Baden VII c
| VII c DR series 53 85 |
|
|---|---|
| Numbering: | No. 512-515 DR 53 8587, 53 8597, 53 8598 |
| Number: | 4th |
| Manufacturer: | MBG Karlsruhe |
| Year of construction (s): | 1891 |
| Retirement: | until 1929 |
| Type : | C n2 |
| Genre : | G 33.13 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 14,832 mm |
| Height: | 4,150 mm |
| Total wheelbase: | 3,450 mm |
| Wheelbase with tender: | 11,250 mm |
| Empty mass: | 35.55 t |
| Service mass: | 40.20 t |
| Friction mass: | 40.20 t |
| Wheel set mass : | 13.40 t |
| Top speed: | 45 km / h |
| Coupling wheel diameter: | 1,262 mm |
| Control type : | Stephenson |
| Cylinder diameter: | 500 mm |
| Piston stroke: | 635 mm |
| Boiler : | Belpaire |
| Boiler overpressure: | 10.0 bar |
| Number of heating pipes: | 183 |
| Heating pipe length: | 4,400 mm |
| Grate area: | 1.47 m³ |
| Radiant heating surface: | 7.50 m³ |
| Tubular heating surface: | 116.36 m³ |
| Evaporation heating surface: | 123.86 m³ |
| Tender: | bath. 3 T 13.5 |
| Locomotive brake: | Screw brake on the tender |
The machines of type VII c were triple- coupled freight train steam locomotives of the Grand Ducal Baden State Railway .
history
The locomotives were a further development of the Badische VII a class and the last wet steam freight locomotives with simple steam expansion. In order to achieve a higher output, the grate area was enlarged and the boiler pressure increased to 10 bar. The improved boiler also made it necessary to adapt the engine by increasing the diameter and stroke. The coupling wheels were also enlarged.
Like the locomotives of class VII a, the locomotives were used as shunting locomotives for a while after their use as freight locomotives. In 1914 all four machines were still in service. The locomotive no. 512 was given in 1919 as a reparation payment, but came back the following year and was recorded in the Deutsche Reichsbahn's redesignation plan as VII a under the wrong company number 53 8587.
Constructive features
The locomotives had a sheet metal frame made of continuous sheet metal 24 to 36 mm thick. The boiler was of the Belpaire type and had a steam dome on the front section of the boiler. The external two-cylinder wet steam engine had an internal control and acted on the central axis. The reversal was carried out using a lever. The first and second axles were connected by a balance lever and supported on the frame with a leaf spring. The rear axle was cushioned by means of an elliptically arranged pair of leaf springs. The locomotives were usually coupled with the 3 T 13.5 tender.
literature
- Hermann Lohr, Georg Thielmann: Baden locomotive archive. transpress, Berlin 1988, ISBN 3-344-00210-4
- Manfred Weisbrod, Hans Müller, Wolfgang Petznick: German Locomotive Archive: Steam Locomotives 2 (Series 41 - 59). transpress, Berlin 1994 ISBN 3-344-70840-6