Lancashire & Yorkshire class 26
Great Britain 1903 20 produced
For heavy passenger trains on lines with many stops and gradients of more than two percent, Hoy designed a heavy tank locomotive. With three driving axles and a wheel diameter of 5 feet 8 inches, good acceleration and high speed should be achieved at the same time. They had a scoop device to fill up the water tanks on the run. The wheel flanges on the second driving axle had to be removed later due to wear and tear on the rails. Since this brought new problems, they were put into shunting service as early as 1913. Because they were not suitable for this either, they were retired between 1920 and 1926.
Technical data
General
- Built
- 1903-1904
- Manufacturers
- Horwich
- Wheel arrangement
- 2-6-2T (Prairie)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Length
- 12.90 m
- Wheelbase
- 8.41 m
- Service mass
- 78.8 t
- Adhesion mass
- 53.2 t
- Rigid wheelbase
- 3.76 m
- Axle load
- 18.3 t
- Water capacity
- 9,093 l
- Fuel capacity
- 3.8 t (coal)
Boiler
- Grate area
- 2.42 m²
- Firebox surface
- 15.017 m²
- Tube heating surface
- 174.379 m²
- Evaporative heating surface
- 189.396 m²
- Total heating surface
- 189.4 m²
Power plant
- Driver diameter
- 1,727 mm
- Boiler pressure
- 12.1 bar
- Expansion type
- simple expansion
- Cylinders
- two, 483 x 660 mm
Power
- Power source
- steam
- Estimated power
- 671 kW (912 PS)
- Starting effort
- 91.3 kN
Calculated values
- Factor of adhesion
- 1 : 5.71
- Optimal speed
- 45 km/h
- Power-to-weight ratio
- 8.5 kW/t
- Heating Surface Equivalent
- 264.5 m²
- Cylinder volume/HSE
- 1 : 913.50
- Adhesive weight/Total
- 1 : 1.48
- Tractive force/Heating surface
- 1 : 10.07
- Grate area/Heating surface
- 1 : 78.26
- Firebox/Tube surface
- 1 : 11.61
