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Great Eastern class A55 “Decapod”
In view of the plans for a new electrified line, the Great Eastern tried to counter with a particularly powerful passenger tank locomotive. In order to be able to keep up with future electric railcars, the greatest at...
| Great Eastern class A55 “Decapod”Remove | |
|---|---|
| Variant | as built |
| Built | 1902 |
| Manufacturers | Stratford |
| Wheel arrangement | E t |
| Gauge | 1435 mm |
| Length | 11430 mm |
| Service mass | 81284 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Great Eastern class A55 “Decapod”as built |
|---|---|
| Built | 1902 |
| Manufacturers | Stratford |
| Wheel arrangement | 0-10-0T (Ten-coupled) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Eastern class A55 “Decapod”as built |
|---|---|
| Length | 11.43 m |
| Wheelbase | 5.99 m |
| Service mass | 81.3 t |
| Adhesion mass | 81.3 t |
| Rigid wheelbase | 5.99 m |
| Axle load | 17 t |
| Water capacity | 4,921 l |
| Fuel capacity | 2 t (coal) |
Boiler
| Property | Great Eastern class A55 “Decapod”as built |
|---|---|
| Grate area | 3.902 m² |
| Firebox surface | 12.235 m² |
| Tube heating surface | 267.403 m² |
| Evaporative heating surface | 279.638 m² |
| Total heating surface | 279.6 m² |
Power plant
| Property | Great Eastern class A55 “Decapod”as built |
|---|---|
| Driver diameter | 1,372 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | simple expansion |
| Cylinders | three, 470 x 610 mm |
Power
| Property | Great Eastern class A55 “Decapod”as built |
|---|---|
| Power source | steam |
| Estimated power | 969 kW (1,317 PS) |
| Starting effort | 172.5 kN |
Calculated values
| Property | Great Eastern class A55 “Decapod”as built |
|---|---|
| Factor of adhesion | 1 : 4.62 |
| Optimal speed | 34 km/h |
| Power-to-weight ratio | 11.9 kW/t |
| Heating Surface Equivalent | 340.8 m² |
| Cylinder volume/HSE | 1 : 930.57 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 12.89 |
| Grate area/Heating surface | 1 : 71.67 |
| Firebox/Tube surface | 1 : 21.86 |
