British Rail Class D3/6

Class D3/6 were diesel shunters built in 1935 by English Electric for the London, Midland and Scottish Railway. They were the first of a new design of diesel shunters based on the English Electric 6K of 350 horsepower (260 kW) diesel engine. Similar prototypes were built for the Southern Railway (SR1-3), Great Western Railway (GWR2), and London and North Eastern Railway (8000-8004). They were all substantially similar, with the long bonnet ("nose"), 0-6-0 wheel arrangement, EE 6K prime mover and 2 axle-hung traction motors. This configuration was repeated in most subsequent large diesel shunters built in Britain, such as the British Rail Class 11 and even more numerous British Rail Class 08 that entered service after World War II.

British Rail Class D3/6
7069 undergoing restoration
Type and origin
Power typeDiesel-electric
BuilderEnglish Electric at Hawthorn Leslie
Serial numberHL: 3841–3850, 3816
Build date1934 (7079), 1935 (7069-78)
Specifications
Configuration:
  Whyte0-6-0 DE
  UICC
Gauge4 ft 8 12 in (1,435 mm) standard gauge
Wheel diameter4 ft 0 12 in (1.232 m)
Loco weight51.45 long tons (52.28 t; 57.62 short tons)
Prime moverEnglish Electric 6K
Traction motorsEnglish Electric, 2 off
MU workingNot fitted
Train heatingNone
Performance figures
Maximum speed30 mph (48 km/h)
Power outputEngine: 350 hp (261 kW)
Tractive effort30,000 lbf (133.4 kN)
Career
OperatorsLondon, Midland and Scottish Railway,
War Department,
British Railways
ClassLMS: 0F; BR: D3/6
NumbersLMS 7069–7079;
BR 12000–12002
Axle load classRoute availability 5

Numbering

One demonstrator and ten production locomotives were built, numbered 7079 and 7069-7078 by the LMS. Three of these later became British Rail numbers 12000–12002 (previously 7074/76/79 respectively). The remainder were sold to the British War Department in 1940 and were shipped to France during World War II. Of these the first production locomotive, no. 7069, survived the war and was used in industrial service in France. It was later repatriated for preservation and is currently located at the Berkeley Vale Railway.[1]

Footnotes

  1. "First Locomotive arrives at Sharpness". Vale of Berkeley Railway. Retrieved 26 September 2015.

References

  • Strickland, David C. (September 1983). Locomotive Directory: Every Single One There Has Ever Been. Camberley, Surrey: Diesel and Electric Group. p. 48. ISBN 978-0-9063-7510-5. OCLC 16601890.

See also

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