British Rail Class 11

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British Rail Class 11
LMS English Electric 350hp diesel shunter 12104 (8312217300).jpg
12104 at Stratford MPD in July 1967
Type and origin
Power typeDiesel-electric
Builder LMS/BR Derby & BR Darlington
Build date1945–1952
Total produced120
Specifications
Configuration:
   Whyte 0-6-0 DE
   UIC C
Gauge 4 ft 8+12 in (1,435 mm) standard gauge
Wheel diameter4 ft 0+12 in (1.232 m)
Minimum curve 3.5 chains (70.41  m)
Wheelbase 11 ft 6 in (3.505 m)
Length29 ft 1+12 in (8.88 m)
Width8 ft 5 in (2.565 m)
Height12 ft 5+12 in (3.797 m)
Loco weight47.4 long tons (48.2  t; 53.1 short tons)
Fuel capacity660 imp gal (3,000 L; 790 US gal)
Prime mover English Electric 6KT
Generator English Electric 801 — 441 A, 430 V DC
Traction motors English Electric 506, DC, 2 off
Cylinders Straight 6
Transmission Diesel-electric, double reduction gearing
MU working Not fitted
Train heatingNone
Loco brake Air
Performance figures
Maximum speed20 mph (32 km/h)
Power outputEngine: 350  hp (261 kW)
Tractive effort Maximum: 34,900  lbf (155.2  kN)
Brakeforce32.2 long tons-force (321 kN)
Career
Operators
Number in class
  • WD: 14 (10 to NS)
  • LMS/BR: 106
Numbers
  • WD: 70260–70273
  • LMS: 7120–7129
  • BR: 12033–12138
Axle load class RA 5
Withdrawn1967–1972
Disposition9 currently preserved, 1 destroyed in preservation, remainder scrapped

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 1934 and 1936.

Contents

Overview

Numbering

An initial batch of twenty locomotives was built during World War II, fourteen of which were built for the War Department, with the first ten of these (70260–70269) subsequently going to the Nederlandse Spoorwegen post-war as NS 501–510. LMS numbers 7120–7126 went straight into LMS stock, and a follow-up batch was built, 7129 being the last diesel shunter to be built for the LMS. British Railways continued to build the class from 1948 to 1952, using numbers M7130–M7131 and 12045–12138. 7120–7129 and 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.

Export locomotives

Close to 100 almost identical machines were built by English Electric and supplied to Nederlandse Spoorwegen (NS) as their 500 Class & 600 Class diesel locomotives. In addition to the exported 501–510 mentioned above, 500 Class also included 511–545. Sixty-five of the 600 Class locomotives were built by English Electric between 1950 and 1957, numbered 601–665, at either Dick, Kerr & Co. Works (601–610) in Preston or Vulcan Foundry Works (remainder) in Newton-le-Willows. A further batch of 15 locomotives were exported without engines so that they could be fitted as such in the Netherlands. These were numbered 701–715.

Another export order was to Australia, with 16 locomotives built in 1951 but with the design modified for use on 5 ft 3 in gauge railways. The Victorian Railways bought ten, which were designated as F class, and six were bought by the State Electricity Commission of Victoria for shunting on sidings connected to Victorian Railways tracks. [1]

One member of Class 11 was built for transporting British soldiers in the former Nazi-occupied countries. Throughout the liberation period it travelled through France, Belgium and the Netherlands before finally reaching Germany. It was then used for transporting British troops and for shunting, and was occasionally used on a few branch lines until 1957. The reason for this was that after the war the newly founded Deutsche Bundesbahn was slowly building up its locomotive fleet. As the more powerful German engines began to roll out, the Class 11 diesel was used less and in 1953 it was withdrawn. It stood in Hamm Engine shed, in West Germany, until it was bought by Danish State Railways in 1957. It was then renumbered to DSB ML 6 and liveried in the dark green that the Danish diesel shunters were painted in. It served on shunting duties in Copenhagen yards until 1973, when it was finally withdrawn for good; it was scrapped in 1974 in Hedehusene in Denmark. [2]

Technical details

The diesel engine is an English Electric 6-cylinder, 10-inch bore by 12-inch stroke (254 mm by 305 mm); 4-stroke, 6KT and the traction motors are two: 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.

Withdrawal

The 106 locomotives of British Railways were withdrawn between May 1967 and November 1972.

Table of withdrawals [3]
YearQuantity in
service at
start of year
Quantity
withdrawn
Locomotive numbers
1967106512068, 12104/07/23/29.
19681011712034–37/39–44/72, 12119–20/24/26/37–38.
1969842412033/38/45–48/57/59/64/66–67/70/86/92/95,
12100/12/16 [a] –17/25/31/33/35.
1970601112050/54/62/81/89/91, 12101/06/14–15/28.
1971494012049/51–53/55–56/58/60–61/65/69/71/73
12075–78/80/82–85/87–88/90/93–94/97–99,
12102–03/05/08/11/18/21–22/36.
197291012063/74/79, 12103 [b] /09–10/27/30/32/34.
  1. accident damage
  2. reinstated January, withdrawn June

Post-BR use

Sixteen locomotives were sold to the National Coal Board, and were used in the North East England, South Wales and the Kent Coalfield. [4]

Locomotive NumberCompanyDisposition
12049Day & Son, Brentford Town Goods Depot [5] Scrapped
12052 National Coal Board (NCB), Widdrington Disposal Plant [5] Scrapped
12054A.R. Adams Ltd., Newport Docks [5] Scrapped
12060NCB, Philadelphia Loco Shed [5] Scrapped
12061NCB, Natgarw Coking Plant [5] Scrapped
12063NCB, Natgarw Coking Plant [5] Scrapped
12071NCB, Natgarw Coking Plant [5] Scrapped
12074NCB, Swalwell Disposal Point [5] Scrapped
Harry Needle Railroad Company (HNRC)
12082U.K.F. Fertilisers Ltd., Ince Marshes [5] Scrapped
12083Tilcon Ltd., Swinden Limeworks, Skipton. [5] Preserved - Battlefield Line
12084NCB, Bates Colliery [5] Scrapped
12088NCB, Swalwell Disposal Point [5] Preserved - Aln Valley Railway
HNRC
12093NCB, Widdrington Disposal Point [5] Scrapped
12098NCB, Philadelphia Loco Shed [5] Scrapped
HNRC
12099NCB, British Oak Disposal Point [5] Preserved - Severn Valley Railway
12119NCB, Philadelphia Loco Shed [5] Scrapped
12122NCB, British Oak Disposal Point [5] Scrapped
12131NCB, Snowdown Colliery [5] Preserved - North Norfolk Railway
12133NCB, Philadelphia Loco Shed [5] Scrapped

Preservation

12099 preserved on the Severn Valley Railway Bridgnorth - 12099 in the yard.JPG
12099 preserved on the Severn Valley Railway

Only one of the LMS examples is preserved being:

The following BR examples of Class 11 diesel shunters are preserved:

See also

Footnotes

  1. "F class d/e locomotives". www.victorianrailways.net. Retrieved 10 August 2008.
  2. "Rangerlokomotiv litra ML". www.jernbanen.dk.
  3. Strickland 1983, pp. 51–52.
  4. Strickland 1983, pp. 52.
  5. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Industrial Locomotives 1982 including preserved and minor railway locomotives. Industrial Railway Society. 1982. ISBN   0-901096-43-1.
  6. "End of the Line: Disposals-Class 11". www.wnxx.com. 1 November 2010. Archived from the original on 10 May 2012. Retrieved 30 March 2024.

References

Further reading