British Rail Class D3/1

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British Rail Class D3/1
Type and origin
Power type Diesel-hydraulic
Builder North British Locomotive Company
Serial number 27751–27761, 27995–27997
Build date 1958–1959
Total produced 14
 • Whyte 0-4-0 DH
 • UIC B
Gauge 4 ft 8 12 in (1,435 mm) standard gauge
Wheel diameter 3 ft 9 in (1.143 m)
Loco weight 36.00 long tons (36.58 t; 40.32 short tons)
Prime mover NBL/MAN W6V17.5/22AS (supercharged)
Transmission Hydraulic, Voith
MU working Not fitted
Train heating None
Performance figures
Maximum speed 20 mph (32 km/h)
Power output Engine: 330 bhp (246 kW)
Tractive effort 24,100 lbf (107.2 kN)
Operators British Railways
Class D3/1; later 3/4; no TOPS class
Numbers D2900–D2913
Axle load class Route availability 5
Retired February 1967
Disposition All scrapped

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. They were introduced in 1958 and numbered D2900-D2913.[1]

See also[edit]


  • Ian Allan ABC of British Railways Locomotives (Winter 1962/3 ed.). p. 203.