LSWR H15 class

Specifications
Specifications
Configuration:;
• Whyte	4-6-0
• UIC	2′C h2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	3 ft 7 in (1.092 m)
Driver dia.	6 ft 0 in (1.829 m)
Length	65 ft 6+3⁄4 in (19.98 m)
Loco weight	Various – 79 long tons 19 hundredweight (81.2 t) to 82 long tons 1 hundredweight (83.4 t)
Fuel type	Coal
Fuel capacity	5 long tons (5.1 t; 5.6 short tons)
Water cap.	5,000 imp gal (23,000 L; 6,000 US gal)
Boiler pressure	New: 180 psi (1.24 MPa); Rebuilt E14: 175 psi (1.21 MPa);
Cylinders	Two, outside
Cylinder size	21 in × 28 in (533 mm × 711 mm)

Type and origin
Type and origin
Power type	Steam
Designer	Robert Urie
Builder	SR Eastleigh Works
Build date	1914 (11) 1924–1925 (15)
Total produced	26

LSWR H15 class
LSWR H15 class
	Official 1914 LSWR works photograph of Urie H15 class mixed-traffic locomotive No. 483 at Eastleigh. Smoke deflectors were fitted during the early 1930s.
Power type
Type and origin
Power type	Steam
Designer	Robert Urie
Builder	SR Eastleigh Works
Build date	1914 (11) 1924–1925 (15)
Total produced	26
Configuration:;
Specifications
Configuration:;
• Whyte	4-6-0
• UIC	2′C h2
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Leading dia.	3 ft 7 in (1.092 m)
Driver dia.	6 ft 0 in (1.829 m)
Length	65 ft 6+3⁄4 in (19.98 m)
Loco weight	Various – 79 long tons 19 hundredweight (81.2 t) to 82 long tons 1 hundredweight (83.4 t)
Fuel type	Coal
Fuel capacity	5 long tons (5.1 t; 5.6 short tons)
Water cap.	5,000 imp gal (23,000 L; 6,000 US gal)
Boiler pressure	New: 180 psi (1.24 MPa); Rebuilt E14: 175 psi (1.21 MPa);
Cylinders	Two, outside
Cylinder size	21 in × 28 in (533 mm × 711 mm)
Tractive effort
Performance figures
Tractive effort	26,240 lbf (116.72 kN)
Operators
Career
Operators	London and South Western Railway; → Southern Railway; → British Railways;
Class	LSWR/SR: H15
Power class	LSWR / SR: A; BR: 4MT, later 4P5F;
Numbers	LSWR: 335, 482–491; SR: E330–E335, E473–E478, E482–E492, E521–E524 → 330–335, 473–478, 482–492, 521–524; BR: 30330–30335, 30473–30478, 30482–30491, 30521–30524;
Nicknames	Chonker, "Junior King Arthurs", "Cathedrals"
Locale	Southern Region
Withdrawn	1955–1961
Disposition	All scrapped

The LSWR/SR H15 class was a class of 2-cylinder 4-6-0 steam locomotives designed by Robert Urie for mixed-traffic duties on the LSWR. Further batches were constructed by Richard Maunsell for the Southern Railway after 1923. They were given the nickname of "Junior King Arthur" due to the size of their driving wheels, the S15 and their N15 cousins had driving wheels which had a diameter of 5 foot and 7 inches and 6 foot and 7 inches respectively.

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