British Rail Class D1/3

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British Rail Class D1/3
Type and origin
Power typeDiesel-mechanical
BuilderRuston & Hornsby
Serial number390774, 390777
Build date1956
Total produced2
 • Whyte0-4-0 dm
Gauge4 ft 8 12 in (1,435 mm) standard gauge
Wheel diameter3 ft 4 in (1.016 m)
Loco weight28.00 long tons (28.45 t)
Prime moverRuston 6VPHL
TransmissionMechanical, Ruston gearbox
MU workingNot fitted
Train heatingNone
Train brakesNone
Performance figures
Top speed15 mph (24 km/h)
Power outputEngine: 165 bhp (123 kW)
Tractive effort14,350 lbf (63.8 kN)
Railroad(s)British Railways
ClassDY5, later D1/3, later 1/16. No TOPS class.
Number11507, 11508; D2957, D2958 from 1958
Axle load classRoute availability 3
DispositionOne sold for industrial use, one scrapped.

British Rail Class D1/3 (formerly DY1) was a locomotive commissioned by British Rail in England. It was a diesel powered locomotive in the pre-TOPS period built by Ruston & Hornsby.