British Rail Class ES1

Specifications
Specifications
Configuration:;
• Whyte	Bo+Bo
Gauge	4 ft 8 1⁄2 in (1,435 mm) standard gauge
Wheel diameter	3 ft 0 in (0.914 m)
Wheelbase	27 ft 0 in (8.230 m)
Length	37 ft 11 in (11.557 m)
Height	with pantograph lowered 12 ft 11 in (3.937 m); raised 15 ft 9 in (4.801 m)
Loco weight	56 tons (51 tonnes)
Electric system/s	600–630 V DC
Current pickup(s)	Third rail or pantograph
Traction motors	British Thomson-Houston, 4 off
Train heating	None

Type and origin
Type and origin
Power type	Electric
Builder	British Thomson-Houston, with help from Brush
Build date	1903-1904 (contract signed with builders on 15 December 1902)
Total produced	2

North Eastern Railway Class ES1
North Eastern Railway Class ES1
	NER No.1, Locomotion museum, Shildon
Power type
Type and origin
Power type	Electric
Builder	British Thomson-Houston, with help from Brush
Build date	1903-1904 (contract signed with builders on 15 December 1902)
Total produced	2
Configuration:;
Specifications
Configuration:;
• Whyte	Bo+Bo
Gauge	4 ft 8 1⁄2 in (1,435 mm) standard gauge
Wheel diameter	3 ft 0 in (0.914 m)
Wheelbase	27 ft 0 in (8.230 m)
Length	37 ft 11 in (11.557 m)
Height	with pantograph lowered 12 ft 11 in (3.937 m); raised 15 ft 9 in (4.801 m)
Loco weight	56 tons (51 tonnes)
Electric system/s	600–630 V DC
Current pickup(s)	Third rail or pantograph
Traction motors	British Thomson-Houston, 4 off
Train heating	None
Maximum speed
Performance figures
Maximum speed	27 mph (43 km/h)
Power output	640 hp (477 kW)
Tractive effort	25,000 lbf (111.2 kN)
Operators
Career
Operators	North Eastern Railway; London and North Eastern Railway; British Railways
Numbers	NER: 1–2; LNER 1–2, later 6480–6481; BR: 26500–26501
Axle load class	Route availability 2
First run	1905
Retired	1964
Disposition	No.1 preserved, No.2 scrapped in 1966

The British Rail Class ES1 was a class of two electric locomotives commissioned by the North Eastern Railway in 1902. They were of steeplecab design.