British Rail Class 71

British Rail Class 71/2
E5001 at Doncaster Works.
Type and origin
Power typeElectric
BuilderBritish Railways’ Doncaster Works
Build date1958–1960
Total produced24
Specifications
Configuration:
​
 • WhyteBo-Bo
 • UICBo'Bo'
Gauge4 ft 8 1⁄2 in (1,435 mm) standard gauge
Wheel diameter4 ft 0 in (1.219 m)
Loco weight77.00 long tons (78.24 t)
Electric system/s660–750 V DC
Current pickup(s)Third Rail (mainline)
Pantograph (sidings)
Traction motorsEnglish Electric 532, 4 off
Train heatingElectric Train Heating
Train brakesDual Vacuum and Air
Performance figures
Top speed90 mph (145 km/h)
Power outputOne-hour: 2,700 hp (2,010 kW)
Continuous: 2,300 hp (1,720 kW)
Tractive effort43,800 lbf (195,000 N)
Brakeforce68 long tons-force (678 kN)
Career
Railroad(s)British Railways
NumberE5000–E5023; later E5001–E5024; later 71001–71014
Axle load classRoute availability 6
Disposition10 rebuilt to class 74, 13 scrapped, 1 preserved


The British Rail Class 71 was an electric locomotive used on the Southern Region of British Railways. Unlike most other Southern Region electric locomotives (such as the class 73s & 74s) they could not operate away from the electrified (750 V DC third rail) system.


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