators | Great Northern |
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| Class | P-1 |
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| Numbers | 1750–1764 (P-1) 2175-2189 (Q-2) |
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| Retired | 1928 (1953-1958 as Q-2s) |
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| Preserved | 0 |
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| Disposition | All rebuilt to Q-2 Class 2-10-2s in 1928 and scrapped by last retirement |
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The Great Northern P-1 was a class of 15 4-8-2 "Mountain" type steam locomotives built by the Lima Locomotive Works in 1914 and operated by the Great Northern Railway.
History
The P-1s were at first assigned to pull passenger trains, but were proven to be too slow and were reassigned to freight service. Between June and November 1928, they were all rebuilt by the GN's Superior, Great Falls, and Hillyard Shops to Q-2 Class 2-10-2s.[1]
Disposition
Neither the P-1s nor the Q-2s have survived into preservation today. Retirement started on July 16, 1953 and were all retired by April 1958.
References
- Keyes, Norman C. Jr.; Middleton, Kenneth R. (Autumn 1980). "The Great Northern Railway Company: All-Time Locomotive Roster, 1861–1970". Railroad History. 143 (143). Boston, Mass.: Railway and Locomotive Historical Society: 108, 110. ISSN 0090-7847. JSTOR 43523930.