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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 | rebuilt A55R |
| Built | 1906 |
| Manufacturers | Stratford |
| Wheel arrangement | D |
| Gauge | 1435 mm |
| Length | 17348 mm |
| Service mass | 55210 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Great Eastern class A55 “Decapod”rebuilt A55R |
|---|---|
| Built | 1906 |
| Manufacturers | Stratford |
| Wheel arrangement | 0-8-0 (Eight-coupled) |
| Gauge | 1,435 mm |
Dimensions and weights
| Property | Great Eastern class A55 “Decapod”rebuilt A55R |
|---|---|
| Length | 17.35 m |
| Wheelbase | 7.09 m |
| Service mass | 55.2 t |
| Adhesion mass | 55.2 t |
| Total mass | 94.1 t |
| Rigid wheelbase | 2.67 m |
| Axle load | 16 t |
| Water capacity | 13,249 l |
| Fuel capacity | 5.1 t (coal) |
Boiler
| Property | Great Eastern class A55 “Decapod”rebuilt A55R |
|---|---|
| Grate area | 2.127 m² |
| Firebox surface | 12.207 m² |
| Tube heating surface | 161.521 m² |
| Evaporative heating surface | 173.729 m² |
| Total heating surface | 173.7 m² |
Power plant
| Property | Great Eastern class A55 “Decapod”rebuilt A55R |
|---|---|
| Driver diameter | 1,372 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 470 x 610 mm |
Power
| Property | Great Eastern class A55 “Decapod”rebuilt A55R |
|---|---|
| Power source | steam |
| Estimated power | 690 kW (938 PS) |
| Starting effort | 103.5 kN |
Calculated values
| Property | Great Eastern class A55 “Decapod”rebuilt A55R |
|---|---|
| Factor of adhesion | 1 : 5.23 |
| Optimal speed | 40 km/h |
| Power-to-weight ratio | 12.5 kW/t |
| Heating Surface Equivalent | 234.8 m² |
| Cylinder volume/HSE | 1 : 900.63 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 12.45 |
| Grate area/Heating surface | 1 : 81.68 |
| Firebox/Tube surface | 1 : 13.23 |
