British Rail Class D2/12

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British Railways class D2/12
Power type Diesel-mechanical
Builder Hudswell Clarke
Serial number D1201–D1210
Build date 1961
Total production 10
Configuration 0-6-0 DM
Gauge ft 8+12 in (1,435 mmstandard gauge
Wheel diameter 3 ft 6 in (1.067 m)
Locomotive weight 34.20 long tons (34.75 t)
Prime mover Gardner 8L3
Transmission Mechanical, Bostock & Bramley four-speed gearbox
Multiple working Not fitted
Top speed 24 mph (39 km/h)
Power output Engine: 204 bhp (152 kW)
Tractive effort 16,100 lbf (71.6 kN)
Train heating None
Career British Railways
Class D2/12; later 2/14A; no TOPS class
Number D2510–D2519
Axle load class Route availability 4
Retired 1967
Disposition 6 scrapped, 4 sold NCB (3 scrapped, 1 preserved)

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.

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