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British Rail standard class 4 tank
The standard class 4 tank locomotive was developed to replace older tank locomotives for use with fast commuter and suburban trains. It was based on the LMS Fairburn 2-6-4T and had a similar driving wheel diameter of ...
| British Rail standard class 4 tankRemove | |
|---|---|
| Variant | Standard |
| Built | 1951-1956 |
| Manufacturers | Brighton;Derby;Doncaster |
| Wheel arrangement | 1C2 t |
| Gauge | 1435 mm |
| Length | 13665 mm |
| Service mass | 90002 kg |
| Top speed | 121 km/h |
| Power | |
| Engine |
General
| Property | British Rail standard class 4 tank Standard Remove |
|---|---|
| Built | 1951-1956 |
| Manufacturers | Brighton, Derby, Doncaster |
| Wheel arrangement | 2-6-4T (Adriatic) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | British Rail standard class 4 tank Standard Remove |
|---|---|
| Length | 13.67 m |
| Wheelbase | 11.23 m |
| Service mass | 90 t |
| Adhesion mass | 53.9 t |
| Rigid wheelbase | 4.67 m |
| Axle load | 18.2 t |
| Water capacity | 9,093 l |
| Fuel capacity | 3.3 t (coal) |
Boiler
| Property | British Rail standard class 4 tank Standard Remove |
|---|---|
| Grate area | 2.481 m² |
| Firebox surface | 13.285 m² |
| Tube heating surface | 113.621 m² |
| Evaporative heating surface | 126.906 m² |
| Superheater surface | 22.297 m² |
| Total heating surface | 149.2 m² |
Power plant
| Property | British Rail standard class 4 tank Standard Remove |
|---|---|
| Driver diameter | 1,727 mm |
| Boiler pressure | 15.5 bar |
| Expansion type | simple expansion |
| Cylinders | two, 457 x 711 mm |
Power
| Property | British Rail standard class 4 tank Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,081 kW (1,470 PS) |
| Top speed | 121 km/h |
| Starting effort | 113.5 kN |
Calculated values
| Property | British Rail standard class 4 tank Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.65 |
| Optimal speed | 58 km/h |
| Power-to-weight ratio | 12.0 kW/t |
| Heating Surface Equivalent | 237.9 m² |
| Cylinder volume/HSE | 1 : 981.49 |
| Adhesive weight/Total | 1 : 1.67 |
| Tractive force/Heating surface | 1 : 15.89 |
| Grate area/Heating surface | 1 : 60.14 |
| Firebox/Tube surface | 1 : 8.55 |
| Total/Superheater | 1 : 5.69 |
