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London & North Western Problem or Lady of the Lake class
The second design by John Ramsbottom while he was in charge for the LNWR was a 2-2-2 express locomotive with a wheel diameter of seven feet six inches. This could be described as a simplified and therefore cheaper var...
| London & North Western Problem or Lady of the Lake classRemove | |
|---|---|
| Variant | rebuilt 1895 |
| Built | 1895-1897 |
| Manufacturers | Crewe |
| Wheel arrangement | 1A1 |
| Gauge | 1435 mm |
| Length | |
| Service mass | 31853 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | London & North Western Problem or Lady of the Lake classrebuilt 1895 |
|---|---|
| Built | 1895-1897 |
| Manufacturers | Crewe |
| Wheel arrangement | 2-2-2 (Jenny Lind) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | London & North Western Problem or Lady of the Lake classrebuilt 1895 |
|---|---|
| Wheelbase | 4.67 m |
| Service mass | 31.9 t |
| Adhesion mass | 14.5 t |
| Total mass | 57.3 t |
| Rigid wheelbase | 4.67 m |
| Axle load | 14.5 t |
| Water capacity | 8,184 l |
Boiler
| Property | London & North Western Problem or Lady of the Lake classrebuilt 1895 |
|---|---|
| Grate area | 1.589 m² |
| Firebox surface | 8.789 m² |
| Tube heating surface | 91.082 m² |
| Evaporative heating surface | 99.871 m² |
| Total heating surface | 99.9 m² |
Power plant
| Property | London & North Western Problem or Lady of the Lake classrebuilt 1895 |
|---|---|
| Driver diameter | 2,362 mm |
| Boiler pressure | 10.3 bar |
| Expansion type | simple expansion |
| Cylinders | two, 406 x 610 mm |
Power
| Property | London & North Western Problem or Lady of the Lake classrebuilt 1895 |
|---|---|
| Power source | steam |
| Estimated power | 373 kW (507 PS) |
| Starting effort | 37.5 kN |
Calculated values
| Property | London & North Western Problem or Lady of the Lake classrebuilt 1895 |
|---|---|
| Factor of adhesion | 1 : 3.79 |
| Optimal speed | 61 km/h |
| Power-to-weight ratio | 11.7 kW/t |
| Heating Surface Equivalent | 143.8 m² |
| Cylinder volume/HSE | 1 : 1,099.68 |
| Adhesive weight/Total | 1 : 2.20 |
| Tractive force/Heating surface | 1 : 7.84 |
| Grate area/Heating surface | 1 : 62.85 |
| Firebox/Tube surface | 1 : 10.36 |
