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Great Western Railway class 4200
When the 0-6-2T tank locomotives became too weak on the winding coal lines in South Wales, Churchward constructed a successor. Initially, he planned to develop a tank locomotive from his class 2800 2-8-0 by adding a t...
| Great Western Railway class 4200Remove | |
|---|---|
| Variant | Standard |
| Built | 1910-1923 |
| Manufacturers | Swindon |
| Wheel arrangement | 1D t |
| Gauge | 1435 mm |
| Length | |
| Service mass | 82910 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Great Western Railway class 4200 Standard Remove |
|---|---|
| Built | 1910-1923 |
| Manufacturers | Swindon |
| Wheel arrangement | 2-8-0T (Consolidation) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Western Railway class 4200 Standard Remove |
|---|---|
| Wheelbase | 8.76 m |
| Service mass | 82.9 t |
| Adhesion mass | 73.7 t |
| Rigid wheelbase | 6.10 m |
| Axle load | 19 t |
| Water capacity | 8,184 l |
| Fuel capacity | 4.1 t (coal) |
Boiler
| Property | Great Western Railway class 4200 Standard Remove |
|---|---|
| Grate area | 1.91 m² |
| Firebox surface | 11.958 m² |
| Tube heating surface | 113.554 m² |
| Evaporative heating surface | 125.512 m² |
| Total heating surface | 125.5 m² |
Power plant
| Property | Great Western Railway class 4200 Standard Remove |
|---|---|
| Driver diameter | 1,410 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | two, 470 x 762 mm |
Power
| Property | Great Western Railway class 4200 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 671 kW (912 PS) |
| Starting effort | 139.9 kN |
Calculated values
| Property | Great Western Railway class 4200 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 5.17 |
| Optimal speed | 29 km/h |
| Power-to-weight ratio | 8.1 kW/t |
| Heating Surface Equivalent | 185.3 m² |
| Cylinder volume/HSE | 1 : 1,426.28 |
| Adhesive weight/Total | 1 : 1.13 |
| Tractive force/Heating surface | 1 : 23.28 |
| Grate area/Heating surface | 1 : 65.71 |
| Firebox/Tube surface | 1 : 9.50 |
