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Great Southern & Western class 400
After Edward A. Watson got to know the Star class at the GWR, he designed the class 400 for the Great Southern & Western based on it. Similarities included, above all, the 4-6-0 wheel arrangement and the four cylinder...
General
| Property | Great Southern & Western class 400Remove |
|---|---|
| Built | 1916, 1921-1923 |
| Manufacturers | Inchicore, Armstrong Whitworth |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,600 mm (Irish broad gauge) |
Dimensions and weights
| Property | Great Southern & Western class 400Remove |
|---|---|
| Wheelbase | 8.26 m |
| Rigid wheelbase | 4.65 m |
| Total wheelbase | 15.04 m |
| Service weight | 71.8 t |
| Adhesive weight | 51.5 t |
| Axle load | 17.6 t |
| Total weight | 108.7 t |
| Water capacity | 15,206 l |
| Fuel capacity | 7.1 t (coal) |
Boiler
| Property | Great Southern & Western class 400Remove |
|---|---|
| Grate area | 2.601 m² |
| Firebox surface | 14.679 m² |
| Tube heating surface | 149.946 m² |
| Evaporative heating surface | 164.624 m² |
| Superheater surface | 40.877 m² |
| Total heating surface | 205.5 m² |
Power plant
| Property | Great Southern & Western class 400Remove |
|---|---|
| Driver diameter | 2,007 mm |
| Boiler pressure | 12.1 bar |
| Expansion type | simple expansion |
| Cylinders | four, 356 x 660 mm |
Power
| Property | Great Southern & Western class 400Remove |
|---|---|
| Power source | steam |
| Estimated power | 895 kW (1,217 PS) |
| Starting effort | 85.4 kN |
Calculated values
| Property | Great Southern & Western class 400Remove |
|---|---|
| Factor of adhesion | 1 : 5.92 |
| Optimal speed | 64 km/h |
| Power-to-weight ratio | 12.5 kW/t |
| Heating Surface Equivalent | 319.8 m² |
| Cylinder volume/HSE | 1 : 820.42 |
| Adhesive weight/Total | 1 : 1.39 |
| Tractive force/Heating surface | 1 : 8.68 |
| Grate area/Heating surface | 1 : 79.01 |
| Firebox/Tube surface | 1 : 10.22 |
| Total/Superheater | 1 : 4.03 |
