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Buenos Aires Great Southern class 8A
In 1906, North British built 34 2-6-2T tank locomotives of the class 8A for the Ferrocarril del Sud, or Buenos Aires Great Southern. These locomotives had an oil fired boiler with Belpaire firebox , outside cylinders ...
| Buenos Aires Great Southern class 8ARemove | |
|---|---|
| Variant | superheated |
| Built | 1906 |
| Manufacturers | North British |
| Wheel arrangement | 1C1 st |
| Gauge | 1676 mm |
| Length | |
| Service mass | 74100 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Buenos Aires Great Southern class 8Asuperheated |
|---|---|
| Built | 1906 |
| Manufacturers | North British |
| Wheel arrangement | 2-6-2ST (Prairie) |
| Gauge | 1,676 mm |
Dimensions and weights
| Property | Buenos Aires Great Southern class 8Asuperheated |
|---|---|
| Wheelbase | 9.20 m |
| Service mass | 74.1 t |
| Adhesion mass | 49.7 t |
| Rigid wheelbase | 4.27 m |
| Axle load | 16.8 t |
| Water capacity | 5,455 l |
| Fuel capacity | 2,389 l (oil) |
Boiler
| Property | Buenos Aires Great Southern class 8Asuperheated |
|---|---|
| Grate area | 2.51 m² |
| Firebox surface | 13.281 m² |
| Tube heating surface | 105.636 m² |
| Evaporative heating surface | 118.916 m² |
| Superheater surface | 24.526 m² |
| Total heating surface | 143.4 m² |
Power plant
| Property | Buenos Aires Great Southern class 8Asuperheated |
|---|---|
| Driver diameter | 1,575 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 483 x 660 mm |
Power
| Property | Buenos Aires Great Southern class 8Asuperheated |
|---|---|
| Power source | steam |
| Estimated power | 820 kW (1,115 PS) |
| Starting effort | 103.0 kN |
Calculated values
| Property | Buenos Aires Great Southern class 8Asuperheated |
|---|---|
| Factor of adhesion | 1 : 4.74 |
| Optimal speed | 48 km/h |
| Power-to-weight ratio | 11.1 kW/t |
| Heating Surface Equivalent | 234.4 m² |
| Cylinder volume/HSE | 1 : 1,030.84 |
| Adhesive weight/Total | 1 : 1.49 |
| Tractive force/Heating surface | 1 : 15.00 |
| Grate area/Heating surface | 1 : 57.15 |
| Firebox/Tube surface | 1 : 7.95 |
| Total/Superheater | 1 : 4.85 |
