British Rail Class 10

The British Rail Class 10 diesel locomotive was a version on the Class 08 diesel-electric shunter. A Blackstone diesel engine was fitted instead of one made by the English Electric company. Traction motors were by either the General Electric Company plc (GEC) or British Thomson-Houston (BTH).

British Rail Class 10
D3452, at Bodmin on 28 August 2003. This locomotive is preserved on the Bodmin & Wenford Railway
Type and origin Power type Diesel-electric Builder British Railways Darlington Works and Doncaster Works Build date 1953–1962 Total produced 161
Specifications Configuration: ​  • Whyte 0-6-0  • UIC C Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge Wheel diameter 4 ft 6 in (1.372 m) Wheelbase 11 ft 6 in (3.51 m) Length 29 ft 3 in (8.92 m) Width 8 ft 6 in (2.59 m) Height 12 ft 8+1⁄2 in (3.87 m) Loco weight 48.6 long tons (49.4 t) Fuel capacity 668 imp gal (3,040 L; 802 US gal) Prime mover Blackstone ER6T Traction motors D3152–D3166: BTH, 2 off Remainder: GEC nose suspended, 2 off Transmission DC generator, DC traction motors, double reduction gearing MU working Not fitted Train heating None Train brakes Vacuum
Performance figures Top speed 27.5 mph (44 km/h) Power output Engine: 350 hp (261 kW) Tractive effort Maximum: 35,000 lbf (155.7 kN) Continuous: 11,100 lbf (49.4 kN)
Career Railroad(s) British Railways Number 13137–13166; later D3137–D3166, D3439–D3453, D3473–D3502, D3612–D3651, D4049–D4094 Axle load class RA 5

The locomotives were built at the BR Works in Darlington and Doncaster over the period 1953-62. Early batches were classified D3/4 (those with GEC motors) and D3/5 (those with BTH motors).