LMS Ivatt Class 2 2-6-2T

From Wikipedia, the free encyclopedia

LMS Ivatt Class 2 2-6-2T

41248 departing Highbridge with a passenger train
Power type	Steam
Designer	H. G. Ivatt
Builder	LMS & BR Crewe Works BR Derby Works
Build date	1946–1952
Total production	130
Configuration	2-6-2T
UIC classification	1'C1'ht
Gauge	4 ft 8½ in (1,435 mm)
Leading wheel size	36 in (0.914 m)
Driver size	60 in (1.524 m)
Trailing wheel size	36 in (0.914 m)
Wheelbase	30 ft 3 in
Length	38 ft 9½ in
Locomotive weight	63.25 long tons (64.3 t) 41290–41329: 65.20 long tons (66.2 t)
Fuel type	Coal
Fuel capacity	3 long tons (3.0 t)
Water capacity	1,350 imp gal (6,100 l)
Boiler	LMS type 7
Boiler pressure	200 psi (1.38 MPa)
Fire grate area	17.5 sq ft (1.63 m²)
Heating surface: Tubes	924 sq ft (85.8 m²)
Heating surface: Firebox	101 sq ft (9.4 m²)
Superheater area	134 sq ft (12.4 m²) or 124 sq ft (11.5 m²)
Cylinders	Two, outside
Cylinder size	16×26 in (406×660 mm)
Tractive effort	00,001 lbf (0.00 kN)
Class	LMS: 2P BR: 2MT
Retired	1962–1967

The London, Midland and Scottish Railway (LMS) Ivatt Class 2 2-6-2T is a class of light mixed traffic steam locomotive introduced in 1946.

Contents 1 Background 2 Construction 3 Service 4 Preservation 5 Models 6 Fiction 7 External links 8 References

[edit] Background

The LMS had various elderly tank engines and the operating department required a new small class 2 locomotive to replace them. Noting that the Great Western Railway 4500 and 4575 Classes of 2-6-2T ('Prairie') had been successful, George Ivatt designed the new engine type incorporating self-emptying ashpans and rocking grates which were labour-saving devices. A tender version, the Ivatt Class 2 2-6-0 was also produced. The LMS classified them as 2P, but BR preferred the classification 2MT. Enthusiasts often nickname them 'Midland Prairies.'^{[citation needed]}

[edit] Construction

The class was introduced between 1946 and 1952. They were based on the LMS Stanier 2-6-2T which was, in turn, based on the LMS Fowler 2-6-2T. Ten were built by the LMS before nationalisation in 1948, and were numbered 1200-9. British Railways added the prefix '4' to their numbers so they became 41200-9. A further 120 were built by BR, numbers 41210-329. Most were built at Crewe but the last ten were built at Derby. Fifty engines were fitted with push-pull equipment, these being Nos. 41210-20, 41270-89 and 41320-9.

Number		Date	Lot no.	Built at	Notes
LMS	BR
1200-8	41200-8	1946	181	Crewe
1209	41209	1947	181	Crewe
-	41210-20	1948	195	Crewe	Push-pull fitted
-	41221-9	1948	195	Crewe	41222 was push-pull fitted. It was used on the Newport Pagnell branch until its closure in 1964.
-	41230-59	1949	204	Crewe
-	41260-9	1950	209	Crewe
-	41270-89	1950	209	Crewe	Push-pull fitted
-	41290-9	1951	225	Crewe
-	41300-19	1952	225	Crewe
-	41320-9	1952	225	Derby	Push-pull fitted

[edit] Service

The last thirty Crewe-built engines, 41290-41319 were allocated to the Southern Region from new. The rest were London Midland Region engines. They spent their lives mostly on branch line work.

The design formed the basis for the BR standard class 2 2-6-2T (numbers 84000-29), which were built to a slightly smaller loading gauge and so have slanted cab sides. These engines also incorporate a fallplate and fittings common to many BR standard classes, such as the chimneys.

All engines were withdrawn between 1962 and 1967.

[edit] Preservation

Four have survived to preservation, and now work on heritage railway lines:

• 41241
• 41298
• 41312
• 41313

No.41241 is particularly associated with the Keighley and Worth Valley Railway and when initially preserved was painted in a fictitious maroon livery with K&WVR on the tanks, though it was later restored to more conventional BR black.

During October 2006, the Ivatt Trust loaned the unrestored no. 41313 to the Isle of Wight Steam Railway; who will restore it when time allows.

Number	Location	Condition	Preserved locomotive database (external link)	Home railway (external link)
41241	Keighley and Worth Valley Railway	Operational	41241	[1]
41298	Buckinghamshire Railway Centre	Under overhaul	41298	[2]
41312	Mid-Hants Railway	Operational	41312	[3]
41313	Isle of Wight Steam Railway	Awaiting restoration	41313	[4]

[edit] Models

Bachmann produced a 00 gauge model in various liveries. Dapol have released a model in British N gauge.

[edit] Fiction

An engine of this prototype was featured in the TV series Thomas the Tank Engine and Friends as the character 'Arthur'.

[edit] External links

• Railuk database
• Southern e-group photos
• Some photos of 41312 on the East Somerset Railway

[edit] References

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

v • d • e London, Midland and Scottish Railway locomotives Hughes: 5MT Crab Fowler: 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: 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 Kitson: 0F 0-4-0ST Fairburn: 4MT 2-6-4T Ivatt: 2MT 2-6-0 · 2MT 2-6-2T · 4MT 2-6-0 British Railways steam locomotives · GWR locomotives · LMS locomotives · LNER locomotives · Southern Railway locomotives