Great Northern P-1

Great Northern P-1 class
Great Northern P-1 class
	Chart from Railway Age Gazette Volume 57 (23) pp 1047-1050 showing Mountain type locomotive 1755
Power type
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
Configuration:;
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; Nos. 1760-1764: 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 area	78 sq ft (7.2 m2)
Boiler	95 in (2,413 mm)
Boiler pressure	180 lbf/in2 (1.24 MPa)
Heating surface:
• Firebox	340 sq ft (32 m2)
Cylinders	Two
Cylinder size	28 in × 32 in (711 mm × 813 mm)
Valve gear	Walschaert
Tractive effort
Performance figures
Tractive effort	60,928 lbf (271.02 kN)
Factor of adh.	3.58
Operators
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

Power typeSteam

Serial number1364-1378

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.

v t e Great Northern Railway steam and electric locomotives
0-6-0	A-1 A-2 A-3 A-4 A-5 A-6 A-7 A-8 A-9 A-10 A-11
4-4-0	1 (1 William Crooks) B-1 B-2 B-3 B-4 B-5 B-6 B-7 B-8 B-9 B-10 B-11 B-12 B-13 B-14 B-15 B-16 B-17 B-18 B-19 B-20 B-21 B-22 B-23
0-8-0	C-1 C-2 C-3 C-4 C-5
2-6-0	D-1 D-2 D-3 D-4 D-5 D-6 D-7 D-8
4-6-0	E-1 E-2 E-3 E-4 E-5 E-6 E-7 E-8 E-9 E-10 E-11 E-12 E-13 E-14 E-15
2-8-0	F-1 F-2 F-3 F-4 F-5 F-6 F-7 F-8 (1147) (1246) F-9 F-10 F-11 F-12
4-8-0	G-1 G-2 G-3 G-4 G-5 G-6
4-6-2	H-1 H-2 H-3 H-4 H-5 (1355) H-6 H-7
2-6-2	J-1 J-2 J-3
4-4-2	K-1
2-6-6-2	L-1 L-2
2-6-8-0	M-1 M-2
2-8-8-0	N-1 N-2 N-3
2-8-2	O-1 (3059) O-2 O-3 O-4 O-5 O-6 O-7 O-8
4-8-2	P-1 P-2 (2507) (2523)
2-10-2	Q-1 Q-2
2-8-8-2	R-1 R-2
4-8-4	S-1 S-2 (2584)
4-6-6-4	Z-6
Electric	3-phase boxcab Z-1 Y-1 W-1
List of Great Northern Railway (U.S.) locomotives

Disposition