LMS 2-Cylindered Stanier 2-6-4T

LMS Stanier Class 4P 2-cylinder 2-6-4T

42444 at Bacup station, June 1959

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

Specifications
Configuration	2-6-4T
UIC class	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: • Firegrate area	26 ³⁄₄ sq ft (2.49 m²)
Boiler	LMS type 4C
Boiler pressure	200 lbf/in² (1.4 MPa)
Heating surface: • Tubes and flues	1,126 or 1,223 sq ft (104.6 or 113.6 m²)
• Firebox	139 or 143 sq ft (12.9 or 13.3 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

Performance figures
Tractive effort	24,670 lbf (109.7 kN)

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Withdrawn	1960–1967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 is a class of 206 steam locomotive built between 1935 and 1943. They were based on his LMS 3-Cylinder 2-6-4T.

Numbering

numbers		Lot No.	date built	Built at
LMS	BR	Lot No.	date built	Built at
2425–75	42425–75	128	1937	Derby
2476–94	42476–94	128	1936	Derby
2537–44	42537–44	127	1935	Derby
2545–2609	42545–609	133	1936	North British 24301–365
2610–17	42610–17	133	1937	North British 24365–373
2618–51	42618–51	144	1938	Derby
2652	42652	144	1939	Derby
2653	42653	148	1940	Derby
2654–62	42654–62	148	1941	Derby
2663–70	42663–70	148	1942	Derby
2671/2	42671/2	148	1943	Derby

The LMS numbered them 2425–94, and then 2537–672, BR adding 40000 to their numbers to make them 42425–94, and then 42537–672. The LMS classified them 4P, BR 4MT. They were the basis for the LMS Fairburn 2-6-4T.

Accidents and incidents

Main article: Irk Valley Junction rail crash

On 15 August 1953, locomotive No. 42474 was hauling a passenger train that overran signals and collided with an electric multiple unit at Irk Valley Junction, Manchester, Lancashire. The junction is on a viaduct, and one of the carriages of the electric multiple unit plunged 40 feet (12 m) into the River Irk. Ten people were killed and 58 were injured.^[1]

Film use

No 2429 had a starring role as Celia Johnson's branch line engine in the 1945 film Brief Encounter, which was made at Carnforth station during the winter of 1944–45. The BR numberplate (42429) was sold at a BR auction held in the old Refreshment Room at Southport Chapel Street station.

Withdrawal

The first withdrawal was in 1960, with the last in 1967. None has been preserved (though the original of the 3-Cylinder 2-6-4T version, number 2500, is preserved at the National Railway Museum, and two examples of the nearly identical LMS Fairburn 2-6-4T are also still in existence).

Table of withdrawals
Year	Quantity in service at start of year	Quantity withdrawn	Locomotive numbers
1960	206	2	42450/90.
1961	204	17	42427/28/38/67/71/75/79, 42539/45/49/52/70, 42627/35/37/48/69.
1962	187	43	42429/33/43/48/52/54/57/70/72/73/76/83, 42537/38/40/41/44/53/68/75/76/78–80/85/91/93/96/99, 42600/15/21/24/38/41/42/46/53/58/61/66/71/72.
1963	144	29	42425/40/58/66/69/80/85–87/91, 42543/47/56/57/61/63/71/82/92/95/98, 42603/17/32/36/43/55/59/68.
1964	115	51	42434/37/41/44–46/49/51/53/61/63/74/81/89/93, 42550/51/59/60/62/65/69/72/73/84/86/88/89/94, 42602/05/07/08/12/14/19/20/23/28–31/33/39/40/51/52/54/57/62/70.
1965	64	38	42426/30/32/35/39/42/47/56/59/60/64/65/68/77/78/82/22/92/94, 42542/54/55/58/64/66/67/90/97, 42601/04/09/18/26/34/45/49/60/67.
1966	26	11	42431/36/55/62/84, 42581/83, 42606/10/25/64.
1967	15	15	42546/48/74/77/87, 42611/13/16/22/44/47/50/56/63/65.

Models

Hornby Model Railways has released Stanier's 4MT as a 00 Gauge ready-to-run model. Two versions are to be released; one in LMS Black, the other in BR Black (early and late).

A pre-war O gauge model of this locomotive was produced by Marklin for Bassett-Lowke models in 1937; this continued in UK production by Winteringham until 1957. This model has been reproduced in O gauge by ACE Trains in 2009; both LMS and BR black versions have been manufactured.

References

Wikimedia Commons has media related to LMS Stanier Class 4 2-cylinder 2-6-4T.

↑ Earnshaw, Alan (1993). Trains in Trouble: Vol. 8. Penryn: Atlantic Books. p. 27. ISBN 0-906899-52-4.

Rowledge, J.W.P. (1975). Engines of the LMS built 1923–51. Oxford: Oxford Publishing Company. ISBN 0-902888-59-5.

London, Midland and Scottish Railway locomotives

Hughes (1923–1925)	5MT Crab

Fowler (1925–1931)	2P 4-4-0 2F Dock Tank 3MT 2-6-2T 3F Jinty 4P Compound 4MT 2-6-4T 4F 0-6-0 6P Patriot 7P Royal Scot 7F 0-8-0 Garratt 6399 Fury

Stanier (1932–1944)	2P 0-4-4T 3MT 2-6-2T 4MT 2-6-4T (2 cylinders) 4MT 2-6-4T (3 cylinders) 5MT 2-6-0 5MT Black Five 6P Jubilee 8P Princess Royal 8P Coronation 8F 2-8-0 Turbomotive

Fairburn (1944–1945)	4MT 2-6-4T

Ivatt (1945–1947)	2MT 2-6-0 2MT 2-6-2T 4MT 2-6-0 NCC Class WT 2-6-4 Diesels 10000–10001

Diesel shunters	1831 7050 7051 7052 7053 7054 7055–7056 7057 7058 7059–7068 7069–7079 7080–7119 7120–7129

Other designs	ROD 2-8-0 Kitson 0-4-0ST Sentinels 7160–7163 Sentinel 7164 Sentinel 7192

British Railways steam locomotives GWR locomotives LMS locomotives LNER locomotives Southern Railway locomotives

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