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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 Allan valve gear |
|---|---|
| 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 Allan valve gear |
|---|---|
| Length | 16.76 m |
| Length loco | 10.41 m |
| Wheelbase | 4.50 m |
| Rigid wheelbase | 4.50 m |
| Empty weight | 52.2 t |
| Service weight | 60 t |
| Adhesive weight | 60 t |
| Axle load | 15.1 t |
| Total weight | 93.3 t |
| Water capacity | 12,000 l |
| Fuel capacity | 5 t (coal) |
Boiler
| Property | Prussian G 9 Allan valve gear |
|---|---|
| Grate area | 3.053 m² |
| Firebox surface | 11.814 m² |
| Tube heating surface | 188.305 m² |
| Evaporative heating surface | 200.119 m² |
| Total heating surface | 200.1 m² |
Power plant
| Property | Prussian G 9 Allan valve gear |
|---|---|
| Driver diameter | 1,250 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | two, 550 x 630 mm |
Power
| Property | Prussian G 9 Allan valve gear |
|---|---|
| Power source | steam |
| Indicated power | 680 kW (925 PS) |
| Top speed | 45 km/h |
| Starting effort | 155.5 kN |
Calculated values
| Property | Prussian G 9 Allan valve gear |
|---|---|
| Factor of adhesion | 1 : 3.78 |
| Optimal speed | 27 km/h |
| Power-to-weight ratio | 11.3 kW/t |
| Heating Surface Equivalent | 259.2 m² |
| Cylinder volume/HSE | 1 : 1,154.97 |
| Adhesive weight/Total | 1 : 1.00 |
| Tractive force/Heating surface | 1 : 16.23 |
| Grate area/Heating surface | 1 : 65.55 |
| Firebox/Tube surface | 1 : 15.94 |
