Great Central class 11E “Directors”
London & North Eastern class D10
Great Britain 1913 10 produced
The class 11E was created by Robinson from the reduction of the 4-6-0 class 1 in size. A driving axle was removed and the overall length of the locomotive was shortened. The distance between the driving axles was increased and a deeper firebox was placed between them. What was special was that the inside cylinders had outside admission. The ten locomotives were named after directors of the GCR. All were taken over by the LNER and withdrawn between 1953 and 1955.
Technical data
General
- Built
- 1913
- Manufacturers
- Gorton
- Wheel arrangement
- 4-4-0 (American)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Length
- 17.97 m
- Wheelbase
- 7.70 m
- Total wheelbase
- 12.69 m
- Service mass
- 62.1 t
- Adhesion mass
- 40.4 t
- Total mass
- 111.2 t
- Rigid wheelbase
- 3.05 m
- Axle load
- 20.2 t
- Water capacity
- 18,185 l
- Fuel capacity
- 6.1 t (coal)
Boiler
- Grate area
- 2.415 m²
- Firebox surface
- 14.586 m²
- Tube heating surface
- 139.541 m²
- Evaporative heating surface
- 154.126 m²
- Superheater surface
- 28.243 m²
- Total heating surface
- 182.4 m²
Power plant
- Driver diameter
- 2,057 mm
- Boiler pressure
- 12.4 bar
- Expansion type
- simple expansion
- Cylinders
- two, 508 x 660 mm
Power
- Power source
- steam
- Estimated power
- 951 kW (1,293 PS)
- Starting effort
- 87.4 kN
Calculated values
- Factor of adhesion
- 1 : 4.54
- Optimal speed
- 66 km/h
- Power-to-weight ratio
- 15.3 kW/t
- Heating Surface Equivalent
- 283.5 m²
- Cylinder volume/HSE
- 1 : 944.14
- Adhesive weight/Total
- 1 : 1.54
- Tractive force/Heating surface
- 1 : 10.01
- Grate area/Heating surface
- 1 : 75.52
- Firebox/Tube surface
- 1 : 9.57
- Total/Superheater
- 1 : 5.46
