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Prussian G 9
Although Prussia had already built a superheated freight locomotive with the G 8 from 1902, they were not yet completely convinced of the superheater technology and thus designed the G 9. The G 7 was used as the basis...
General
| Property | Prussian G 9 superheated |
|---|---|
| Built | 1908-1911 |
| Manufacturers | Schichau |
| Wheel arrangement | 0-8-0 (Eight-coupled) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Prussian G 9 superheated |
|---|---|
| Length | 16.76 m |
| Length loco | 10.41 m |
| Wheelbase | 4.50 m |
| Rigid wheelbase | 4.50 m |
| Service weight | 65.5 t |
| Adhesive weight | 65.5 t |
| Axle load | 16.4 t |
| Total weight | 99.4 t |
| Water capacity | 12,000 l |
| Fuel capacity | 5 t (coal) |
Boiler
| Property | Prussian G 9 superheated |
|---|---|
| Grate area | 3.5 m² |
| Firebox surface | 11.7 m² |
| Tube heating surface | 149 m² |
| Evaporative heating surface | 160.7 m² |
| Superheater surface | 57 m² |
| Total heating surface | 217.7 m² |
Power plant
| Property | Prussian G 9 superheated |
|---|---|
| Driver diameter | 1,250 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | two, 550 x 630 mm |
Power
| Property | Prussian G 9 superheated |
|---|---|
| Power source | steam |
| Estimated power | 900 kW (1,224 PS) |
| Top speed | 45 km/h |
| Starting effort | 155.5 kN |
Calculated values
| Property | Prussian G 9 superheated |
|---|---|
| Factor of adhesion | 1 : 4.13 |
| Optimal speed | 35 km/h |
| Power-to-weight ratio | 13.7 kW/t |
| Heating Surface Equivalent | 333.2 m² |
| Cylinder volume/HSE | 1 : 898.42 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 14.92 |
| Grate area/Heating surface | 1 : 62.20 |
| Firebox/Tube surface | 1 : 12.74 |
| Total/Superheater | 1 : 2.82 |
