British Rail Class 40

Specifications
Specifications
Configuration:;
• UIC	(1′Co)(Co1′)
• Commonwealth	1Co-Co1
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter	Driving: 3 ft 9 in (1.143 m); Idling: 3 ft 0 in (0.914 m)
Minimum curve	4.5 chains (91 m)
Wheelbase	61 ft 3 in (18.67 m)
Length	69 ft 6 in (21.18 m)
Width	9 ft 0 in (2.74 m)
Height	12 ft 10 in (3.91 m)
Loco weight	133 long tons (135 t; 149 short tons)
Fuel capacity	710 imp gal (3,200 L; 850 US gal)
Lubricant cap.	140 gal (636 l)
Coolant cap.	710 gal (3,250l)
Prime mover	English Electric 16SVT MkII
Engine type	V16 Diesel Engine
Generator	DC generator English Electric 822/4C
Traction motors	DC traction motors English Electric 526/5D or EE526/7D
Transmission	Diesel-electric transmission
MU working	★ Blue Star
Train heating	Steam
Train brakes	Vacuum; later Dual (Air & Vacuum)
Safety systems	AWS

Type and origin
Type and origin
Power type	Diesel-electric
Builder	English Electric at Vulcan Foundry (180); Robert Stephenson and Hawthorns (20);
Build date	1958–1962
Total produced	200

English Electric Type 4
British Rail Class 40
English Electric Type 4; British Rail Class 40
	A Class 40 at Ayr.
Power type
Type and origin
Power type	Diesel-electric
Builder	English Electric at Vulcan Foundry (180); Robert Stephenson and Hawthorns (20);
Build date	1958–1962
Total produced	200
Configuration:;
Specifications
Configuration:;
• UIC	(1′Co)(Co1′)
• Commonwealth	1Co-Co1
Gauge	4 ft 8+1⁄2 in (1,435 mm) standard gauge
Wheel diameter	Driving: 3 ft 9 in (1.143 m); Idling: 3 ft 0 in (0.914 m)
Minimum curve	4.5 chains (91 m)
Wheelbase	61 ft 3 in (18.67 m)
Length	69 ft 6 in (21.18 m)
Width	9 ft 0 in (2.74 m)
Height	12 ft 10 in (3.91 m)
Loco weight	133 long tons (135 t; 149 short tons)
Fuel capacity	710 imp gal (3,200 L; 850 US gal)
Lubricant cap.	140 gal (636 l)
Coolant cap.	710 gal (3,250l)
Prime mover	English Electric 16SVT MkII
Engine type	V16 Diesel Engine
Generator	DC generator English Electric 822/4C
Traction motors	DC traction motors English Electric 526/5D or EE526/7D
Transmission	Diesel-electric transmission
MU working	★ Blue Star
Train heating	Steam
Train brakes	Vacuum; later Dual (Air & Vacuum)
Safety systems	AWS
Maximum speed
Performance figures
Maximum speed	90 mph (140 km/h)
Power output	Engine: 2,000 bhp (1,490 kW); At rail: 1,550 hp (1,160 kW)
Tractive effort:;
• Starting	Maximum: 52,000 lbf (231 kN) at 21.1% adhesion
• Continuous	Continuous 30,900 lbf (137 kN) at 18 mph (29 km/h)
Brakeforce	51 long tons-force (508 kN)
Operators
Career
Operators	British Rail
Numbers	D200–D399, later 40 001–40 199
Nicknames	Whistler
Axle load class	Route availability 6
Withdrawn	1967 (1), 1976-1988
Disposition	Seven preserved, remainder scrapped

The British Rail Class 40 is a type of British railway diesel electric locomotive. A total of 200 were built by English Electric between 1958 and 1962. They were numbered D200-D399. Despite their initial success, by the time the last examples were entering service they were already being replaced on some top-level duties by more powerful locomotives. As they were slowly relegated from express passenger uses, the type found work on secondary passenger and freight services where they worked for many years. The final locomotives ended regular service in 1985. The locomotives were commonly known as "Whistlers" because of the distinctive noise made by their turbochargers.