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Southern Railway (UK) West Country and Battle of Britain classes
After Bulleid had introduced his innovative Pacific of the Merchant Navy class, the Southern Railway identified the need for a lighter locomotive that was also suited for express and fast freight trains. On the one ha...
| Southern Railway (UK) West Country and Battle of Britain classesRemove | |
|---|---|
| Variant | |
| Built | 1945-1951 |
| Manufacturers | Brighton;Eastleigh |
| Wheel arrangement | 2C1 |
| Gauge | 1435 mm |
| Length | 20542 mm |
| Service mass | 87376 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Southern Railway (UK) West Country and Battle of Britain classesRemove |
|---|---|
| Built | 1945-1951 |
| Manufacturers | Brighton, Eastleigh |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Southern Railway (UK) West Country and Battle of Britain classesRemove |
|---|---|
| Length | 20.54 m |
| Wheelbase | 10.85 m |
| Total wheelbase | 17.53 m |
| Empty mass | 78 t |
| Service mass | 87.4 t |
| Adhesion mass | 51 t |
| Total mass | 121.3 t |
| Rigid wheelbase | 4.50 m |
| Axle load | 19.1 t |
| Water capacity | 20,456 l |
| Fuel capacity | 5.1 t (coal) |
Boiler
| Property | Southern Railway (UK) West Country and Battle of Britain classesRemove |
|---|---|
| Grate area | 3.554 m² |
| Firebox surface | 23.504 m² |
| Tube heating surface | 173.636 m² |
| Evaporative heating surface | 197.14 m² |
| Superheater surface | 50.632 m² |
| Total heating surface | 247.8 m² |
Power plant
| Property | Southern Railway (UK) West Country and Battle of Britain classesRemove |
|---|---|
| Driver diameter | 1,880 mm |
| Boiler pressure | 19.3 bar |
| Expansion type | simple expansion |
| Cylinders | three, 416 x 610 mm |
Power
| Property | Southern Railway (UK) West Country and Battle of Britain classesRemove |
|---|---|
| Power source | steam |
| Estimated power | 1,939 kW (2,636 PS) |
| Starting effort | 138.1 kN |
Calculated values
| Property | Southern Railway (UK) West Country and Battle of Britain classesRemove |
|---|---|
| Factor of adhesion | 1 : 3.62 |
| Optimal speed | 85 km/h |
| Power-to-weight ratio | 22.2 kW/t |
| Heating Surface Equivalent | 415.9 m² |
| Cylinder volume/HSE | 1 : 597.41 |
| Adhesive weight/Total | 1 : 1.71 |
| Tractive force/Heating surface | 1 : 11.64 |
| Grate area/Heating surface | 1 : 69.72 |
| Firebox/Tube surface | 1 : 7.39 |
| Total/Superheater | 1 : 3.89 |
