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Drummond designed the class T9 after it was found out that the firebox of the class C8 express locomotive was too small. He did not only increase the grate area from 20 to 24 square feet , but he also included cross-w...
| Remove | |
|---|---|
| Variant | superheated |
| Built | 1922-1929 |
| Manufacturers | Nine Elms |
| Wheel arrangement | 2B |
| Gauge | 1435 mm |
| Length | 17501 mm |
| Service mass | 52174 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | superheated |
|---|---|
| Built | 1922-1929 |
| Manufacturers | Nine Elms |
| Wheel arrangement | 4-4-0 (American) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | superheated |
|---|---|
| Length | 17.50 m |
| Wheelbase | 7.09 m |
| Service mass | 52.2 t |
| Adhesion mass | 34.9 t |
| Total mass | 97.7 t |
| Rigid wheelbase | 3.05 m |
| Axle load | 17.9 t |
| Water capacity | 18,185 l |
| Fuel capacity | 5.1 t (coal) |
Boiler
| Property | superheated |
|---|---|
| Grate area | 2.23 m² |
| Firebox surface | 13.192 m² |
| Tube heating surface | 85.564 m² |
| Evaporative heating surface | 98.756 m² |
| Superheater surface | 18.116 m² |
| Total heating surface | 116.9 m² |
Power plant
| Property | superheated |
|---|---|
| Driver diameter | 2,007 mm |
| Boiler pressure | 13.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 483 x 660 mm |
Power
| Property | superheated |
|---|---|
| Power source | steam |
| Estimated power | 820 kW (1,115 PS) |
| Starting effort | 87.6 kN |
Calculated values
| Property | superheated |
|---|---|
| Factor of adhesion | 1 : 3.90 |
| Optimal speed | 58 km/h |
| Power-to-weight ratio | 15.7 kW/t |
| Heating Surface Equivalent | 200.9 m² |
| Cylinder volume/HSE | 1 : 1,202.31 |
| Adhesive weight/Total | 1 : 1.50 |
| Tractive force/Heating surface | 1 : 15.65 |
| Grate area/Heating surface | 1 : 52.41 |
| Firebox/Tube surface | 1 : 6.49 |
| Total/Superheater | 1 : 5.45 |
