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Great Central class 9P “Lord Faringdon”
Robinson developed two 4-6-0 locomotives for the GCR during the First World War, which were the class 9P shown here for express service and class 9Q for mixed service. They received the same boiler that had already be...
General
| Property | Great Central class 9P “Lord Faringdon”Remove |
|---|---|
| Built | 1917, 1920 |
| Manufacturers | Gorton |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Great Central class 9P “Lord Faringdon”Remove |
|---|---|
| Length | 19.22 m |
| Wheelbase | 8.79 m |
| Rigid wheelbase | 4.72 m |
| Total wheelbase | 16.09 m |
| Service weight | 79.2 t |
| Adhesive weight | 58.1 t |
| Axle load | 20.3 t |
| Water capacity | 18,185 l |
| Fuel capacity | 6.1 t (coal) |
Boiler
| Property | Great Central class 9P “Lord Faringdon”Remove |
|---|---|
| Grate area | 2.415 m² |
| Firebox surface | 15.143 m² |
| Tube heating surface | 174.751 m² |
| Evaporative heating surface | 189.894 m² |
| Superheater surface | 31.866 m² |
| Total heating surface | 221.8 m² |
Power plant
| Property | Great Central class 9P “Lord Faringdon”Remove |
|---|---|
| Driver diameter | 2,057 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | four, 406 x 660 mm |
Power
| Property | Great Central class 9P “Lord Faringdon”Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,007 kW (1,369 PS) |
| Starting effort | 111.9 kN |
Calculated values
| Property | Great Central class 9P “Lord Faringdon”Remove |
|---|---|
| Factor of adhesion | 1 : 5.09 |
| Optimal speed | 55 km/h |
| Power-to-weight ratio | 12.7 kW/t |
| Heating Surface Equivalent | 329.3 m² |
| Cylinder volume/HSE | 1 : 1,040.44 |
| Adhesive weight/Total | 1 : 1.36 |
| Tractive force/Heating surface | 1 : 10.53 |
| Grate area/Heating surface | 1 : 91.83 |
| Firebox/Tube surface | 1 : 11.54 |
| Total/Superheater | 1 : 5.96 |
