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Great Central class 9N
Robinson developed these heavy tank locomotives for fast suburban traffic. With a driving wheel diameter of 5 feet and 7 inches or 1,702 mm and three coupled axles , they were also able to achieve good acceleration. O...
| Great Central class 9NRemove | |
|---|---|
| Variant | |
| Built | 1923-1926 |
| Manufacturers | Hawthorn, Leslie & Co. |
| Wheel arrangement | 2C1 t |
| Gauge | 1435 mm |
| Length | 13103 mm |
| Service mass | 87380 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Great Central class 9NRemove |
|---|---|
| Built | 1923-1926 |
| Manufacturers | Hawthorn, Leslie & Co. |
| Wheel arrangement | 4-6-2T (Pacific) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Central class 9NRemove |
|---|---|
| Length | 13.10 m |
| Wheelbase | 9.98 m |
| Service mass | 87.4 t |
| Adhesion mass | 54.9 t |
| Rigid wheelbase | 3.96 m |
| Axle load | 19 t |
| Water capacity | 10,364 l |
| Fuel capacity | 4.2 t (coal) |
Boiler
| Property | Great Central class 9NRemove |
|---|---|
| Grate area | 1.951 m² |
| Firebox surface | 13.127 m² |
| Tube heating surface | 105.789 m² |
| Evaporative heating surface | 118.916 m² |
| Superheater surface | 16.537 m² |
| Total heating surface | 135.5 m² |
Power plant
| Property | Great Central class 9NRemove |
|---|---|
| Driver diameter | 1,702 mm |
| Boiler pressure | 11 bar |
| Expansion type | simple expansion |
| Cylinders | two, 508 x 660 mm |
Power
| Property | Great Central class 9NRemove |
|---|---|
| Power source | steam |
| Estimated power | 690 kW (938 PS) |
| Starting effort | 93.9 kN |
Calculated values
| Property | Great Central class 9NRemove |
|---|---|
| Factor of adhesion | 1 : 5.73 |
| Optimal speed | 45 km/h |
| Power-to-weight ratio | 7.9 kW/t |
| Heating Surface Equivalent | 217.6 m² |
| Cylinder volume/HSE | 1 : 1,230.11 |
| Adhesive weight/Total | 1 : 1.59 |
| Tractive force/Heating surface | 1 : 14.48 |
| Grate area/Heating surface | 1 : 69.43 |
| Firebox/Tube surface | 1 : 8.06 |
| Total/Superheater | 1 : 7.19 |
