Compare locomotives
Add a locomotive
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 | 12B superheated |
| Built | 1924 |
| Manufacturers | BAGS |
| Wheel arrangement | 2C |
| Gauge | 1676 mm |
| Length | |
| Service mass | 71047 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D12B superheated |
|---|---|
| Built | 1924 |
| Manufacturers | BAGS |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,676 mm |
Dimensions and weights
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D12B superheated |
|---|---|
| Wheelbase | 7.90 m |
| Service mass | 71 t |
| Adhesion mass | 49.6 t |
| Total mass | 121.1 t |
| Rigid wheelbase | 3.86 m |
| Axle load | 16.5 t |
| Water capacity | 18,185 l |
| Fuel capacity | 7.1 t (coal) |
Boiler
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D12B superheated |
|---|---|
| Grate area | 2.601 m² |
| Firebox surface | 12.635 m² |
| Tube heating surface | 115.293 m² |
| Evaporative heating surface | 127.928 m² |
| Superheater surface | 30.101 m² |
| Total heating surface | 158.0 m² |
Power plant
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D12B superheated |
|---|---|
| Driver diameter | 1,829 mm |
| Boiler pressure | 13.8 bar |
| Expansion type | compound |
| Cylinders | four, HP: 356 x 660 mm and LP: 584 x 660 mm |
Power
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D12B superheated |
|---|---|
| Power source | steam |
| Estimated power | 895 kW (1,217 PS) |
| Starting effort | 78.1 kN |
| Starting effort simple | 93.7 kN |
Calculated values
| Property | Buenos Aires Great Southern classes 12A, 12B and 12D12B superheated |
|---|---|
| Factor of adhesion | 1 : 6.23 |
| Optimal speed | 71 km/h |
| Power-to-weight ratio | 12.6 kW/t |
| Heating Surface Equivalent | 251.3 m² |
| Cylinder volume/HSE | 1 : 1,226.37 |
| Adhesive weight/Total | 1 : 1.43 |
| Tractive force/Heating surface | 1 : 10.32 |
| Grate area/Heating surface | 1 : 60.76 |
| Firebox/Tube surface | 1 : 9.12 |
| Total/Superheater | 1 : 4.25 |
