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London, Midland & Scottish Coronation class
For a new non-stop train between London and Glasgow, the LMS commissioned a new Pacific in the mid-1930s, which was supposed to be stronger, more reliable and easier to maintain than the Princess Royal. The train was ...
General
| Property | London, Midland & Scottish Coronation classRemove |
|---|---|
| Built | 1937-1948 |
| Manufacturers | Crewe |
| Wheel arrangement | 4-6-2 (Pacific) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | London, Midland & Scottish Coronation classRemove |
|---|---|
| Wheelbase | 11.28 m |
| Rigid wheelbase | 4.42 m |
| Total wheelbase | 19.18 m |
| Service weight | 108.1 t |
| Adhesive weight | 68.2 t |
| Axle load | 22.9 t |
| Total weight | 166 t |
| Water capacity | 18,185 l |
| Fuel capacity | 10.2 t (coal) |
Boiler
| Property | London, Midland & Scottish Coronation classRemove |
|---|---|
| Grate area | 4.645 m² |
| Firebox surface | 21.414 m² |
| Tube heating surface | 258.735 m² |
| Evaporative heating surface | 280.149 m² |
| Superheater surface | 79.153 m² |
| Total heating surface | 359.3 m² |
Power plant
| Property | London, Midland & Scottish Coronation classRemove |
|---|---|
| Driver diameter | 2,057 mm |
| Boiler pressure | 17.2 bar |
| Expansion type | simple expansion |
| Cylinders | four, 419 x 711 mm |
Power
| Property | London, Midland & Scottish Coronation classRemove |
|---|---|
| Power source | steam |
| Estimated power | 2,461 kW (3,346 PS) |
| Starting effort | 177.9 kN |
Calculated values
| Property | London, Midland & Scottish Coronation classRemove |
|---|---|
| Factor of adhesion | 1 : 3.76 |
| Optimal speed | 85 km/h |
| Power-to-weight ratio | 22.8 kW/t |
| Heating Surface Equivalent | 545.5 m² |
| Cylinder volume/HSE | 1 : 719.39 |
| Adhesive weight/Total | 1 : 1.59 |
| Tractive force/Heating surface | 1 : 10.34 |
| Grate area/Heating surface | 1 : 77.35 |
| Firebox/Tube surface | 1 : 12.08 |
| Total/Superheater | 1 : 3.54 |
