British Rail Class 03

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British Rail Class 03
D2069 at Doncaster Works.JPG
Class 03 D2069 at Doncaster Works open day on 27 July 2003
Type and origin
Power typeDiesel-mechanical
BuilderBR Swindon & Doncaster
Build date1957–1961
Specifications
Configuration:
 • Whyte0-6-0
 • UICC
Gauge4 ft 8 12 in (1,435 mm)
Wheel diameter3 ft 7 in (1.092 m)
Minimum curve2 chains (40 m)
Wheelbase9 ft 0 in (2.74 m)
Length26 ft 0 in (7.92 m)
Width8 ft 6 in (2.59 m)
Height11 ft 10 in (3.61 m)
Loco weight30.2 long tons (30.7 t)
Fuel capacity510 imp gal (2,300 l; 610 US gal)
Prime moverGardner 8L3
TransmissionWilson-Drewry CA5 R7, 5-speed epicyclic gearbox, RF11 spiral bevel reverse and final-drive unit.
Train heatingNone
Train brakesVacuum (some dual Air & Vacuum)
Performance figures
Top speed28.5 mph (45.9 km/h)
Power outputEngine: 204 hp (152 kW)
At rail: 152 hp (113 kW)
Tractive effortMax: 15,650 lbf (69.6 kN)
Brakeforce13 long tons-force (130 kN)
Career
Railroad(s)British Railways
Number11187–11209, 91, 92;
later D2000–D2199, D2370–D2399;
later 03004–03199, 03370–03399
Axle load classRA 1
Retiredfrom April 1968
DispositionOne still in service, over 50 preserved, most scrapped

The British Rail Class 03 locomotive is, together with Class 04, one of BR's most successful smaller 0-6-0 diesel-mechanical shunters. There are 230 members of the class and it was built by British Railways' Swindon and Doncaster works in 1957-1962. They are numbered D2000-D2199 and D2370-D2399 (later 03004 to 03399). D2370 and D2371 were used as departmental locomotives and originally numbered 91 and 92 respectively.