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Great Eastern class S69
Shortly before the First World War, the Great Eastern was looking for a replacement for the existing 4-4-0 locomotives, which were to pull the heavy express trains over the Great Eastern Main Line to the North Sea, es...
General
| Property | Great Eastern class S69Remove |
|---|---|
| Built | 1911-1921, 1928 |
| Manufacturers | Stratford, Beardmore, Beyer, Peacock & Co. |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Great Eastern class S69Remove |
|---|---|
| Length | 17.55 m |
| Wheelbase | 14.71 m |
| Rigid wheelbase | 4.27 m |
| Total wheelbase | 8.69 m |
| Service weight | 67.3 t |
| Adhesive weight | 44.7 t |
| Axle load | 16.3 t |
| Total weight | 107.2 t |
| Water capacity | 16,822 l |
| Fuel capacity | 4.1 t (coal) |
Boiler
| Property | Great Eastern class S69Remove |
|---|---|
| Grate area | 2.462 m² |
| Firebox surface | 13.332 m² |
| Tube heating surface | 138.379 m² |
| Evaporative heating surface | 151.711 m² |
| Superheater surface | 26.57 m² |
| Total heating surface | 178.3 m² |
Power plant
| Property | Great Eastern class S69Remove |
|---|---|
| Driver diameter | 1,981 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 508 x 711 mm |
Power
| Property | Great Eastern class S69Remove |
|---|---|
| Power source | steam |
| Estimated power | 932 kW (1,267 PS) |
| Starting effort | 97.7 kN |
Calculated values
| Property | Great Eastern class S69Remove |
|---|---|
| Factor of adhesion | 1 : 4.49 |
| Optimal speed | 58 km/h |
| Power-to-weight ratio | 13.8 kW/t |
| Heating Surface Equivalent | 271.5 m² |
| Cylinder volume/HSE | 1 : 1,061.82 |
| Adhesive weight/Total | 1 : 1.51 |
| Tractive force/Heating surface | 1 : 11.45 |
| Grate area/Heating surface | 1 : 72.41 |
| Firebox/Tube surface | 1 : 10.38 |
| Total/Superheater | 1 : 5.71 |
