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London & North Western class B “Swami”
Based on his class A three-cylinder compound, Francis Webb designed the four-cylinder compound class B for the LNWR. Between 1901 and 1904, a total of 170 were built. They earned the nickname “Swami” after magicians w...
| London & North Western class B “Swami”Remove | |
|---|---|
| Variant | Standard |
| Built | 1901-1904 |
| Manufacturers | Crewe |
| Wheel arrangement | D |
| Gauge | 1435 mm |
| Length | |
| Service mass | 54359 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | London & North Western class B “Swami” Standard Remove |
|---|---|
| Built | 1901-1904 |
| Manufacturers | Crewe |
| Wheel arrangement | 0-8-0 (Eight-coupled) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | London & North Western class B “Swami” Standard Remove |
|---|---|
| Wheelbase | 5.26 m |
| Service mass | 54.4 t |
| Adhesion mass | 54.4 t |
| Rigid wheelbase | 5.26 m |
| Axle load | 17.5 t |
| Water capacity | 11,364 l |
Boiler
| Property | London & North Western class B “Swami” Standard Remove |
|---|---|
| Grate area | 1.932 m² |
| Firebox surface | 11.427 m² |
| Tube heating surface | 151.432 m² |
| Evaporative heating surface | 162.859 m² |
| Total heating surface | 162.9 m² |
Power plant
| Property | London & North Western class B “Swami” Standard Remove |
|---|---|
| Driver diameter | 1,359 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | compound |
| Cylinders | four, HP: 406 x 610 mm and LP: 521 x 610 mm |
Power
| Property | London & North Western class B “Swami” Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 671 kW (912 PS) |
| Starting effort | 107.9 kN |
| Starting effort simple | 129.5 kN |
Calculated values
| Property | London & North Western class B “Swami” Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.94 |
| Optimal speed | 39 km/h |
| Power-to-weight ratio | 12.3 kW/t |
| Heating Surface Equivalent | 220.0 m² |
| Cylinder volume/HSE | 1 : 1,308.95 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 13.84 |
| Grate area/Heating surface | 1 : 84.30 |
| Firebox/Tube surface | 1 : 13.25 |
