British Rail Class 11
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| British Rail Class 11 | |
| Builder: | LMS/BR Derby & BR Darlington |
|---|---|
| Years built: | 1945 - 1952 |
| Early numbers: | 12033 - 12138 |
| TOPS numbers: | none |
| Number built: | 106 |
| Engine: | English Electric 6KT 6-cyl |
| Transmission: | Diesel-Electric |
| Wheel layout: | 0-6-0 |
| Wheel diameter: | 48.5 in (1,232 mm) |
| Minimum curve: | 3.5 chains (70 m) |
| Brakes: | Vacuum |
| Brake force: | 32.2 long tons (32.7 t) |
| Wheelbase: | 11 ft 6 in (3.5 m) |
| Length: | 29 ft 1.5 in (8.9 m) |
| Width: | 8 ft 5 in (2.6 m) |
| Height: | 12 ft 5.5 in (3.8 m) |
| Weight: | 47.4 long tons (48.2 t) |
| Maximum speed: | 20 mph (32 km/h) |
| Engine power: | 350 bhp (261 kW) |
| Maximum TE: | 34,900 lbf (155 kN) |
| Heating type: | none |
| Multiple working: | none |
| Fuel capacity: | 660 imp gal (3,000 l) |
| Route availability: | 5 |
| Operators: | HNRC heritage railways |
The British Rail Class 11 was applied to a batch of diesel shunting locomotives built from April 1945 to December 1952, based on a similar earlier batch built by the London, Midland and Scottish Railway (LMS) between 1939 and 1942.
Contents |
[edit] Overview
[edit] Numbering
LMS numbers 7120-7125 went to the War Department and then into LMS stock. LMS numbers 7126-7129 went straight into LMS stock, with 7129 being the last diesel shunter to be built for the LMS. British Railways continued to build the class from 1948-1952, being numbered M7130/1 and 12045-12138. 7120-7129, M7130 & M7131 became BR numbers 12033-12044. The whole class of 12033-12138 became Class 11. Locomotives up to 12102 were built at LMS/BR Derby and 12103-12138 at BR Darlington.
[edit] Export locomotives
Close to 100 almost identical machines were built by English Electric & supplied to the Nederlandse Spoorwegen (NS) as their 500 Class & 600 Class diesel locomotives. Sixty-five of the 600 Class locomotives were built, numbered 601-665. They were built by English Electric between 1950-1957 at either Dick, Kerr & Co. Works (601-610) in Preston, or Vulcan Foundry Works (rest) in Newton-le-Willows.
Another export order was to Australia as the Victorian Railways F class (diesel).
[edit] Technical details
The diesel engine is an English Electric 6-cylinder, 10 in bore by 12 in stroke (254 by 305 mm); 4-stroke, 6KT and the traction motors are 2 x EE506 axle-hung, nose-suspended, force-ventilated traction motors with 21.7:1 double reduction gear drive. The main generator is an English Electric EE801, 441 A at 430 V.
[edit] Post-BR use
The following locomotives are, or were, at Harry Needle Railroad Company (HNRC):
- 12074 Scrapped
- 12082 Operational. It has been re-registered as 01553, in TOPS Class 01/5. It carries both numbers
- 12088 Operational
- 12098 Scrapped
[edit] Preservation
The following Class 11 diesel shunters are preserved:
- 12049 at Watercress Line [1]
- 12052 at Caledonian Railway (Brechin)
- 12061 by Heritage Shunters Trust
- 12077 at Midland Railway, Butterley
- 12083 at Battlefield Line Railway
- 12093 at Caledonian Railway (Brechin)
- 12099 at Severn Valley Railway
- 12131 at North Norfolk Railway
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