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London & North Western 17 inch Coal Engine
Francis Webb developed the 17 inch coal engine in the early 1870s as his first design for the LNWR. It was created under the requirement that production and operation should be as cheap as possible. These three-axle m...
| London & North Western 17 inch Coal EngineRemove | |
|---|---|
| Variant | Standard |
| Built | 1873-1892 |
| Manufacturers | Crewe |
| Wheel arrangement | C |
| Gauge | 1435 mm |
| Length | |
| Service mass | 30024 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | London & North Western 17 inch Coal Engine Standard Remove |
|---|---|
| Built | 1873-1892 |
| Manufacturers | Crewe |
| Wheel arrangement | 0-6-0 (Six-coupled) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | London & North Western 17 inch Coal Engine Standard Remove |
|---|---|
| Wheelbase | 4.72 m |
| Service mass | 30 t |
| Adhesion mass | 30 t |
| Total mass | 55.4 t |
| Rigid wheelbase | 4.72 m |
| Axle load | 10.5 t |
| Water capacity | 8,184 l |
Boiler
| Property | London & North Western 17 inch Coal Engine Standard Remove |
|---|---|
| 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 17 inch Coal Engine Standard Remove |
|---|---|
| Driver diameter | 1,295 mm |
| Boiler pressure | 9.7 bar |
| Expansion type | simple expansion |
| Cylinders | two, 432 x 610 mm |
Power
| Property | London & North Western 17 inch Coal Engine Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 261 kW (355 PS) |
| Starting effort | 72.0 kN |
Calculated values
| Property | London & North Western 17 inch Coal Engine Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.09 |
| Optimal speed | 23 km/h |
| Power-to-weight ratio | 8.7 kW/t |
| Heating Surface Equivalent | 143.8 m² |
| Cylinder volume/HSE | 1 : 1,241.43 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 15.05 |
| Grate area/Heating surface | 1 : 62.85 |
| Firebox/Tube surface | 1 : 10.36 |
