British Rail Class D2/12

British Rail Class D2/12 was a locomotive commissioned by British Rail in England. It was a diesel powered locomotive in the pre-TOPS period built by Hudswell Clarke with a Gardner engine. The mechanical transmission, using a scoop control fluid coupling and four-speed Power-flow SSS (synchro-self-shifting) gearbox,[1] was a Hudswell Clarke speciality.

British Railways class D2/12
Type and origin
Power typeDiesel-mechanical
BuilderHudswell Clarke
Serial numberD1201–D1210
Build date1961
Total produced10
Specifications
Configuration:
​
 • Whyte0-6-0 DM
Gauge4 ft 8 1⁄2 in (1,435 mm) standard gauge
Wheel diameter3 ft 6 in (1.067 m)
Loco weight34.20 long tons (34.75 t)
Prime moverGardner 8L3
TransmissionMechanical, Bostock & Bramley four-speed gearbox
MU workingNot fitted
Train heatingNone
Performance figures
Top speed24 mph (39 km/h)
Power outputEngine: 204 bhp (152 kW)
Tractive effort16,100 lbf (71.6 kN)
Career
Railroad(s)British Railways
ClassD2/12; later 2/14A; no TOPS class
NumberD2510–D2519
Axle load classRoute availability 4
Retired1967
Disposition6 scrapped, 4 sold NCB (3 scrapped, 1 preserved)

References
  1. "Durham Mining Museum - Colliery Engineering". Archived from the original on 2007-09-28. Retrieved 2009-01-13.


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