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 similar Hudswell Clarke locomotive (D707) shown in 2005
Type and origin
Power typeDiesel-mechanical
Builder Hudswell Clarke
Serial numberD898–D902, D938–D942
Build date1955–1956
Specifications
Configuration:
   Whyte 0-6-0 DM
   UIC C
Gauge 4 ft 8+12 in (1,435 mm) standard gauge
Wheel diameter3 ft 6 in (1.067 m)
Loco weight36.35 long tons (36.93  t; 40.71 short tons)
Prime mover Gardner 8L3
TransmissionMechanical, SSS Powerflow three-speed gearbox
MU working Not fitted
Train heatingNone
Train brakes None
Performance figures
Maximum speed14 mph (23 km/h)
Power outputEngine: 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
Numbers11116–11120, 11144–11148; D2500–D2509 from 1958 to 1962
Axle load class Route availability 4
Retired1967
DispositionAll 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.

Contents

History

Ten locomotives were bought by British Railways in two batches of five, for use in Birkenhead Docks. The first batch, Hudswell Clarke works numbers D898–D902, entered service as British Railways nos. 11116–20 between December 1955 and February 1956; they were originally painted black, but repainted green later on. The second batch, Hudswell Clarke works numbers D938–D942, entered service as British Railways nos. 11144–48 between April and July 1956; this batch were painted green from new. Between May 1958 and January 1962, all ten were renumbered D2500–9 in the same order as their original numbers. Withdrawal from service occurred between February and November 1967, and the locomotives were scrapped between August 1967 and June 1969. [2] [3] [4]

Modelling

A kit is available from Invertrain [5] in 7 mm Scale (O Gauge)

Mercian Models [6] make kits for this locomotive and the very similar industrial version, in both 4 mm and 7 mm scale.

See also

References

  1. "Durham Mining Museum – Colliery Engineering". dmm.org.uk.
  2. Marsden, Colin J. (November 1984). BR Locomotive Numbering. Shepperton: Ian Allan. pp. 100–3. ISBN   0-7110-1445-0. EX/1184.
  3. Strickland, D.C. (March 1983). D+EG Locomotive Directory. Camberley: Diesel & Electric Group. p. 41. ISBN   0-906375-10-X.
  4. Haresnape, Brian (October 1984). British Rail Fleet Survey 7: Diesel Shunters. Shepperton: Ian Allan. p. 46. ISBN   0-7110-1449-3. GE/1084.
  5. "Invertrain Model Railways". invertrain.co.uk. Archived from the original on 6 October 2011.
  6. "Home". modelrailways.tv.

Sources