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London & North Western Dreadnought class
The Dreadnought class was the larger successor of the 2-2-2-0 Experiment class. Both were three-cylinder Webb compounds with divided drive. As such, both classes had two small outside high pressure cylinders, driving ...
General
| Property | London & North Western Dreadnought classRemove |
|---|---|
| Built | 1884-1888 |
| Manufacturers | Crewe |
| Wheel arrangement | 2-2-2-0 (Webb Compound) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | London & North Western Dreadnought classRemove |
|---|---|
| Wheelbase | 5.51 m |
| Rigid wheelbase | 2.95 m |
| Service weight | 43.2 t |
| Adhesive weight | 29.5 t |
| Axle load | 15.2 t |
| Total weight | 68.6 t |
| Water capacity | 8,184 l |
| Fuel capacity | 5.1 t (coal) |
Boiler
| Property | London & North Western Dreadnought classRemove |
|---|---|
| Grate area | 1.905 m² |
| Firebox surface | 14.781 m² |
| Tube heating surface | 115.376 m² |
| Evaporative heating surface | 130.157 m² |
| Total heating surface | 130.2 m² |
Power plant
| Property | London & North Western Dreadnought classRemove |
|---|---|
| Driver diameter | 1,905 mm |
| Boiler pressure | 12.1 bar |
| Expansion type | compound |
| Cylinders | three, HP: 356 x 610 mm and LP: 762 x 610 mm |
Power
| Property | London & North Western Dreadnought classRemove |
|---|---|
| Power source | steam |
| Estimated power | 597 kW (812 PS) |
| Starting effort | 51.1 kN |
| Starting effort simple | 61.3 kN |
Calculated values
| Property | London & North Western Dreadnought classRemove |
|---|---|
| Factor of adhesion | 1 : 4.71 |
| Optimal speed | 71 km/h |
| Power-to-weight ratio | 13.8 kW/t |
| Heating Surface Equivalent | 204.1 m² |
| Cylinder volume/HSE | 1 : 1,466.78 |
| Adhesive weight/Total | 1 : 1.47 |
| Tractive force/Heating surface | 1 : 9.84 |
| Grate area/Heating surface | 1 : 68.32 |
| Firebox/Tube surface | 1 : 7.81 |
