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Prussian S 9 Altona 561 and 562
In search of a very fast steam locomotive for lighter trains, railway inspector Gustav Wittfeld developed the S 9 with the 4-4-4 wheel arrangement, which should not be confused with the S 9 that was mass-produced a fe...
General
| Property | Prussian S 9 Altona 561 and 562Remove |
|---|---|
| Built | 1904 |
| Manufacturers | Henschel |
| Wheel arrangement | 4-4-4 (Reading) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Prussian S 9 Altona 561 and 562Remove |
|---|---|
| Length | 24.82 m |
| Length loco | 146.50 m |
| Wheelbase | 12.40 m |
| Rigid wheelbase | 2.56 m |
| Empty weight | 79 t |
| Service weight | 89.5 t |
| Adhesive weight | 36.6 t |
| Axle load | 17 t |
| Water capacity | 16,600 l |
| Fuel capacity | 7 t (coal) |
Boiler
| Property | Prussian S 9 Altona 561 and 562Remove |
|---|---|
| Grate area | 4.39 m² |
| Firebox surface | 15.24 m² |
| Tube heating surface | 244.52 m² |
| Evaporative heating surface | 259.76 m² |
| Total heating surface | 259.8 m² |
Power plant
| Property | Prussian S 9 Altona 561 and 562Remove |
|---|---|
| Driver diameter | 2,200 mm |
| Boiler pressure | 14 bar |
| Expansion type | compound |
| Cylinders | three, HP: 524 x 630 mm and LP: 524 x 630 mm |
Power
| Property | Prussian S 9 Altona 561 and 562Remove |
|---|---|
| Power source | steam |
| Indicated power | 1,050 kW (1,428 PS) |
| Top speed | 137 km/h |
| Starting effort | 70.2 kN |
| Starting effort simple | 84.2 kN |
Calculated values
| Property | Prussian S 9 Altona 561 and 562Remove |
|---|---|
| Factor of adhesion | 1 : 5.12 |
| Optimal speed | 92 km/h |
| Power-to-weight ratio | 11.7 kW/t |
| Heating Surface Equivalent | 336.0 m² |
| Cylinder volume/HSE | 1 : 909.89 |
| Adhesive weight/Total | 1 : 2.45 |
| Tractive force/Heating surface | 1 : 5.64 |
| Grate area/Heating surface | 1 : 59.17 |
| Firebox/Tube surface | 1 : 16.04 |
