British Rail Class 77

British Rail Class 77
Preserved locomotive no. 27000 in original black livery
Type and origin
Power typeElectric
BuilderBR Gorton Works
Build date1953–1954
Total produced7
Specifications
Configuration:
​
 • UICCo′Co′
 • CommonwealthCo-Co
Gauge4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter3 ft 7 in (1.092 m)
Length59 ft 0 in (17.98 m)
Loco weight102.5 long tons (104.1 t; 114.8 short tons)
Electric system/s1500V DC Catenary
Current pickupsPantograph, x 2
Traction motorsMetropolitan-Vickers
Train heatingSteam generator
Loco brakeAir and electrical regenerative
Train brakesVacuum
Performance figures
Maximum speed90 mph (145 km/h)
Power output2,490 hp (1,857 kW)
Tractive effort45,000 lbf (200 kN)
Brakeforce85 long tons-force (847 kN)
Career
OperatorsBritish Railways
Numbers27000–27006
LocaleManchester–Sheffield–Wath line
RetiredSeptember 1968
DispositionAll sold to Netherlands as NS 1500 Class

The British Rail Class 77, also known as Class EM2, is a class of 1.5 kV DC, Co-Co electric locomotive. They were built by Gorton Works in 1953 and 1954 for use over the Woodhead Line, between Manchester and Sheffield.

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