British Rail Class 70 (electric)

Specifications
Specifications
Configuration:;
• UIC	Co′Co′
• Commonwealth	Co-Co
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter	3 ft 6 in (1,067 mm)
Loco weight	20001/2: 99.70 long tons (101 t; 112 short tons); 20003: 104.70 long tons (106 t; 117 short tons);
Electric system/s	660–750 V DC Third rail (mainline); Catenary (sidings)
Current pickup(s)	Contact shoe (mainline), Pantograph (sidings)
Traction motors	English Electric 245, 6 off
Train brakes	Vacuum, Air, Electro-Pneumatic

Type and origin
Type and origin
Power type	Electric
Builder	SR Ashford Works (2); BR Brighton Works (1);
Build date	1941, 1945, 1948
Total produced	3

Southern Railway Class CC Electrics
British Rail Class 70
Southern Railway Class CC Electrics; British Rail Class 70
	20002 at the Eastleigh Works Open Day in August 1964
Power type
Type and origin
Power type	Electric
Builder	SR Ashford Works (2); BR Brighton Works (1);
Build date	1941, 1945, 1948
Total produced	3
Configuration:;
Specifications
Configuration:;
• UIC	Co′Co′
• Commonwealth	Co-Co
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter	3 ft 6 in (1,067 mm)
Loco weight	20001/2: 99.70 long tons (101 t; 112 short tons); 20003: 104.70 long tons (106 t; 117 short tons);
Electric system/s	660–750 V DC Third rail (mainline); Catenary (sidings)
Current pickup(s)	Contact shoe (mainline), Pantograph (sidings)
Traction motors	English Electric 245, 6 off
Train brakes	Vacuum, Air, Electro-Pneumatic
Maximum speed
Performance figures
Maximum speed	75 mph (121 km/h)
Power output	1,470 hp (1,100 kW)
Tractive effort	20001/2: 40,000 lbf (178 kN); 20003: 45,000 lbf (200 kN);
Operators
Career
Operators	Southern Railway; → British Railways;
Class	SR: CC; BR: 70;
Power class	BR: 7P5F
Numbers	SR: CC1, CC2; BR: 20001–20003;
Withdrawn	1968
Disposition	All scrapped in 1969

The British Rail Class 70 was a class of three third rail Co-Co electric locomotives. The initial two were built by the Southern Railway (SR) at Ashford Works in 1940–41 and 1945 and were numbered CC1 and CC2 - the Southern Railway latterly preferring French practice for locomotive numbers which also gave an indication of the wheel arrangement. Electrical equipment was designed by Alfred Raworth and the body and bogies by Oliver Bulleid. CC2 was modified slightly from the original design by C. M. Cock who had succeeded Raworth as electrical engineer. The third was built by British Railways in 1948 and numbered 20003.

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