BBÖ 729
| BBÖ 729, DR class 78.6 ÖBB 78 |
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 ÖGEG 78.618 in the Mikulov train station
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| Numbering: | BBÖ 729.01–16 DRB 78 601–626 ÖBB 78.601–626 |
| Number: | 26th |
| Year of construction (s): | 1931-1938 |
| Retirement: | 1973 |
| Type : | 2'C2 'h2t |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 14,990 mm |
| Height: | 4,530 mm |
| Width: | 3,060 mm |
| Fixed wheelbase: | 3,600 mm |
| Total wheelbase: | 11,880 mm |
| Service mass: | 108.4 / 113.1 t |
| Friction mass: | 48.2 / 50.4 t |
| Wheel set mass : | 16 t |
| Top speed: | 95/105 km / h |
| Indexed performance : | 1,325 kW |
| Driving wheel diameter: | 1,614 mm |
| Impeller diameter front: | 1,034 mm |
| Rear wheel diameter: | 1,034 mm |
| Cylinder diameter: | 500 mm |
| Piston stroke: | 720 mm |
| Boiler overpressure: | 13 |
| Number of heating pipes: | 156/154 |
| Number of smoke tubes: | 22nd |
| Grate area: | 3.55 m² |
| Radiant heating surface: | 12.00 / 13.50 m² |
| Superheater area : | 42.3 m² |
| Evaporation heating surface: | 171.8 / 172.3 m² |
| Water supply: | 16.8 m³ |
| Fuel supply: | 6.0 tons of coal |
The BBÖ 729 was an Austrian express - Tender Locomotive series .
history
After the First World War , the BBÖ wanted to save the fees for turning the locomotives on foreign turntables for transport to border countries and therefore used tank locomotives for express trains. However, the 629 series was too weak for these missions and their stocks were too small, so that they had to be supplemented abroad at great expense.
To remedy this, the head of the BBÖ construction department, Alexander Lehner , designed a corresponding 2'C2 ' tank locomotive series 729 together with the locomotive factory Floridsdorf , with the boiler from series 109 of the southern railway (BBÖ 209) and bogie, wheels , Drive and control linkages came from the 629 series . The machines had Lentz valve control and Heinl mixer preheaters.
Six more were delivered in 1931 and four more in 1932. In 1936, six copies with Nicholson water chambers were reordered, the changed dimensions of which are shown in the table. The BBÖ not only used the locomotives on the originally planned border routes, they also hauled light express trains on the 300 km long western line between Salzburg or Linz and Vienna , such as the Orient Express , the Arlberg-Orient Express and the Ostend -Wien-Express . A new reorder comprising ten pieces has already been delivered to the Deutsche Reichsbahn , which classified the machines as the 78.6 .
The series survived the Second World War without losses and was designated series 78 by the ÖBB . Equipped with a Giesl ejector and boiler pipe throttling, they were in use until 1973.
Preserved copies
The 78,606 is owned by the Austrian Railway Museum . After several years as a memorial in Amstetten, it was transferred to the Strasshof Railway Museum in summer 2012 .
78.618 was acquired in 1976 by the Austrian Society for Railway History (ÖGEG) as its first standard-gauge steam locomotive and, in the years up to 1986, was made operational by association members on a voluntary basis. After another general inspection in 2008, it was ready for operation in the Ampflwang locomotive park. Since a serious engine failure in March 2019, it can be viewed there as a partially dismantled exhibit. A renewed commissioning is not foreseeable for the time being. The 78.625 was also purchased as a spare part donor, but this machine is only preserved in fragments.
literature
- Adolph Giesl-Gieslingen : The era after Gölsdorf. Slezak-Verlag, Vienna 1981, ISBN 3-900134-37-5
- Heribert Schröpfer: Locomotives for Austrian railways - steam locomotives BBÖ and ÖBB. alba, Düsseldorf 1989, ISBN 3-87094-110-3
Web links
Individual evidence
- ^ Albert Mühl: International luxury trains . EK-Verlag, Freiburg im Breisgau 1991, ISBN 3-88255-673-0 , p. 118