CLASS 17

1957 BR number range:

D8500-D8616

Former class codes:

D8500-D8587 - 9/18
D8588-D8616 - 9/19

Built by:

Clayton & Beyer Peacock

Introduced:

1962-1965

Wheel arrangement:

Bo-Bo

Weight (operational):

68 tonnes

Height:

12ft 8in

Width:

8ft 9 1/2in

Length:

50ft 7in

Min curve negotiable:

3 1/2 chains

Maximum speed:

60mph

Wheelbase:

36ft 6in

Bogie wheelbase:

8ft 6in

Bogie pivot centres:

28ft

Wheel diameter:

3ft 3 1/2in

Brake type:

Vacuum

Sanding equipment:

Pneumatic

Route availability:

4

Heating type:

Not fitted (Through steam pipe)

Multiple coupling restriction:

D8500-D8587 - Red Diamond
D8588-D8616 - Blue Star

Brake force:

35 tonnes

Engine type:

D8500-D8585, D8588-D8616 - 2 x Paxman 6ZHXL
D8586-D8587) - 2 x Rolls Royce D

Engine horsepower (total):

900hp

Power at rail:

602hp

Tractive effort:

40,0001b

Cylinder bore:

7in

Cylinder stroke:

7 3/4in

Main generator type:

D8500-D8587 - GEC WT800
D8588-D8616 - Crompton Parkinson

Aux generator type:

D8500-D8587 - GEC WT
D8588-D8616 - Crompton Parkinson

Number of traction motors:

4

Traction motor type:

GEC WT421

Gear ratio:

Fuel tank capacity:

50Ogal

Cooling water capacity:

?? gal

Lub oil capacity:

?? gal

Boiler water capacity:

Not fitted