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Great Western Railway class 7200
These 2-8-2T tank locomotives were created by the addition of a trailing axle to 2-8-0T locomotives, alongside a four-feet extension of the frames to increase the capacity of the coal bunker. They were intended for he...
General
| Property | Great Western Railway class 7200Remove |
|---|---|
| Built | 1934-1939 |
| Manufacturers | Swindon |
| Wheel arrangement | 2-8-2T (Mikado) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Great Western Railway class 7200Remove |
|---|---|
| Length | 13.67 m |
| Wheelbase | 10.74 m |
| Rigid wheelbase | 6.10 m |
| Service weight | 94.1 t |
| Adhesive weight | 73.9 t |
| Axle load | 19 t |
| Water capacity | 10,910 l |
| Fuel capacity | 6.1 t (coal) |
Boiler
| Property | Great Western Railway class 7200Remove |
|---|---|
| Grate area | 1.91 m² |
| Firebox surface | 11.958 m² |
| Tube heating surface | 125.386 m² |
| Evaporative heating surface | 137.344 m² |
| Superheater surface | 17.818 m² |
| Total heating surface | 155.2 m² |
Power plant
| Property | Great Western Railway class 7200Remove |
|---|---|
| Driver diameter | 1,410 mm |
| Boiler pressure | 13.8 bar |
| Cylinders | two, 483 x 762 mm |
Power
| Property | Great Western Railway class 7200Remove |
|---|---|
| Estimated power | 783 kW (1,065 PS) |
Calculated values
| Property | Great Western Railway class 7200Remove |
|---|---|
| Optimal speed | 32 km/h |
| Power-to-weight ratio | 8.3 kW/t |
| Heating Surface Equivalent | 232.8 m² |
| Cylinder volume/HSE | 1 : 1,197.63 |
| Adhesive weight/Total | 1 : 1.27 |
| Grate area/Heating surface | 1 : 81.24 |
| Firebox/Tube surface | 1 : 10.49 |
| Total/Superheater | 1 : 7.71 |
