British Rail Class 66

Specifications
Specifications
Configuration:;
• UIC	Co′Co′
• Commonwealth	Co-Co
Gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Bogies	EMD HTCR-E
Length	21.39 m (70 ft 2 in)
Width	2.63 m (8 ft 8 in)
Height	3.91 m (12 ft 10 in)
Loco weight	Original specification:; 127 t (125 LT; 140 ST); UIC II and EU Stage IIIA spec.:; 129.6 t (128 LT; 143 ST);
Fuel capacity	Original specification:; 8,180 L (1,799 imp gal; 2,161 US gal); UIC II and EU Stage IIIA spec.:; 5,670 L (1,247 imp gal; 1,498 US gal);
Sandbox cap.	EU Stage IIIA specification: 340 L (21,000 in3)
Prime mover	EMD 12N-710; Original specification:; 12N-710G3B-EC; UIC II specification:; 12N-710G3B-U2; EU Stage IIIA specification:; 12N-710G3B-T2;
Engine type	Two-stroke V12 diesel
Aspiration	Turbocharged
Displacement	139.6 L (8,520 in3)
Alternator	EMD AR8/CA6
Traction motors	6 × EMD D43TRC
MU working	AAR system
Train heating	None
Loco brake	Air
Train brakes	Air (Westinghouse PBL)
Safety systems	AWS; TPWS; ETCS;

Type and origin
Type and origin
Power type	Diesel-electric
Builder	GM Electro-Motive Division; (later Electro-Motive Diesel),; at London, Ontario, Canada, and Muncie, Indiana, USA
Model	JT42CWR
Build date	1998–2008; 2014–2015;
Total produced	480 from UK orders, excluding Series 66 imports

British Rail Class 66
British Rail Class 66
	A Class 66 at Eastleigh
Power type
Type and origin
Power type	Diesel-electric
Builder	GM Electro-Motive Division; (later Electro-Motive Diesel),; at London, Ontario, Canada, and Muncie, Indiana, USA
Model	JT42CWR
Build date	1998–2008; 2014–2015;
Total produced	480 from UK orders, excluding Series 66 imports
Configuration:;
Specifications
Configuration:;
• UIC	Co′Co′
• Commonwealth	Co-Co
Gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Bogies	EMD HTCR-E
Length	21.39 m (70 ft 2 in)
Width	2.63 m (8 ft 8 in)
Height	3.91 m (12 ft 10 in)
Loco weight	Original specification:; 127 t (125 LT; 140 ST); UIC II and EU Stage IIIA spec.:; 129.6 t (128 LT; 143 ST);
Fuel capacity	Original specification:; 8,180 L (1,799 imp gal; 2,161 US gal); UIC II and EU Stage IIIA spec.:; 5,670 L (1,247 imp gal; 1,498 US gal);
Sandbox cap.	EU Stage IIIA specification: 340 L (21,000 in3)
Prime mover	EMD 12N-710; Original specification:; 12N-710G3B-EC; UIC II specification:; 12N-710G3B-U2; EU Stage IIIA specification:; 12N-710G3B-T2;
Engine type	Two-stroke V12 diesel
Aspiration	Turbocharged
Displacement	139.6 L (8,520 in3)
Alternator	EMD AR8/CA6
Traction motors	6 × EMD D43TRC
MU working	AAR system
Train heating	None
Loco brake	Air
Train brakes	Air (Westinghouse PBL)
Safety systems	AWS; TPWS; ETCS;
Maximum speed
Performance figures
Maximum speed	Subclass /6: 65 mph (105 km/h); Remainder: 75 mph (120 km/h);
Power output	Total: 2,400 kW (3,200 hp); At rails: 1,850 kW (2,480 hp);
Tractive effort:;
• Starting	409 kN (92,000 lbf)
• Continuous	260 kN (58,000 lbf) at 15.9 mph (25.6 km/h)
Brakeforce	68 t (67 LT; 75 ST)
Operators
Career
Operators	Colas Rail; DB Cargo UK; Direct Rail Services; Freightliner; GB Railfreight;
Numbers	66001–66250; 66301–66305; 66411–66434; 66501–66599; 66601–66625; 66701–66799; 66846–66850; 66951–66957;
Nicknames	Shed
Axle load class	Route Availability 7
First run	2 June 1998
Disposition	In service
	References to "UIC II" and "EU Stage IIA" relate to emissions control regulations set by the UIC and EU, respectively. In general, and without regard for subsequent modifications, locomotives ordered before 31 December 2002 will be original specification, while those ordered after that date will be either UIC II or EU Stage IIA specification.

The Class 66 is a type of six-axle diesel-electric freight locomotive developed in part from the Class 59, for use on the railways of the UK. Since its introduction the class has been successful and has been sold to British and other European railway companies. In Continental Europe it is marketed as the EMD Class 66 (JT42CWR).

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