British Rail Class 66

The Class 66 locomotive is a development of the Class 59 and used both on British and European railway networks—where it is marketed as EMD Series 66.

British Rail Class 66
66713 'Forest City' at Crewe Works
Type and origin Power type Diesel-electric Builder Electro-Motive Diesel Model JT42CWR or Series 66 Total produced Still in production (508+)
Specifications Configuration: ​  • Whyte Co-Co  • UIC Co'Co' Gauge 4 ft 8 1⁄2 in (1,435 mm) standard gauge Length 20.1 m (65 ft 11 in) Width 2.65 m (8 ft 8 in) Height 3.9 m (12 ft 10 in) Loco weight 129.6 tonnes (127.6 long tons; 142.9 short tons) Fuel capacity 6,400 litres (1,400 imp gal; 1,700 US gal) Prime mover EMD 12N-710G3B-EC Class 66/9: EMD 12N-710G3B-T2 MU working AAR system (Classes 59, 66 & 67) Train heating None Train brakes Westinghouse PBL Air
Performance figures Top speed Class 66/6: 65 mph (105 km/h) Balance of fleet: 75 mph (121 km/h) Power output Engine: 3,000 bhp (2,200 kW) Tractive effort Maximum: 409 kN (91,900 lbf) at starting Continuous: 260 kN (58,500 lbf) at 15.9 mph (25.6 km/h)
Career Railroad(s) EWS Direct Rail Services Freightliner FirstGBRf Fastline Number 66001–66250, 66301–66305, 66401–66435, 66501–66599, 66601–66625, 66701–66732, 66951–66957 Nicknames ‘Shed’ Axle load class Route availability 7