British Rail Standard class 3
Great Britain 1954 20 produced
The BR Standard class 3 tender locomotive was a 2-6-0 mixed traffic design that differed somewhat from the other standard designs. They were built at Swindon, and so it's not surprising that their boiler was based on the GWR No. 2 standard boiler used on the Large Prairie and class 5600. But they still had many influences from LMS locomotives, like the chassis and other parts based on the LMS Ivatt class 4. Due to the presence of the Standard classes 2 and 4, only 20 of the class 3 were built. The first one was withdrawn in 1965 and all others followed in 1966 and 1967.
Technical data
General
- Built
- 1954
- Manufacturers
- Swindon
- Wheel arrangement
- 2-6-0 (Mogul)
- Gauge
- 1,435 mm (Standard gauge)
Dimensions and weights
- Length
- 17.05 m
- Wheelbase
- 7.34 m
- Service mass
- 58 t
- Adhesion mass
- 49.3 t
- Rigid wheelbase
- 4.67 m
- Axle load
- 16.5 t
- Water capacity
- 19,094 l
- Fuel capacity
- 6.1 t (coal)
Boiler
- Grate area
- 2.137 m²
- Firebox surface
- 10.963 m²
- Tube heating surface
- 75.53 m²
- Evaporative heating surface
- 86.493 m²
- Superheater surface
- 17.28 m²
- Total heating surface
- 103.8 m²
Power plant
- Driver diameter
- 1,600 mm
- Boiler pressure
- 13.8 bar
- Expansion type
- simple expansion
- Cylinders
- two, 444 x 660 mm
Power
- Power source
- steam
- Estimated power
- 708 kW (963 PS)
- Starting effort
- 95.6 kN
Calculated values
- Factor of adhesion
- 1 : 5.06
- Optimal speed
- 45 km/h
- Power-to-weight ratio
- 12.2 kW/t
- Heating Surface Equivalent
- 175.9 m²
- Cylinder volume/HSE
- 1 : 1,165.42
- Adhesive weight/Total
- 1 : 1.18
- Tractive force/Heating surface
- 1 : 19.24
- Grate area/Heating surface
- 1 : 48.56
- Firebox/Tube surface
- 1 : 6.89
- Total/Superheater
- 1 : 5.01