British Rail Class D3/1

British Rail Class D3/1 was a locomotive commissioned by British Rail in England. It was a diesel powered locomotive in the pre-TOPS period built by the North British Locomotive Company. The NBL/MAN engines were built by the North British Locomotive Company in Scotland under licence from the German company MAN.

British Rail Class D3/1
Type and origin
Power typeDiesel-hydraulic
BuilderNorth British Locomotive Company
Serial number27751–27761, 27995–27997
Build date1958–1959
Total produced14
Specifications
Configuration:
​
 • Whyte0-4-0 DH
 • UICB
Gauge4 ft 8 1⁄2 in (1,435 mm) standard gauge
Wheel diameter3 ft 9 in (1.143 m)
Loco weight36.00 long tons (36.58 t)
Prime moverNBL/MAN W6V17.5/22AS (supercharged)
TransmissionHydraulic, Voith
MU workingNot fitted
Train heatingNone
Performance figures
Top speed20 mph (32 km/h)
Power outputEngine: 330 bhp (246 kW)
Tractive effort24,100 lbf (107.2 kN)
Career
Railroad(s)British Railways
ClassD3/1; later 3/4; no TOPS class
NumberD2900–D2913
RetiredFebruary 1967
DispositionAll scrapped


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