| Bavarian D VI DRG Class 98.75 |
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|---|---|
| Number(s): | DRG 98 7501–7526 |
| Quantity: | 53 |
| Manufacturer: | Krauss, Maffei |
| Year(s) of manufacture: | 1880–1894 |
| Retired: | 1964 |
| Wheel arrangement: | 0-4-0 |
| Axle arrangement: | B n2t |
| Type: | L 22.9 |
| Gauge: | 1,435 mm |
| Length over buffers: | 6,860/6,910 mm |
| Service weight: | 18.5/19.6 t |
| Adhesive weight: | 18.5/19.6 t |
| Axle load: | 9.3/9.8 t |
| Top speed: | 45 km/h |
| Driving wheel diameter: | 1,006 mm |
| No. of cylinders: | 2 |
| Cylinder bore: | 266 mm |
| Piston stroke: | 508 mm |
| Boiler Overpressure: | 12 bar |
| Grate area: | 0.75 m² |
| Evaporative heating area: | 25.71/28.50 m² |
| Water capacity: | 1.8/2.3 m³ |
| Fuel: | 0.5/0.8 t coal |
| Locomotive brakes: | Hardy vacuum brakes, some with compressed-air brakes |
The Bavarian Class D VI were German 0-4-0 steam locomotives of the Royal Bavarian State Railways (Königlich Bayerische Staatsbahn). Maffei supplied the first 30 locomotives from 1880 to 1883, and Krauss delivered a further 23 up to 1894.
For the first time on Bavarian locomotives, running plates and Hardy vacuum brakes were installed on these saturated-steam engines. Several examples had gangways as well. An unusual feature was the location of the sandbox under the running plate between the coupled axles. They had slide valves on top and outside Stephenson link motion.[1]
The first 44 locomotives had no side tanks. Water was stored in a well tank, and coal in the driver's cab. The last nine locomotives on the other hand had short tanks on either side, in front of the driver's cab. That increased water capacity from 1.8 to 2.3 m² and coal capacity from 0.5 to 0.8 t.
In the 1920s, several D VI's were on duty in the Palatinate (Pfalz) as pontoon locomotives at Speyer and Maximiliansau.
In 1925 the Deutsche Reichsbahn-Gesellschaft took over 26 vehicles as DRG Class 98.75 (Baureihe 98.75), five of which had side tanks. They were retired by the end of the 1920s and some were sold on as industrial locomotives.
The final duties of former locomotive number 83 Berg (98 7508) were in a peat factory in Raubling, where it was not taken out of service until 1964. This locomotive is being made operational again by the German Railway History Company (Deutsche Gesellschaft für Eisenbahngeschichte e. V. or DGEG).
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