Bavarian AA I
| AA I, after conversion P 2/4 (Bavaria) DR class 36.8 |
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| Numbering: | 1400 DR 36 861 |
| Number: | 1 |
| Manufacturer: | Krauss |
| Year of construction (s): | 1896 |
| Retirement: | 1933 |
| Type : | 2'aA1 n2v, after conversion 2'B h2 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 16,570 mm |
| Service mass: | 51.7 t |
| Friction mass: | 29.8 t |
| Wheel set mass : | 14.9 t |
| Top speed: | 90 km / h |
| Driving wheel diameter: | 1,870 mm |
| Impeller diameter front: | 1,006 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 490 mm |
| Piston stroke: | 610 mm |
| Boiler overpressure: | 13 bar |
| Grate area: | 2.26 m² |
| Superheater area : | 26.85 m² |
| Evaporation heating surface: | 94.60 m² |
| Tender: | bay 3 T 14.5 |
| Water supply: | 14.5 m³ |
The AA I was a steam locomotive of the Royal Bavarian State Railways . The unique piece was made by Krauss & Comp. built in the years 1895 to 1896. It was designed by the chief designer Richard von Helmholtz .
The machine largely corresponded to the Bavarian B XI , but the drive and running gear had been modified. The second coupling axle was replaced by a fixed running axle and a preloading axle was attached between the bogie and the driving axle. This could be lowered by a pressure cylinder and was driven by an auxiliary machine with two cylinders. Despite the higher maintenance requirements, it was economical due to the lower steam consumption. The locomotive was based in the Munich workshop and was used, among other things, before the Orient Express between Munich and Simbach .
In 1907 the locomotive was converted into a 2'B h2 after an accident and redrawn as P 2/4 . From 1908 she was stationed in the Simbach workshop . The Deutsche Reichsbahn took over the locomotive under road number 36 861. In 1928/29 it was relocated to the Mühldorf depot and was not retired until 1933 as the last Bavarian 2'B locomotive.
The vehicle was equipped with a Schlepptender equipped bay of the type 3 T 14.5.
literature
- Horst J. Obermayer: Steam locomotives . In: German Railways . Franckh-Kosmos Verlag, Stuttgart 1990, ISBN 3-89350-819-8 , p. 87 .
Individual evidence
- ^ Karl Bürger: Munich – Mühldorf – Simbach. Glory, decline and renaissance of a royal Bavarian railway. An eventful traffic history with a revolutionary future . Self-published, Walpertskirchen 2017, ISBN 978-3-00-056474-1 , p. 73 .
- ↑ Reinhard Wanka, Wolfgang Wiesner: The main line Munich-Simbach and its branch lines . Bufe-Fachbuch-Verlag, Egglham 1996, ISBN 3-922138-59-4 , p. 93, 109 .