British Rail Class ES1

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North Eastern Railways Class ES1
NorthEasternRailwayNo1-Locomotion-Shildon-April2008.JPG
NER No.1, Locomotion museum, Shildon
Type and origin
Power typeElectric
BuilderBritish Thomson-Houston, with mechanical parts sub-contracted to Brush, for North Eastern Railway
Build date1903-1904 (contract signed with builders on 15 December 1902)
Total produced2
Specifications
Configuration:
 • WhyteBo+Bo
Gauge4 ft 8 12 in (1,435 mm) standard gauge
Wheel diameter3 ft 0 in (0.914 m)
Wheelbase27 ft 0 in (8.230 m)
Length37 ft 11 in (11.557 m)
Heightwith pantograph lowered 12 ft 11 in (3.937 m); raised 15 ft 9 in (4.801 m)
Loco weight56 tons (51 tonnes)
Electric system/s600–630 V DC
Current pickup(s)Third rail or pantograph
Traction motorsBritish Thomson-Houston, 4 off
Train heatingNone
Performance figures
Top speed27 mph (43 km/h)
Power output640 hp (477 kW)
Tractive effort25,000 lbf (111.2 kN)
Career
Railroad(s)North Eastern Railway
London and North Eastern Railway
British Railways
NumberNER: 1–2
LNER 1–2, later 6480–6481
BR: 26500–26501
Axle load classRoute availability 2
First run1905
Retired1964
DispositionNo.1 preserved, No.2 scrapped in 1966

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