Prussian P 7
| Prussian P 7 | |
|---|---|
 Prussian P 7
|
|
| Number: | 18th |
| Manufacturer: | Grafenstaden |
| Year of construction (s): | 1899-1902 |
| Axis formula : | 2'C |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 18,050 mm |
| Length: | 10,600 mm (without tender) |
| Empty mass: | 54.7 t |
| Service mass: | 61.8 t |
| Friction mass: | 44.5 t |
| Wheel set mass : | 15.1 t |
| Top speed: | 90 km / h |
| Driving wheel diameter: | 1,750 mm |
| Impeller diameter front: | 850 / 1,000 mm |
| Control type : | Heusiger |
| Number of cylinders: | 4th |
| Cylinder diameter: | 2 × 350/550 mm |
| Piston stroke: | 640 mm |
| Boiler overpressure: | 14 bar |
| Number of heating pipes: | 216 |
| Number of smoke tubes: | 0 |
| Heating pipe length: | 4,200 mm |
| Grate area: | 2.40 m² |
| Tubular heating surface: | 128.2 m² |
| Evaporation heating surface: | 139.50 m² |
| Tender: | pr 2'2 'T 16 |
| Water supply: | 16.0 m³ |
| Brake: | Air brake |
The steam locomotives of the class P 7 of the Prussian State Railways were tenders - locomotives for passenger transport.
development
This locomotive was developed after the French railways had already had good experiences with locomotives of the de Glehn type . In total, however, only 18 machines of this series were purchased.
In this vehicle, the high-pressure cylinders drove the second coupling axle , while the low- pressure cylinders drove the first. In addition, it had similarities with the Baden IV e and the Alsace-Lorraine P 5 built a year earlier .
The locomotives were used on the routes between Cologne and Hagen , Cologne and Trier and Frankfurt and Bebra . Since they were very dissatisfied due to the high operating costs and the lack of steam development, the machines were decommissioned during the First World War . Five machines were handed over to the Belgian State Railways .
The Prussian P 6 was unsuitable as a replacement on the mountain routes.
The machines were having a Tender respondents fitted the Prussian type 2'2 'T 16th
Individual evidence
- ↑ a b c d Lothar Spielhoff: Länderbahn steam locomotives . tape 1 . Prussia, Mecklenburg, Oldenburg, Saxony and Alsace-Lorraine. Weltbild, Augsburg 1995, ISBN 3-89350-819-8 , p. 64 (first edition: Franckh-Kosmos, Stuttgart 1990).
- ↑ Thomas Samek: Die series 37 0-2 , EK-Verlag, Freiburg 2006, ISBN 3-88255-126-7 , p. 115