ES1

Original NER numbers:

1-2

Former LNER numbers:

6480-6481

1948 BR numbers:

26500-26501

Built by:

Brush

Introduced:

1905

Wheel arrangement:

Bo-Bo or 0-4+4-0

Weight (operational):

56 tons

Height - pan down:

12ft 11in

Width:

8ft 9in

Length:

37ft 11in

Maximum speed:

25mph

Wheelbase:

27ft 8in

Bogie wheelbase:

6ft 6in

Bogie Pivot centres:

20ft 6in

Wheel diameter:

3ft

Brake type:

Air

Sanding equipment:

Pneumatic

Heating type:

Non fitted

Coupling restriction:

Not multiple fitted

Horsepower:

640hp

Tractive effort - maximum:

25,0001b

Number of traction motors:

4

Traction motor type:

BTH

Control system:

DC direct

Gear ratio:

3.28:1

Nominal supply voltage:

600V dc overhead and third rail