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London & North Western 4ft 6in Tank
This class consisted of 220 2-4-2T tank locomotives built for local passenger trains at Crewe between 1879 and 1898. The designation came from the diameter of the wheels at the centres, while the tires measured four f...
General
| Property | London & North Western 4ft 6in TankRemove |
|---|---|
| Built | 1879-1898 |
| Manufacturers | Crewe |
| Wheel arrangement | 2-4-2T (Columbia) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | London & North Western 4ft 6in TankRemove |
|---|---|
| Wheelbase | 6.48 m |
| Rigid wheelbase | 2.36 m |
| Service weight | 46.7 t |
| Adhesive weight | 27.4 t |
| Axle load | 13.7 t |
Boiler
| Property | London & North Western 4ft 6in TankRemove |
|---|---|
| Grate area | 1.301 m² |
| Firebox surface | 7.897 m² |
| Tube heating surface | 82.405 m² |
| Evaporative heating surface | 90.302 m² |
| Total heating surface | 90.3 m² |
Power plant
| Property | London & North Western 4ft 6in TankRemove |
|---|---|
| Driver diameter | 1,435 mm |
| Boiler pressure | 10.3 bar |
| Expansion type | simple expansion |
| Cylinders | two, 432 x 508 mm |
Power
| Property | London & North Western 4ft 6in TankRemove |
|---|---|
| Power source | steam |
| Estimated power | 261 kW (355 PS) |
| Starting effort | 58.0 kN |
Calculated values
| Property | London & North Western 4ft 6in TankRemove |
|---|---|
| Factor of adhesion | 1 : 4.64 |
| Optimal speed | 27 km/h |
| Power-to-weight ratio | 5.6 kW/t |
| Heating Surface Equivalent | 129.8 m² |
| Cylinder volume/HSE | 1 : 1,146.35 |
| Adhesive weight/Total | 1 : 1.70 |
| Tractive force/Heating surface | 1 : 13.42 |
| Grate area/Heating surface | 1 : 69.41 |
| Firebox/Tube surface | 1 : 10.43 |
