British Railways class D2/12
D2511, preserved at the Keighley and Worth Valley Railway
Type and origin Power type Diesel-mechanical Builder Hudswell Clarke Serial number D1201–D1210 Build date 1961 Total produced 10
Specifications Configuration: ​  • Whyte 0-6-0 DM Gauge 4 ft 8+1⁄2 in (1,435 mm)standard gauge Wheel diameter 3 ft 6 in (1.067 m) Loco weight 34.20long tons (34.75 t; 38.30short tons) Prime mover Gardner 8L3 Transmission fluid coupling andBostock & Bramley four-speedPower-flow SSSsynchro-self-shiftinggearbox[1] MU working Not fitted Train heating None
Performance figures Maximum speed 24 mph (39 km/h) Power output Engine: 204 bhp (152 kW) Tractive effort 16,100 lbf (71.6 kN)
Career Operators British Railways Class D2/12; later 2/14A; no TOPS class Numbers D2510–D2519 Axle load class Route availability 4 Retired 1967 Disposition 6 scrapped, 4 soldNCB (3scrapped, 1 preserved)

British Rail Class D2/12 was a class of ten locomotives commissioned byBritish Railways in England. They werediesel powered locomotives in the pre-TOPS period built byHudswell Clarke with aGardner engine. The mechanical transmission, using a scoop controlfluid coupling and four-speedPower-flow SSS (synchro-self-shifting) gearbox,^[1] was a Hudswell Clarke speciality.

The D2/12 was mechanically similar to the earlierBritish Rail Class D2/7 but was of more modern appearance. The engine casing was lower, giving much better all-round visibility.

D2519 was employed atNCBHatfield Main,Doncaster,South Yorkshire^[2] as a shunter. It was located there until at least 1984.

D2511 is preserved at theKeighley & Worth Valley Railway.^[3]

• List of British Rail classes

Wikimedia Commons has media related toBritish Rail Class D2/12.

• Ian Allan ABC of British Railways Locomotives, 1966 edition, page 81
• Strickland, David C. (1982).Locomotive Directory, every single one there has ever been. Camberley, Surrey: Diesel & Electric Group. p. 41.ISBN 0-906375-10-X.

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