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Prussian P 8
The P 8 was a passenger locomotive that was mainly developed as a successor to the P 6 and was later used as the basis for the development of the S 10. It is characterized by the fact that, with almost 4,000 built, it...
General
| Property | Prussian P 8 ca. 1921 variant |
|---|---|
| Built | 1906-1923 |
| Manufacturers | AEG, BMAG, Borsig, Hanomag, Henschel, Hohenzollern, Humboldt, MBG Karlsruhe, Linke-Hofmann, Schichau, Union Königsberg, Vulcan, Wolf |
| Wheel arrangement | 4-6-0 (Ten-wheeler) |
| Gauge | 1,435 mm (Standard gauge) |
Dimensions and weights
| Property | Prussian P 8 ca. 1921 variant |
|---|---|
| Length | 18.59 m |
| Wheelbase | 8.35 m |
| Rigid wheelbase | 4.58 m |
| Total wheelbase | 15.67 m |
| Empty weight | 69.5 t |
| Service weight | 76 t |
| Adhesive weight | 51 t |
| Axle load | 17 t |
| Total weight | 127 t |
| Water capacity | 21,500 l |
| Fuel capacity | 7 t (coal) |
Boiler
| Property | Prussian P 8 ca. 1921 variant |
|---|---|
| Grate area | 2.68 m² |
| Firebox surface | 14.75 m² |
| Tube heating surface | 130.38 m² |
| Evaporative heating surface | 145.13 m² |
| Superheater surface | 58.9 m² |
| Total heating surface | 204.0 m² |
Power plant
| Property | Prussian P 8 ca. 1921 variant |
|---|---|
| Driver diameter | 1,750 mm |
| Boiler pressure | 12 bar |
| Expansion type | simple expansion |
| Cylinders | two, 575 x 630 mm |
Power
| Property | Prussian P 8 ca. 1921 variant |
|---|---|
| Power source | steam |
| Indicated power | 868 kW (1,180 PS) |
| Top speed | 100 km/h |
| Starting effort | 121.4 kN |
Calculated values
| Property | Prussian P 8 ca. 1921 variant |
|---|---|
| Factor of adhesion | 1 : 4.12 |
| Optimal speed | 43 km/h |
| Power-to-weight ratio | 11.4 kW/t |
| Heating Surface Equivalent | 336.7 m² |
| Cylinder volume/HSE | 1 : 971.80 |
| Adhesive weight/Total | 1 : 1.49 |
| Tractive force/Heating surface | 1 : 12.43 |
| Grate area/Heating surface | 1 : 76.13 |
| Firebox/Tube surface | 1 : 8.84 |
| Total/Superheater | 1 : 2.46 |
