| 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
Initially assigned to pull passenger trains, the P-1s were found to be too slow and were reassigned to freight service. Between June and November 1928, all P-1s were rebuilt by the GN's Superior, Great Falls, and Hillyard Shops into 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.