British Rail Class 71

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British Rail Class 71
E5001 at Doncaster Works.JPG
E5001 at Doncaster Works.
Type and origin
Power type Electric
Builder British RailwaysDoncaster Works
Build date 1958–1960
Total produced 24
Specifications
Configuration:
 • Whyte Bo-Bo
 • UIC Bo'Bo'
Gauge 4 ft 8 12 in (1,435 mm) standard gauge
Wheel diameter 4 ft 0 in (1.219 m)
Loco weight 77.00 long tons (78.24 t)
Electric system/s 660–750 V DC
Current pickup(s) Third Rail (mainline)
Pantograph (sidings)
Traction motors English Electric 532, 4 off
Train heating Electric Train Heating
Train brakes Dual Vacuum and Air
Performance figures
Top speed 90 mph (145 km/h)
Power output One-hour: 2,700 hp (2,010 kW)
Continuous: 2,300 hp (1,720 kW)
Tractive effort 43,800 lbf (195,000 N)
Brakeforce 68 long tons-force (678 kN)
Career
Railroad(s) British Railways
Number E5000–E5023; later E5001–E5024; later 71001–71014
Axle load class Route availability 6
Disposition 10 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.