Prussian S 2
Express train locomotives of the Prussian State Railways were summarized in the class S 2 . There were the types of the railway departments Hanover, Erfurt and Main-Neckar.
Hanover type
| S 2 type Hanover (Prussia) | |
|---|---|
| Numbering: | S 2 Altona 101, 102 |
| Number: | 2 |
| Manufacturer: | Henschel |
| Year of construction (s): | 1890 |
| Retirement: | 1912 |
| Type : | 2'B n2v |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 15,380 mm |
| Service mass: | 45.0 t |
| Friction mass: | 28.0 t |
| Wheel set mass : | 17.6 t |
| Top speed: | 100 km / h |
| Driving wheel diameter: | 1,960 mm |
| Impeller diameter front: | 980 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 450/650 mm |
| Piston stroke: | 600 mm |
| Boiler overpressure: | 12 bar |
| Grate area: | 2.07 m² |
| Evaporation heating surface: | 113.25 m² |
| Tender: | pr 3 T 10.5 |
| Water supply: | 10.5 m³ |
The locomotives of this design were the first of the Prussian state railways with the axle formula 2'B. In contrast to most of the other S 2, they were built in a composite construction. They were designed by August von Borries . A special feature is the so-called Hanover bogie. Here, the load is transferred directly to the longitudinal suspension spring via the two sliding blocks of the spring-loaded return device without loading the bogie. This principle was maintained until the end of the steam locomotive era.
Only two of the Hanover type, which Henschel had built in 1890, were put into service . First they had the numbers Hannover 20 and 21, then Altona 448 and 449 and finally S 2 Altona 101 and 102. Since they had difficulties getting there, like the other older compound machines, this type was no longer built. The locomotives were retired in 1912.
The vehicles were equipped with type 3 T 10.5 tenders .
Type Erfurt (normal type)
| S 2 type Erfurt (Prussia) DR class 13.0 |
|
|---|---|
 Prussian S 2, type Erfurt
|
|
| Numbering: | DR 13 001 |
| Number: | 153 |
| Year of construction (s): | 1891-1893 |
| Retirement: | 1926 |
| Type : | 2'B n2 (v) |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 15,615 mm |
| Service mass: | 48.7 t |
| Friction mass: | 28.7 t |
| Wheel set mass : | 14.3 t |
| Top speed: | 100 km / h |
| Driving wheel diameter: | 1,960 mm |
| Impeller diameter front: | 980 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 430 (440/600) mm |
| Piston stroke: | 600 mm |
| Boiler overpressure: | 12 bar |
| Grate area: | 2.27 m² |
| Evaporation heating surface: | 125.02 m² |
| Tender: | pr 3 T 15 |
| Water supply: | 15.0 m³ |
One year after the construction of the Hanover type, four more machines with the axle formula 2'B were manufactured by Henschel for the Erfurt head office , two of them in composite construction . Their heating surface was larger than that of the Hanover models. The S 2 of the Erfurt type belonged to the test series from 1891 with four express train and four passenger train locomotives each (see Prussian P 4.1 ), two of which were built in composite and two in twin design. Except for the changes necessary for the compound drive, they were structurally identical. As with the Erfurt P 4, the running bogie didn't really prove itself here either. In addition, the composite locomotives had design-related difficulties when approaching.
Based on this experience, only the twin design was continued in 148 additional copies in 1892. The locomotives were used in heavy express train service. After the S 3 was available in 1893 , the construction of the S 2 was stopped. When more powerful express train locomotives were available later, the S 2 was replaced by express train and passenger train service. From 1906 a total of 26 S 2 were rebuilt in composite design and then classified in the class S 3 .
A locomotive was delivered with a Lentz corrugated tube boiler; however, it did not achieve the desired performance. So she pulled a 210-ton train up a stretch of 5 per thousand at a speed of only 50 km / h. In addition, her boiler exploded in 1894. Then she received a boiler of the normal design.
The Erfurt compound machines were retired as Halls 103 and 104 in 1912.
In 1923, the Deutsche Reichsbahn took over seven S 2s converted to composite design as 13 001 - 007 in their drawing plan for steam locomotives . Only one locomotive was included in the 1925 redesignation plan as 13 001 , which was taken out of service by 1926. The locomotive originally intended as 13 001 had to be handed over to Poland and came to the Reichsbahn as 13 304 during World War II .
The vehicles were equipped with type 3 T 15 tenders .
Main-Neckar type
| S 2 type Main-Neckar (Prussia) | |
|---|---|
| Numbering: | Mainz 101-115 |
| Number: | 15th |
| Manufacturer: |
Cockerill , MBG Karlsruhe |
| Year of construction (s): | 1892-1902 |
| Type : | 1B1 n2 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 17,275 mm |
| Service mass: | 51.8 t |
| Friction mass: | 28.3 t |
| Wheel set mass : | 14.3 t |
| Top speed: | 100 km / h |
| Driving wheel diameter: | 2,100 mm |
| Impeller diameter front: | 1,250 mm |
| Rear wheel diameter: | 1,250 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 500 mm |
| Piston stroke: | 600 mm |
| Boiler overpressure: | 11.8 bar |
| Grate area: | 2.16 m² |
| Evaporation heating surface: | 119.00 m² |
| Tender: | 2'2 T 16 pr 3 T 11/13 |
| Water supply: | 11.0 / 13.0 / 16.0 m³ |
The S 2 of the Main-Neckar-Eisenbahn were express train locomotives wheel arrangement 1B1. The first eight of the 15 locomotives of this type were built in 1892 and 1895 by Cockerill in Belgium, the other seven 1898–1902 by MBG Karlsruhe based on the Belgian class 12. Because of their manufacturer and their appearance, they got the nickname crocodile . The railway company was split between the Prussian State Railways and the Baden State Railways in 1902, and the locomotives came into the Prussian inventory as S 2 Mainz 101–115.
The 1B1 wheel arrangement, which is unfamiliar in Germany, was for a time the wheel arrangement for express locomotives , especially in France , but had poorer running properties than the 2'B. The short overall wheelbase of the locomotives and the short distance between the two driving axles of only 2,165 mm were striking. Due to the diameter of the wheels of 2,100 mm, their flanges were only a few centimeters apart.
The vehicles were with Tender senders , the type 2'2 T 16 under the subsequent director of the Prussian state railways equipped with the types 3 T 11 or T 3. 13
literature
- Lothar Spielhoff: Länderbahn steam locomotives. Volume 1. Prussia, Mecklenburg, Oldenburg, Saxony and Alsace-Lorraine . In: German Railways . Franckh-Kosmos Verlag, Stuttgart 1990, ISBN 3-89350-819-8 , p. 39 ff .