| LMS Ivatt Class 2 2-6-2T | |
|---|---|
| Locomotive 41231 being coaled by grab, while the fireman attends to the smokebox. Wellington Locomotive Depot, 12 April 1960 | |
| Power type | Steam |
| Designer | H. G. Ivatt |
| Builder | LMS & BR Crewe Works BR Derby Works |
| Build date | 1946–1952 |
| Total produced | 130 |
| Configuration | 2-6-2T |
| UIC classification | 1′C1′ h2t |
| Gauge | 4 ft 8 1⁄2 in (1,435 mm) |
| Leading wheel diameter |
36 in (0.914 m) |
| Driver diameter | 60 in (1.524 m) |
| Trailing wheel diameter |
36 in (0.914 m) |
| Wheelbase | 30 ft 3 in (9.22 m) |
| Length | 38 ft 9 1⁄2 in (11.82 m) |
| 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; 1,620 US gal) |
| Boiler | LMS type 7 |
| Boiler pressure | 200 psi (1.38 MPa) |
| Firegrate 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 | 17,400 lbf (77.40 kN) |
| Class | LMS: 2P BR: 2MT |
| Axle load class | Route Availability 1 |
| 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 |
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.
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 |
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.
Plans for this type of locomotive to replace the aging Adams O2 locomotives on the Isle of Wight had been arranged, however costs were deemed too high, and this did not occur. All engines were withdrawn between 1962 and 1967.
In 1957 No.41224 was the first train to pass along the old Stafford and Uttoxeter Railway since closure six years earlier, and the last before the track was dismantled. It was chartered by the Midland area of the Stephenson Locomotive Society and carried more than 220 railway enthusiasts.[1]
Four have survived to preservation, and now work on heritage railway lines:
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. It is the intention that 41298 will also be loaned to the Isle of Wight Steam Railway once restoration has been completed. These locomotives will need conversion to work with the air-braked stock used on the island. Ownership of these engines has now been transferred to the Isle of Wight Steam Railway.
| Number | Location | Condition | Preserved locomotive database (external link) |
Home railway (external link) |
|---|---|---|---|---|
| 41241 | Keighley and Worth Valley Railway | Operational | 41241 | [1] |
| 41298 | Isle of Wight Steam Railway | Under overhaul | 41298 | [2] |
| 41312 | Mid-Hants Railway | Awaiting overhaul | 41312 | [3] |
| 41313 | Isle of Wight Steam Railway | Awaiting restoration | 41313 | [4] |
Bachmann produced a 00 gauge model in various liveries. Dapol have released a model in British N gauge.
A locomotive of this class appeared in the TV series Thomas the Tank Engine and Friends as the character 'Arthur'.
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