Preserved locomotive 84001 on display at Crewe Works open day on 11 September 2005
Type and origin
Power type
Electric
Builder
North British Locomotive Company
Order number
L91[1]
Build date
1960–1961
Total produced
10
Specifications
Configuration:
• AAR
B-B
• UIC
Bo′Bo′
• Commonwealth
Bo-Bo
Gauge
4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter
4 ft 0 in (1.219 m)[2]
Wheelbase
39 ft 6 in (12.04 m)[2]
Length:
• Over beams
53 ft 6+1⁄2 in (16.32 m)[2]
Width
8 ft 8+1⁄4 in (2.648 m)[2]
Height:
• Pantograph
13 ft 0+9⁄16 in (3.977 m)[2]
• Body height
12 ft 4+1⁄4 in (3.766 m)[2]
Loco weight
76.60 long tons (77.83 t; 85.79 short tons)
Electric system/s
25 kV AC Catenary
Current pickup(s)
Pantograph
Traction motors
4 × GEC WT501[3]
Gear ratio
25:74[3]
Train heating
Electric Train Heating
Train brakes
Vacuum; Dual from 1972[1]
Performance figures
Maximum speed
100 mph (160 km/h)
Power output:
• 1 hour
4 × 890 hp (660 kW)[3]
• Continuous
4 × 750 hp (560 kW)[3]
Tractive effort
50,000 lbf (220 kN)
Brakeforce
65.5 long tons-force (653 kN)
Career
Operators
British Rail
Numbers
E3036–E3045; later 84001–84010
Axle load class
Route availability 6
Retired
1979–1980
Disposition
One preserved, remainder scrapped
The British Rail Class 84 was a 25 kV AC electric locomotive that operated on the West Coast Main Line (WCML) of the London Midland Region.
The ten strong class was one of five prototype classes of electric locomotives built in the early stages of WCML electrification. Built between 1960 and 1961, the type was not a success, as they were beset by technical problems, and after several lengthy periods of storage, and unsuccessful attempts at resolving these problems, British Rail decided to withdraw the entire fleet between 1977 and 1980.
^ abWebb & Duncan 1979, p. 59
^ abcdefWebb & Duncan 1979, p. 58
^ abcdWebb & Duncan 1979, p. 54
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