CLASS 50

Sub class:

50/0

50/1

TOPS number range:

50001-50050

50149

1957 BR number range:

D400-D449

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Former class codes:

27/3

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Built by:

English Electric Vulcan Foundry

Rebuilt by Laira depot

Years introduced:

1967-68

1987

Wheel arrangement:

Co-Co

Co-Co

Weight:

117 tonnes

117 tonnes

Height:

12ft 10 3/4in (3.95m)

12ft 10 3/4in (3.95m)

Length:

68ft 6in (20.87m)

68ft 6in (20.87m)

Width:

9ft 1 1/4in (2.77m)

9ft 1 1/4in (2.77m)

Wheelbase:

56ft 2in (17.11m)

56ft 2in (17.11m)

Bogie wheelbase:

13ft 6in (4.11m)

13ft 6in (4.11m)

Bogie pivot centres:

42ft 8in (13.00m)

42ft 8in (13.00m)

Wheel diameter:

3ft 7in (1.09m)

3ft 7in (1.09m)

Min curve negotiable:

4 chains (80.46m)

4 chains (80.46m)

Engine type:

English Electric 16CSVT

English Electric 16CSVT

Engine output:

2,700hp (2,014kW)

2,450hp (1,750kW)

Power at rail:

2,070hp (1,540kW)

1,890hp (1,370kW)

Tractive effort:

48,500lb (216kN)

Not recorded

Cylinder bore:

10in (0.25m)

10in (0.25m)

Cylinder stroke:

12in (0.30m)

12in (0.30m)

Maximum speed:

100mph (161km/h)

80mph (129km/h)

Brake type:

Dual

Dual

Brake force:

59 tonners

59 tonners

Route availability:

6

6

Heating type:

Electric - index 61

Electric - Isolated

Multiple coupling type:

Orange square

Orange square

Main generator type:

EE840-4B

EE840-4B

Aux generator type:

EE911-5C

EE911-5C

ETS generator type:

EE915-1B

EE915-1B

Traction motor type:

EE538-5A

EE538-5A

No of traction motors:

6

6

Gear ratio:

53:18

59:16

Fuel tank capacity:

1,055gal (4,797lit)

1,055gal (4,797lit)

Cooling water capacity:

280gal (1,272lit)

280gal (1,272lit)

Lub oil capacity:

130gal (591lit)

130gal (591lit)

Sanding equipment:

Originally electro-pneumatic, then isolated

Not fitted

Private sector

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