LMS Princess Royal Class 6201 Princess Elizabeth

Specifications
Specifications
Configuration:;
• Whyte	4-6-2
• UIC	2′C1′ h4
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Leading dia.	3 ft 0 in (1 m)
Driver dia.	6 ft 6 in (2 m)
Trailing dia.	3 ft 9 in (1 m)
Minimum curve	6 chains (121 m) normal; 4+1⁄2 chains (91 m) dead slow;
Wheelbase	63 ft 10 in (19.456 m)
• Engine	37 ft 9 in (11.506 m)
• Drivers	15 ft 3 in (4.648 m)
• Tender	15 ft 0 in (4.572 m)
Length	74 ft 4+1⁄4 in (22.663 m)
Width	9 ft 0 in (2.743 m)
Height	13 ft 3 in (4.039 m)
Axle load	22.50 long tons (22.86 t)
• Leading	21.00 long tons (21.34 t)
• Coupled	22.50 long tons (22.86 t)
• Trailing	16.00 long tons (16.26 t)
• Tender axle	Front: 18.60 long tons (18.90 t); Middle: 17.80 long tons (18.09 t); Rear: 18.25 long tons (18.54 t);
Adhesive weight	67.50 long tons (68.58 t)
Loco weight	104.50 long tons (117.04 short tons; 106.18 t); 46202: 110.55 long tons (123.82 short tons; 112.32 t);
Tender weight	54.65 long tons (61.21 short tons; 55.53 t)
Fuel type	Coal
Fuel capacity	9.00 long tons (10.08 short tons; 9.14 t); later 10.00 long tons (11.20 short tons; 10.16 t);
Water cap.	4,000 imp gal (18,000 L; 4,800 US gal)
Firebox:
• Grate area	45 sq ft (4.2 m2)
Boiler:;
• Model	LMS type 1
• Tube plates	19 ft 3 in (5.867 m)
• Small tubes	2+3⁄8 in (60 mm), 32 off
• Large tubes	5+1⁄8 in (130 mm), 123 off
Boiler pressure	250 psi (1.7 MPa)
Heating surface:
• Firebox	190 or 217 sq ft (17.7 or 20.2 m2)
• Tubes and flues	2,299 sq ft (213.6 m2)
Superheater:;
• Heating area	584 sq ft (54.3 m2)
Cylinders	4
Cylinder size	16+1⁄4 in × 28 in (413 mm × 711 mm)
Valve gear	Walschaerts

Type and origin
Type and origin
Power type	Steam
Designer	William Stanier
Builder	Crewe Works
Build date	November 1933

6201 *Princess Elizabeth*
6201 Princess Elizabeth
	6201 Princess Elizabeth at Castleton South Junction.
Power type
Type and origin
Power type	Steam
Designer	William Stanier
Builder	Crewe Works
Build date	November 1933
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-2
• UIC	2′C1′ h4
Gauge	4 ft 8+1⁄2 in (1,435 mm)
Leading dia.	3 ft 0 in (1 m)
Driver dia.	6 ft 6 in (2 m)
Trailing dia.	3 ft 9 in (1 m)
Minimum curve	6 chains (121 m) normal; 4+1⁄2 chains (91 m) dead slow;
Wheelbase	63 ft 10 in (19.456 m)
• Engine	37 ft 9 in (11.506 m)
• Drivers	15 ft 3 in (4.648 m)
• Tender	15 ft 0 in (4.572 m)
Length	74 ft 4+1⁄4 in (22.663 m)
Width	9 ft 0 in (2.743 m)
Height	13 ft 3 in (4.039 m)
Axle load	22.50 long tons (22.86 t)
• Leading	21.00 long tons (21.34 t)
• Coupled	22.50 long tons (22.86 t)
• Trailing	16.00 long tons (16.26 t)
• Tender axle	Front: 18.60 long tons (18.90 t); Middle: 17.80 long tons (18.09 t); Rear: 18.25 long tons (18.54 t);
Adhesive weight	67.50 long tons (68.58 t)
Loco weight	104.50 long tons (117.04 short tons; 106.18 t); 46202: 110.55 long tons (123.82 short tons; 112.32 t);
Tender weight	54.65 long tons (61.21 short tons; 55.53 t)
Fuel type	Coal
Fuel capacity	9.00 long tons (10.08 short tons; 9.14 t); later 10.00 long tons (11.20 short tons; 10.16 t);
Water cap.	4,000 imp gal (18,000 L; 4,800 US gal)
Firebox:
• Grate area	45 sq ft (4.2 m2)
Boiler:;
• Model	LMS type 1
• Tube plates	19 ft 3 in (5.867 m)
• Small tubes	2+3⁄8 in (60 mm), 32 off
• Large tubes	5+1⁄8 in (130 mm), 123 off
Boiler pressure	250 psi (1.7 MPa)
Heating surface:
• Firebox	190 or 217 sq ft (17.7 or 20.2 m2)
• Tubes and flues	2,299 sq ft (213.6 m2)
Superheater:;
• Heating area	584 sq ft (54.3 m2)
Cylinders	4
Cylinder size	16+1⁄4 in × 28 in (413 mm × 711 mm)
Valve gear	Walschaerts
Maximum speed
Performance figures
Maximum speed	25 mph (40 km/h) - (heritage railways) 45 mph (72 km/h) - (main line, tender first) 75 mph (121 km/h) - (main line, chimney first)
Tractive effort	40,286 lbf (179.20 kN)
Operators
Career
Operators	London, Midland and Scottish Railway; British Railways;
Power class	7P reclassified 8P in 1951
Locale	London Midland Region
Withdrawn	October 1962
Current owner	6201 Princess Elizabeth Locomotive Society Ltd
Disposition	Undergoing Overhaul

6201 Princess Elizabeth is a preserved steam locomotive in England. It is one of two preserved LMS Princess Royal Class; the other being 46203 Princess Margaret Rose.