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British Rail Standard class 4 (2-6-0)
Of the three 2-6-0 BR Standard locomotives, the biggest was the class 4. It was developed by Robert Riddles at Doncaster and based on the LMS Ivatt class 4. Although classified as mixed traffic locomotives, they were ...
General
| Property | British Rail Standard class 4 (2-6-0)Remove |
|---|---|
| Built | 1952-1957 |
| Manufacturers | Horwich, Doncaster |
| Wheel arrangement | 2-6-0 (Mogul) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | British Rail Standard class 4 (2-6-0)Remove |
|---|---|
| Length | 18.29 m |
| Wheelbase | 7.34 m |
| Rigid wheelbase | 4.67 m |
| Total wheelbase | 14.00 m |
| Service weight | 60 t |
| Adhesive weight | 51.3 t |
| Axle load | 17 t |
| Total weight | 102.7 t |
| Water capacity | 15,910 l |
| Fuel capacity | 6.1 t (coal) |
Boiler
| Property | British Rail Standard class 4 (2-6-0)Remove |
|---|---|
| Grate area | 2.137 m² |
| Firebox surface | 12.17 m² |
| Tube heating surface | 89.094 m² |
| Evaporative heating surface | 101.264 m² |
| Superheater surface | 21.461 m² |
| Total heating surface | 122.7 m² |
Power plant
| Property | British Rail Standard class 4 (2-6-0)Remove |
|---|---|
| Driver diameter | 1,600 mm |
| Boiler pressure | 15.5 bar |
| Expansion type | simple expansion |
| Cylinders | two, 444 x 660 mm |
Power
| Property | British Rail Standard class 4 (2-6-0)Remove |
|---|---|
| Power source | steam |
| Estimated power | 820 kW (1,115 PS) |
| Starting effort | 107.5 kN |
Calculated values
| Property | British Rail Standard class 4 (2-6-0)Remove |
|---|---|
| Factor of adhesion | 1 : 4.68 |
| Optimal speed | 47 km/h |
| Power-to-weight ratio | 13.7 kW/t |
| Heating Surface Equivalent | 205.0 m² |
| Cylinder volume/HSE | 1 : 999.63 |
| Adhesive weight/Total | 1 : 1.17 |
| Tractive force/Heating surface | 1 : 18.30 |
| Grate area/Heating surface | 1 : 57.43 |
| Firebox/Tube surface | 1 : 7.32 |
| Total/Superheater | 1 : 4.72 |
