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Great Western Railway class 3031 “Achilles” / “Dean Single”
The class 3031 of the Great Western Railway, also known as the “Dean Single”, was created by rebuilding of 30 members of the class 3001, which had been built by William Dean in the 7 feet 1/4 inch broad gauge and were...
| Great Western Railway class 3031 “Achilles” / “Dean Single”Remove | |
|---|---|
| Variant | Standard |
| Built | 1894-1899 |
| Manufacturers | Swindon |
| Wheel arrangement | 2A1 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 49786 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Great Western Railway class 3031 “Achilles” / “Dean Single” Standard Remove |
|---|---|
| Built | 1894-1899 |
| Manufacturers | Swindon |
| Wheel arrangement | 4-2-2 (Single) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Western Railway class 3031 “Achilles” / “Dean Single” Standard Remove |
|---|---|
| Wheelbase | 7.16 m |
| Service mass | 49.8 t |
| Adhesion mass | 18.3 t |
| Total mass | 82.8 t |
| Rigid wheelbase | 2.74 m |
| Axle load | 18.3 t |
| Water capacity | 16,364 l |
Boiler
| Property | Great Western Railway class 3031 “Achilles” / “Dean Single” Standard Remove |
|---|---|
| Grate area | 1.932 m² |
| Firebox surface | 11.799 m² |
| Tube heating surface | 133.223 m² |
| Evaporative heating surface | 145.022 m² |
| Total heating surface | 145.0 m² |
Power plant
| Property | Great Western Railway class 3031 “Achilles” / “Dean Single” Standard Remove |
|---|---|
| Driver diameter | 2,350 mm |
| Boiler pressure | 11 bar |
| Expansion type | simple expansion |
| Cylinders | two, 483 x 610 mm |
Power
| Property | Great Western Railway class 3031 “Achilles” / “Dean Single” Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 541 kW (736 PS) |
| Starting effort | 56.7 kN |
Calculated values
| Property | Great Western Railway class 3031 “Achilles” / “Dean Single” Standard Remove |
|---|---|
| Factor of adhesion | 1 : 3.17 |
| Optimal speed | 58 km/h |
| Power-to-weight ratio | 10.9 kW/t |
| Heating Surface Equivalent | 204.0 m² |
| Cylinder volume/HSE | 1 : 1,093.13 |
| Adhesive weight/Total | 1 : 2.72 |
| Tractive force/Heating surface | 1 : 8.16 |
| Grate area/Heating surface | 1 : 75.06 |
| Firebox/Tube surface | 1 : 11.29 |
