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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...
| Buenos Aires Great Southern classes 12A, 12B and 12DRemove | |
|---|---|
| Variant | 12A |
| Built | 1907 |
| Manufacturers | Beyer, Peacock & Co.;North British |
| Wheel arrangement | 2C |
| Gauge | 1676 mm |
| Length | |
| Service mass | 66145 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D12A |
|---|---|
| Built | 1907 |
| Manufacturers | Beyer, Peacock & Co., North British |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,676 mm |
Dimensions and weights
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D12A |
|---|---|
| Wheelbase | 7.90 m |
| Service mass | 66.1 t |
| Adhesion mass | 44.7 t |
| Total mass | 112.1 t |
| Rigid wheelbase | 3.86 m |
| Axle load | 14.9 t |
| Water capacity | 15,910 l |
| Fuel capacity | 7.1 t (coal) |
Boiler
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D12A |
|---|---|
| Grate area | 2.323 m² |
| Firebox surface | 12.914 m² |
| Tube heating surface | 138.89 m² |
| Evaporative heating surface | 151.804 m² |
| Total heating surface | 151.8 m² |
Power plant
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D12A |
|---|---|
| Driver diameter | 1,829 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | compound |
| Cylinders | two, HP: 698 x 660 mm and LP: 483 x 660 mm |
Power
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D12A |
|---|---|
| Power source | steam |
| Estimated power | 597 kW (812 PS) |
| Starting effort | 66.7 kN |
| Starting effort simple | 80.1 kN |
Calculated values
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D12A |
|---|---|
| Factor of adhesion | 1 : 6.57 |
| Optimal speed | 55 km/h |
| Power-to-weight ratio | 9.0 kW/t |
| Heating Surface Equivalent | 216.4 m² |
| Cylinder volume/HSE | 1 : 1,448.72 |
| Adhesive weight/Total | 1 : 1.48 |
| Tractive force/Heating surface | 1 : 9.18 |
| Grate area/Heating surface | 1 : 65.35 |
| Firebox/Tube surface | 1 : 10.75 |
