DR series 99 07
|Year of construction (s):||1885-1900|
|Type :||C n2t|
|Genre :||K 33.6|
|Gauge :||1000 mm ( meter gauge )|
|Length over buffers:||6,100 mm|
|Total wheelbase:||1,800 mm|
|Empty mass:||12.72 t, 13.36 t *, 13.67 t **|
|Service mass:||16.30 t, 16.96 t *, 17.47 t **|
|Friction mass:||16.30 t, 16.96 t *, 17.47 t **|
|Top speed:||30 km / h|
|Indexed performance :||100 PSi|
|Driving wheel diameter:||800 mm|
|Control type :||Allan|
|Number of cylinders:||2|
|Cylinder diameter:||260 mm|
|Piston stroke:||400 mm|
|Boiler overpressure:||12 kgf / cm²
117.7 N / cm²
|Number of heating pipes:||105, 107 *|
|Heating pipe length:||2,200 mm|
|Grate area:||0.53 m²|
|Radiant heating surface:||2.63 m²|
|Tubular heating surface:||29.03 m², 29.58 m² * **|
|Evaporation heating surface:||31.66 m², 32.20 m² * **|
|Water supply:||1.77 m³ *|
|Fuel supply:||0.65 tons of coal|
|Locomotive brake:||Throw lever handbrake|
|Train brake:||Schmid'sche continuous brake *,
Hardy suction air brake **
Westinghouse air brake ***
|* No. III
** from No. IV
*** from 1908
The vehicles were made for the meter-gauge route between Eichstätt-Stadt and Eichstätt-Bahnhof . In 1885 the railway procured two copies, in 1892 a third. After the 5.2-kilometer route via Eichstätt was extended to 30 kilometers, two more machines were added in 1898 and 1900. The vehicles had the track numbers I – V. Since they were the only meter- gauge locomotives operated by the Bavarian State Railroad, they were not included in the classification scheme, but referred to as LE (Local Railway Eichstätt).
In 1925, the Deutsche Reichsbahn took over all five machines as class 99 07 with the numbers 99 071–99 075. The first two locomotives were retired in 1932, the other three in 1935, after the line had been completely converted to standard gauge.
The locomotives had a riveted sheet metal frame with a water tank. The short riveted long shell consisted of two shots. The steam dome, two spring balance safety valves and a sand dome, from where the first axis was sanded, sat on the boiler. The flat slide was operated by an Allan control, the cylinder was horizontal, the drive rod acted on the third axis. The engine of the first locomotives was also disguised because of road use; it was only dismantled around 1908. The coal containers were arranged in front of the driver's cab. The machines carried 1.77 m³ of water and 0.65 tons of coal . There was a hand chime on the roof and the locomotives had kerosene lighting.
After the conversion to the compressed air brake, the air pump was located in the front right next to the smoke chamber, and the air tanks were located on the right and left of the boiler. The silencer was attached to the chimney. A Riggenbach counter-pressure brake was also available.
- Ernst Hoecherl: Eichstätter Narrow Gauge Railway 1885–1934. Bufe-Fachbuch-Verlag, Egglham and Munich 1984, ISBN 3-922138-18-7 .
- Manfred Weisbrod, Hans Wiegard, Hans Müller, Wolfgang Petznick: German Locomotive Archive: Steam Locomotives 4 (Class 99) . transpress, Berlin 1995, ISBN 3-344-70903-8 , pp. 23-24, 241 .