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London & South Western class S15
To get a new powerful goods locomotive in the context of his standardization efforts for the LSWR, Robert Urie designed the class S15 on the basis of the H15 an N15. It used many parts already used in at least one of ...
| London & South Western class S15Remove | |
|---|---|
| Variant | |
| Built | 1920-1921 |
| Manufacturers | Eastleigh |
| Wheel arrangement | 2C |
| Gauge | 1435 mm |
| Length | 19980 mm |
| Service mass | 78185 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | London & South Western class S15Remove |
|---|---|
| Built | 1920-1921 |
| Manufacturers | Eastleigh |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | London & South Western class S15Remove |
|---|---|
| Length | 19.98 m |
| Wheelbase | 8.10 m |
| Service mass | 78.2 t |
| Adhesion mass | 56.8 t |
| Total mass | 136.8 t |
| Rigid wheelbase | 4.19 m |
| Axle load | 19 t |
| Water capacity | 22,731 l |
| Fuel capacity | 5.1 t (coal) |
Boiler
| Property | London & South Western class S15Remove |
|---|---|
| Grate area | 2.787 m² |
| Firebox surface | 15.05 m² |
| Tube heating surface | 159.422 m² |
| Evaporative heating surface | 174.472 m² |
| Superheater surface | 28.614 m² |
| Total heating surface | 203.1 m² |
Power plant
| Property | London & South Western class S15Remove |
|---|---|
| Driver diameter | 1,702 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 533 x 711 mm |
Power
| Property | London & South Western class S15Remove |
|---|---|
| Power source | steam |
| Estimated power | 1,044 kW (1,419 PS) |
| Starting effort | 125.4 kN |
Calculated values
| Property | London & South Western class S15Remove |
|---|---|
| Factor of adhesion | 1 : 4.44 |
| Optimal speed | 51 km/h |
| Power-to-weight ratio | 13.4 kW/t |
| Heating Surface Equivalent | 307.0 m² |
| Cylinder volume/HSE | 1 : 1,035.50 |
| Adhesive weight/Total | 1 : 1.38 |
| Tractive force/Heating surface | 1 : 12.90 |
| Grate area/Heating surface | 1 : 72.87 |
| Firebox/Tube surface | 1 : 10.59 |
| Total/Superheater | 1 : 6.10 |
