LMS Ivatt Class 2 2-6-2T

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LMS Ivatt Class 2 2-6-2T
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
A rear view of 41296 at Highbridge
A rear view of 41296 at Highbridge
An unidentified Ivatt 2-6-2T passing Churchland with a milk train.
An unidentified Ivatt 2-6-2T passing Churchland with a milk train.
41244 in the company of an [[LNER Thompson Class B1]] 61306 at Low Moor shed, 1966/7
41244 in the company of an [[LNER Thompson Class B1]] 61306 at Low Moor shed, 1966/7

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

[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

Preserved 41312
Preserved 41312
41241 from the rear, showing the shape of the bunker
41241 from the rear, showing the shape of the bunker

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

[edit] References

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


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London, Midland and Scottish Railway locomotives
Hughes:
Fowler:
Stanier:
Kitson:
Fairburn:
Ivatt:

2MT 2-6-0 · 2MT 2-6-2T · 4MT 2-6-0
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