CLASS 73

Sub class

73/0

73/1

73/2

73/9

TOPS number range:

73001-73006

73101-142

73201-235

73901 and 73906

1957 BR number range:

E6001-E6006

E6007-E6049

From Class 73/1 fleet

From Class 73/0 fleet

Southern Region class codes:

JA

JB

JB

JA

Built by:

BR Eastleigh Carriage Works

English Electric, Vulcan Foundry

Modified by BR Stewrats Lane depot

Modified by BR Birkenhead depot

Years introduced:

1962

1965-67

1984-90

1995

Wheel arrangement:

Bo-Bo

Bo-Bo

Bo-Bo

Bo-Bo

Weight:

76 tonnes

77 tonnes

77 tonnes

76 tonnes

Height:

12ft 5 5/16in (3.79m)

12ft 5 5/16in (3.79m)

12ft 5 5/16in (3.79m)

12ft 5 5/16in (3.79m)

Length - buffers retracted: Length - buffers extended:

52ft 6in (16.00m)
53ft 8in (16.96m)

52ft 6in (16.00m)¶
53ft 8in (16.96m)

52ft 6in (16.00m)
53ft 8in (16.96m)

52ft 6in (16.00m)
53ft 8in (16.96m)

Width:

8ft 8in (2.64m)

8ft 8in (2.64m)

8ft 8in (2.64m)

8ft 8in (2.64m)

Wheelbase:

40ft 9in (12.42m)

40ft 9in (12.42m)

40ft 9in (12.42m)

40ft 9in (12.42m)

Bogie wheelbase:

8ft 9in (2.66m)

8ft 9in (2.66m)

8ft 9in (2.66m)

8ft 9in (2.66m)

Bogie pivot centres:

32ft 0in (11.27m)

32ft 0in (11.27m)

32ft 0in (11.27m)

32ft 0in (11.27m)

Wheel diameter:

3ft 4in (1.01m)

3ft 4in (1.01m)

3ft 4in (1.01m)

3ft 4in (1.01m)

Min curve negotiable:

4 chains (80.46m)

4 chains (80.46m)

4 chains (80.46m)

4 chains (80.46m)

Power supply:

660-850V dc third rail

660-850V dc third rail

660-850V dc third rail

660-850V dc third rail

Electric output (nom):

1,600hp (1,193kW)

1,600hp (1,193kW)

1,600hp (1,193kW)

1,600hp (1,193kW)

Electric power at rail (Cont): Electric power at rail(Max):

1,200hp (895kW)
2,450hp (1,830kW)

1,200hp (895kW)
3,150hp (2,350kW)

1,200hp (895kW)
3,150hp (2,350kW)

1,200hp (895kW)
2,450hp (1,830kW)

Engine type:

English Electric 4SRKT Mk2

English Electric 4SRKT Mk2

English Electric 4SRKT Mk2

English Electric 4SRKT Mk2

Engine output:

600hp (447kW)

600hp (447kW)

600hp (447kW)

600hp (447kW)

Diesel power at rail:

402hp (300kW)

402hp (300kW)

402hp (300kW)

402hp (300kW)

Electric tractive effort:

42,000lb (187kN)

40,000lb (179kN)

40,000lb (179kN)

42,000lb (187kN)

Diesel tractive effort:

34,100lb (152kN)

36,000lb (160kN)

36,000lb (160kN)

34,100lb (152kN)

Cylinder bore:

10in (0.25m)

10in (0.25m)

10in (0.25m)

10in (0.25m)

Cylinder stroke:

12in (0.30m)

12in (0.30m)

12in (0.30m)

12in (0.30m)

Maximum speed:

80mph (129km/h)

90mph (145km/h), later restricted to 60mph (97km/h)

90mph (145km/h)

60mph (97km/h)

Brake type:

Dual, with high level air pipes

Dual, with high level air pipes, some locos later modified to air brake only

Dual, with high level air pipes. All modified to air brake only

Dual, with high level air pipes

Brake force:

31 tonnes

31 tonnes

31 tonnes

31 tonnes

Route availability:

6

6

6

6

Heating type:

Electric - index 66#

Electric - index 66#

Electric - index 66#

Electric - index 66#

Multiple coupling type:

Electric, EMU jumpers
Diesel - blue star

Electric, EMU jumpers
Diesel - blue star

Electric, EMU jumpers
Diesel - blue star

Electric, EMU jumpers
Diesel - blue star

Main generator type:

EE824-3D

EE824-5D

EE824-5D

EE824-3D

Aux generator type:

EE908-3C

EE908-5C

EE908-5C

EE908-3C

Traction motor type:

EE542A

EE546-1B

EE546-1B

EE542A

No of traction motors:

4

4

4

4

Gear ratio:

63:17

61:19

61:19

63:17

Fuel tank capacity:

340gal (1,546lit)

310gal (1,409lit)

310gal (1,409lit)

340gal (1,546lit)

Sanding equipment:

Pneumatic

Pneumatic

Pneumatic

Pneumatic

Special fittings:

Drop-head buck-eye couplings, Loudaphone

Drop-head buck-eye couplings, Loudaphone 73118/130 fitted with Scharfenberg couplings for Eurostar UK use

Drop-head buck-eye couplings, Loudaphone

Drop-head buck-eye couplings, Loudaphone

  Present operators:

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FM Rail, South West Trains, European Passenger Services, Network Rail, Private owners

Gatwick Express, GBRf, South West Trains

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