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Great Northern (UK) No. 472 and 473
The Great Northern needed new locomotives to accommodate the growing freight traffic on the Metropolitan Line between King's Cross and the goods yards between Farringdon Street and Ludgate Hill. The particular challen...
| Great Northern (UK) No. 472 and 473Remove | |
|---|---|
| Variant | Standard |
| Built | 1866 |
| Manufacturers | Avonside |
| Wheel arrangement | D t |
| Gauge | 1435 mm |
| Length | |
| Service mass | 56899 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Great Northern (UK) No. 472 and 473 Standard Remove |
|---|---|
| Built | 1866 |
| Manufacturers | Avonside |
| Wheel arrangement | 0-8-0T (Eight-coupled) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Northern (UK) No. 472 and 473 Standard Remove |
|---|---|
| Wheelbase | 4.83 m |
| Service mass | 56.9 t |
| Adhesion mass | 56.9 t |
| Rigid wheelbase | 1.65 m |
| Axle load | 14.2 t |
Boiler
| Property | Great Northern (UK) No. 472 and 473 Standard Remove |
|---|---|
| Grate area | 1.579 m² |
| Firebox surface | 9.29 m² |
| Tube heating surface | 134.719 m² |
| Evaporative heating surface | 144.009 m² |
| Total heating surface | 144.0 m² |
Power plant
| Property | Great Northern (UK) No. 472 and 473 Standard Remove |
|---|---|
| Driver diameter | 1,067 mm |
| Boiler pressure | 10.3 bar |
| Expansion type | simple expansion |
| Cylinders | two, 470 x 610 mm |
Power
| Property | Great Northern (UK) No. 472 and 473 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 317 kW (431 PS) |
| Starting effort | 110.9 kN |
Calculated values
| Property | Great Northern (UK) No. 472 and 473 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 5.03 |
| Optimal speed | 18 km/h |
| Power-to-weight ratio | 5.6 kW/t |
| Heating Surface Equivalent | 190.5 m² |
| Cylinder volume/HSE | 1 : 1,110.13 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 16.09 |
| Grate area/Heating surface | 1 : 91.20 |
| Firebox/Tube surface | 1 : 14.50 |
