British Rail Class D2/7

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British Rail Class D2/7
Hudswell D707 at the Rutland Railway 05-09-25 31.jpeg
A Hudswell Clarke industrial diesel locomotive similar to the British Rail Class D2/7
Type and origin
Power type Diesel-mechanical
Builder Hudswell Clarke
Serial number D898–D902, D938–D942
Build date 1955–1956
Specifications
Configuration:
 • Whyte 0-6-0 DM
 • UIC C
Gauge 4 ft 8 12 in (1,435 mm) standard gauge
Wheel diameter 3 ft 6 in (1.067 m)
Loco weight 36.35 long tons (36.93 t; 40.71 short tons)
Prime mover Gardner 8L3
Transmission Mechanical, SSS Powerflow three-speed gearbox
MU working Not fitted
Train heating None
Train brakes None
Performance figures
Maximum speed 14 mph (23 km/h)
Power output Engine: 204 bhp (152 kW)
Tractive effort 16,100 lbf (71.6 kN)
Career
Operators British Railways
Class D2/7; later 2/14; no TOPS class
Numbers 11116–11120, 11144–11148; D2500–D2509 from 1958 to 1962
Axle load class Route availability 4
Retired 1967
Disposition All scrapped

British Rail Class D2/7 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 three-speed Power-flow SSS (synchro-self-shifting) gearbox,[1] was a Hudswell Clarke speciality.

Appearance[edit]

The D2/7 was of old-fashioned appearance with a full-height engine casing and a small, steam locomotive-type chimney. The later British Rail Class D2/12, although mechanically similar, was of more modern appearance.

Modelling[edit]

A kit is available from Invertrain [2] in 7 mm Scale ( O Gauge)

Mercian Models [3] make kits for this locomotive and the very similar industrial version, in both 4 mm and 7 mm scale.

See also[edit]

List of British Rail classes

References[edit]

Sources[edit]

  • Ian Allan ABC of British Railways Locomotives, winter 1962/3 edition, page 199