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Class '73' Factfile

Power type: Electro-diesel   
6 - 73/0s built by British Railways at Eastleigh Works
43 - 73/1 built by English Electric at Vulcan Foundry, Newton Le Willows
Built: 1965, 1967-1969. 49 examples in total
Total Scrapped: 10

AAR wheel diameter: B-B
UIC Classification of locomotive axle arrangements: Bo'Bo
Commonwealth Bo-Bo

Gauge: 4 ft 8 1⁄2 in (1,435 mm) standard gauge
Wheel diameter: 3 ft 4 in (1.016 mm)
Length: 16.36m (53 ft 8 in)

Loco Weight:
73/0: 76.30 long tons (77.52 t; 85:46 short tons)
73/1: 76.80 long tons (78.03 t; 86.02 short tons)

Electric Systems: 660-750 V DC Third Rail using Contact shoe as pickup

Prime Mover: 
English Electric 4SRKT MK II
2 x Cummins QSK19 (73951 and 73952)
MTU 8V 4000 R43L (73961 - 73971)

Traction motors:
73/0: EE 542A
73/1: EE 546/1B

Train brakes: Vacuum Air and Electro-Pneumatic

Maximum speed:
73/0: 80 mph (129 km/h)
73/1: 90 mph (145 km/h)

Power output:
Electric (continuous): 1,420 hp (1,059 kW)
Electric (one-hour): 1,600 hp (1,193 kW)
Engine: 600 hp (447 kW)

Traction effort:
73/0 (electric): 42,000 lbf (186.8 kN)
73/0 (diesel): 34,100 lbf (151.7 kN)
73/1 (electric): 40,000 lbf (177.9 kN)
73/1 (diesel): 36,000 lbf (160.1 kN)

Right: I was flattered that my photograph at Westwell Leacon of 73962 powering a Network Rail test train made the front cover of Modern Locomotives illustrated magazine titled 'Class 73s - The New Era'. Colin Marsden has produced two fabulous MLI magazines covering the entire history of the Class '73' fleet and is a highly recommended purchase to any avid railway enthusiast.

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Please note that all photographs contained on this website are the sole copyright of Jamie Squibbs and may not be copied or reused without written permission. If you wish to use a photograph for commercial, media or personal use please feel free to contact me and I will be more than happy to help.

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