LMS 2-Cylindered Stanier 2-6-4T

Type and origin
Type and origin
Power type	Steam
Designer	William Stanier
Builder	LMS Derby Works (133); North British Locomotive Co. (73);
Build date	1935–1943
Total produced	206

LMS Stanier Class 4P 2-cylinder 2-6-4T
LMS Stanier Class 4P 2-cylinder 2-6-4T
	42444 at Bacup station, June 1959
Power type
Type and origin
Power type	Steam
Designer	William Stanier
Builder	LMS Derby Works (133); North British Locomotive Co. (73);
Build date	1935–1943
Total produced	206
Configuration:;
Specifications
Configuration:;
• Whyte	2-6-4T
• UIC	1′C2′ h2t
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	3 ft 3+1⁄2 in (1.003 m)
Driver dia.	5 ft 9 in (1.753 m)
Trailing dia.	3 ft 3+1⁄2 in (1.003 m)
Wheelbase	38 ft 6 in (11.73 m)
Length	47 ft 2+3⁄4 in (14.40 m)
Loco weight	87.85 long tons (89.26 t; 98.39 short tons)
Fuel type	Coal
Fuel capacity	3.5 long tons (3.6 t; 3.9 short tons)
Water cap.	2,000 imp gal (9,100 L; 2,400 US gal)
Firebox:
• Grate area	26+3⁄4 sq ft (2.49 m2)
Boiler	LMS type 4C
Boiler pressure	200 lbf/in2 (1.4 MPa)
Heating surface:
• Firebox	139 or 143 sq ft (12.9 or 13.3 m2)
• Tubes and flues	1,126 or 1,223 sq ft (104.6 or 113.6 m2)
Superheater:;
• Heating area	185 to 285 sq ft (17.2 to 26.5 m2)
Cylinders	Two, outside
Cylinder size	19+5⁄8 in × 26 in (500 mm × 660 mm)
Valve gear	Walschaerts
Tractive effort
Performance figures
Tractive effort	24,670 lbf (109.7 kN)
Operators
Career
Operators	London, Midland and Scottish Railway; → British Railways;
Power class	LMS: 4P; BR: 4MT;
Withdrawn	1960–1967
Disposition	All scrapped

Sir William Stanier's London, Midland and Scottish Railway (LMS) Class 4P 2-Cylinder 2-6-4T was a class of 206 steam locomotive built between 1935 and 1943. They were based on his LMS 3-Cylinder 2-6-4T.