CLASS 71

TOPS number range:

71001-71014

Former number range:

E5000-E5024 (Note: 1)

SR classiication:

HA

Built by:

BR Doncaster

Introduced:

1959-1960

Wheel arrangement:

Bo-Bo

Weight - operational:

77 tons

Height - pan down:

13ft 1in

Width:

8ft 11in

Length:

50ft 7in

Min curve negotiable:

4 chains

Maximum speed:

90mph

Wheelbase:

37ft 6in

Bogie wheelbase:

10ft 6in

Bogie pivot centres:

27ft

Wheel diameter:

4ft

Brake type:

Dual

Sanding equipment:

Pneumatic

Heating type:

Electric

Route availability:

6

Multiple coupling restriction:

Not multiple fitted

Brake force:

41 tonnes

Horsepower - continuous
Horsepower - maximum

2,552hp
3,000hp

Tractive Effort - maximum:

43,0001b

Number of traction motors:

4

Traction motor type:

EE 532A

Control system:

DC Booster EE836

Auxiliary generator:

EE 910B

Gear ratio:

76:22

Pantograph type:

Cross-Arm

Nominal Supply Voltage:

660-750V dc