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Mexican State Railway class G-031
The G-031, sometimes also called GR-031, was a class of superheated Consolidations built for three-foot narrow gauge . It was based on the G-030 and basically had the same boiler. It had the same firebox , but less tu...
| Mexican State Railway class G-031Remove | |
|---|---|
| Variant | Standard |
| Built | 1936, 1944 |
| Manufacturers | ALCO;Acámbaro |
| Wheel arrangement | 1D |
| Gauge | 914;1435 mm |
| Length | |
| Service mass | 53524 kg |
| Top speed | |
| Power | |
| Engine |
General
| Property | Mexican State Railway class G-031 Standard Remove |
|---|---|
| Built | 1936, 1944 |
| Manufacturers | ALCO, Acámbaro |
| Wheel arrangement | 2-8-0 (Consolidation) |
| Gauge | 914 mm; 1,435 mm |
Dimensions and weights
| Property | Mexican State Railway class G-031 Standard Remove |
|---|---|
| Wheelbase | 5.77 m |
| Total wheelbase | 14.24 m |
| Service mass | 53.5 t |
| Adhesion mass | 49.9 t |
| Total mass | 94.3 t |
| Rigid wheelbase | 3.51 m |
| Axle load | 12.5 t |
| Water capacity | 13,627 l |
| Fuel capacity | 1 t (oil) |
Boiler
| Property | Mexican State Railway class G-031 Standard Remove |
|---|---|
| Grate area | 1.737 m² |
| Firebox surface | 7.339 m² |
| Tube heating surface | 107.21 m² |
| Evaporative heating surface | 114.55 m² |
| Superheater surface | 31.494 m² |
| Total heating surface | 146.0 m² |
Power plant
| Property | Mexican State Railway class G-031 Standard Remove |
|---|---|
| Driver diameter | 1,041 mm |
| Boiler pressure | 12.4 bar |
| Expansion type | simple expansion |
| Cylinders | two, 457 x 559 mm |
Power
| Property | Mexican State Railway class G-031 Standard Remove |
|---|---|
| Power source | steam |
| Estimated power | 597 kW |
| Starting effort | 118.3 kN |
Calculated values
| Property | Mexican State Railway class G-031 Standard Remove |
|---|---|
| Factor of adhesion | 1 : 4.14 |
| Optimal speed | 31 km/h |
| Power-to-weight ratio | 11.2 kW/t |
| Heating Surface Equivalent | 214.2 m² |
| Cylinder volume/HSE | 1 : 856.45 |
| Adhesive weight/Total | 1 : 1.07 |
| Tractive force/Heating surface | 1 : 16.92 |
| Grate area/Heating surface | 1 : 84.08 |
| Firebox/Tube surface | 1 : 14.61 |
| Total/Superheater | 1 : 3.64 |
