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Class of 15 American 4-8-2 locomotives
Great Northern P-1 class Chart from Railway Age Gazette Volume 57 (23) pp 1047-1050 showing Mountain type locomotive 1755
Type and origin Power type Steam Builder Lima Locomotive Works Serial number 1364-1378 Build date May-June 1914 Total produced 15 Rebuild date June-November 1928 Number rebuilt 15
Specifications Configuration: • Whyte 4-8-2 • UIC 2′D2′ h1 Gauge 4 ft 8+ 1 ⁄ 2 in (1,435 mm ) standard gauge Leading dia. 36.5 in (927 mm) Driver dia.63 in (1,600 mm) Trailing dia. 42.5 in (1,080 mm) Wheelbase 71.33 ft (21,741 mm) Axle load 55,000 lb (25,000 kilograms; 25 metric tons) Adhesive weight 218,000 lb (99,000 kilograms; 99 metric tons) Loco weight 236,000 lb (107,000 kilograms; 107 metric tons) Tender weight 161,000 lb (73,000 kilograms; 73 metric tons) Total weight 487,000 lb (221,000 kilograms; 221 metric tons) Fuel type Nos. 1750-1759: Coal Fuel oil Fuel capacity 15 short tons (13.6 t; 13.4 long tons) Water cap. 8,000 US gal (30,000 L; 6,700 imp gal) Firebox: • Grate area78 sq ft (7.2 m2 ) Boiler 95 in (2,413 mm) Boiler pressure 180 lbf/in2 (1.24 MPa) Heating surface: • Firebox340 sq ft (32 m2 ) Cylinders Two Cylinder size 28 in × 32 in (711 mm × 813 mm) Valve gear Walschaert
Career Operators Great Northern Class P-1 Numbers 1750–1764 (P-1) 2175-2189 (Q-2) Retired 1928 (1953-1958 as Q-2s) Preserved 0 Disposition All rebuilt to Q-2 Class 2-10-2s in 1928 and scrapped by last retirement
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 .
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]
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.
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 .
