CLASS 15

1957 BR number range:

D8200-D8243

Former class codes:

D8/1, later 8/5

Built by:

Yorkshire Eng Co & BTH Ltd

Introduced:

1957-61

Wheel arrangement:

Bo-Bo

Weight (operational):

68 tonnes

Height:

12ft 6in

Width:

9ft 2in

Length:

42ft

Min curve negotiable:

3 1/2 chains

Maximum speed:

60mph

Wheelbase:

31 ft

Bogie wheelbase:

8ft 6in

Bogie pivot centres:

22ft 6in

Wheel diameter:

3ft 3in

Brake type:

Vacuum

Sanding equipment:

Pneumatic

Route availability:

4

Heating type:

Not fitted (Through steam pipe)

Multiple coupling restriction:

Blue Star

Brake force:

31tonnes

Engine type:

Paxman 16YHXL

Engine horsepower:

800hp

Power at rail:

627hp

Tractive effort:

37,5001b

Cylinder bore:

7in

Cylinder stroke:

7 3/4in

Main generator type:

BTH RTB10858

Aux generator type:

BTH RTB7420

Number of traction motors:

4

Traction motor type:

BTH 137AZ

Gear ratio:

Fuel tank capacity:

40Ogal

Cooling water capacity:

?? gal

Lub oil capacity :

?? gal

Boiler water capacity:

?? gal