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London & North Western Greater Britain class
The Greater Britain class of the London & North Western Railway consisted of ten 2-2-2-2 Webb compounds built in Crewe between 1892 and 1894. Like Francis William Webb's other 2-2-2-0 compounds, the two driving axles ...
| London & North Western Greater Britain classRemove | |
|---|---|
| Variant | Standard |
| Built | 1891-1894 |
| Manufacturers | Crewe |
| Wheel arrangement | 1AA1 t |
| Gauge | 1435 mm |
| Length | 16459 mm |
| Service mass | 52835 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | London & North Western Greater Britain class Standard Remove |
|---|---|
| Built | 1891-1894 |
| Manufacturers | Crewe |
| Wheel arrangement | 2-2-2-2T (Webb Compound) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | London & North Western Greater Britain class Standard Remove |
|---|---|
| Length | 16.46 m |
| Wheelbase | 7.29 m |
| Total wheelbase | 13.39 m |
| Service mass | 52.8 t |
| Adhesion mass | 31.5 t |
| Total mass | 78.2 t |
| Rigid wheelbase | 2.52 m |
| Axle load | 15.7 t |
| Water capacity | 9,093 l |
| Fuel capacity | 4.1 t (coal) |
Boiler
| Property | London & North Western Greater Britain class Standard Remove |
|---|---|
| Grate area | 1.905 m² |
| Firebox surface | 14.837 m² |
| Tube heating surface | 125.048 m² |
| Evaporative heating surface | 139.884 m² |
| Total heating surface | 139.9 m² |
Power plant
| Property | London & North Western Greater Britain class Standard Remove |
|---|---|
| Driver diameter | 2,159 mm |
| Boiler pressure | 11.9 bar |
| Expansion type | compound |
| Cylinders | three, HP: 381 x 610 mm and LP: 762 x 610 mm |
Power
| Property | London & North Western Greater Britain class Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 597 kW (812 PS) |
| Starting effort | 49.9 kN |
| Starting effort simple | 59.8 kN |
Calculated values
| Property | London & North Western Greater Britain class Standard Remove |
|---|---|
| Factor of adhesion | 1 : 6.20 |
| Optimal speed | 72 km/h |
| Power-to-weight ratio | 11.3 kW/t |
| Heating Surface Equivalent | 214.1 m² |
| Cylinder volume/HSE | 1 : 1,460.97 |
| Adhesive weight/Total | 1 : 1.68 |
| Tractive force/Heating surface | 1 : 7.45 |
| Grate area/Heating surface | 1 : 73.43 |
| Firebox/Tube surface | 1 : 8.43 |
