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Buenos Aires Great Southern classes 12A, 12B and 12D
Beginning in 1907, the Buenos Aires Great Southern received some batches of Ten-Wheelers with different cylinder configurations from British manufacturers. The first was the class 12A with a two-cylinder compound engi...
General
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D 12D |
|---|---|
| Built | 1914 |
| Manufacturers | Beyer, Peacock & Co. |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,676 mm (Indian broad gauge) |
Dimensions and weights
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D 12D |
|---|---|
| Wheelbase | 7.96 m |
| Rigid wheelbase | 4.34 m |
| Service weight | 68.3 t |
| Adhesive weight | 50.5 t |
| Axle load | 16.9 t |
| Total weight | 114.3 t |
| Water capacity | 15,910 l |
| Fuel capacity | 7.1 t (coal) |
Boiler
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D 12D |
|---|---|
| Grate area | 2.323 m² |
| Firebox surface | 12.542 m² |
| Tube heating surface | 111.948 m² |
| Evaporative heating surface | 124.49 m² |
| Superheater surface | 28.8 m² |
| Total heating surface | 153.3 m² |
Power plant
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D 12D |
|---|---|
| Driver diameter | 1,829 mm |
| Boiler pressure | 11 bar |
| Expansion type | simple expansion |
| Cylinders | two, 559 x 660 mm |
Power
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D 12D |
|---|---|
| Power source | steam |
| Estimated power | 708 kW (963 PS) |
| Starting effort | 105.7 kN |
Calculated values
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D 12D |
|---|---|
| Factor of adhesion | 1 : 4.69 |
| Optimal speed | 40 km/h |
| Power-to-weight ratio | 10.4 kW/t |
| Heating Surface Equivalent | 244.8 m² |
| Cylinder volume/HSE | 1 : 1,323.21 |
| Adhesive weight/Total | 1 : 1.35 |
| Tractive force/Heating surface | 1 : 14.41 |
| Grate area/Heating surface | 1 : 65.99 |
| Firebox/Tube surface | 1 : 8.93 |
| Total/Superheater | 1 : 4.32 |
