Oldenburg T 5.1
| Oldenburg T 5.1 DR class 71.4 |
|
|---|---|
| Numbering: | DR 71 401-420 |
| Number: | 20th |
| Manufacturer: | Hanomag |
| Year of construction (s): | 1907-1921 |
| Retirement: | 1930 |
| Axis formula : | 1'B1 ' |
| Type : | 1'B1 'n2t |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 11,685 mm |
| Total wheelbase: | 6,800 / 7,000 * mm |
| Empty mass: | 41.50 t |
| Service mass: | 53.10 t |
| Friction mass: | 30.00 t |
| Wheel set mass : | 15.0 t |
| Top speed: | 75 km / h |
| Driving wheel diameter: | 1,600 mm |
| Impeller diameter front: | 1,000 mm |
| Rear wheel diameter: | 1,000 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 430 mm |
| Piston stroke: | 600 |
| Boiler overpressure: | 12 bar |
| Grate area: | 156 m² |
| Evaporation heating surface: | 100.68 m² |
| * from 1911 | |
The steam locomotives of the class T 5.1 of the Oldenburg State Railroad were tank locomotives for use in passenger train service. They were designed on the model of the Prussian T 5.1 . Like their Prussian sisters, they had a rough run at higher speeds. For this reason, constructive changes were made to the drive during the course of delivery, such as the extension of the overall axle base. But even these measures were unsuccessful. The Hanomag company produced a total of 20 copies of the Oldenburg T 5.1 in the years 1907–1921.
In 1925 the Deutsche Reichsbahn took over all 20 locomotives as the 71.4 series and gave them the numbers 71 401 to 71 420. They were retired by 1930.
literature
Lothar Spielhoff: Länderbahn steam locomotives. Volume 1: Prussia, Mecklenburg, Oldenburg, Saxony and Alsace-Lorraine . Franckh'sche Verlagshandlung, Stuttgart 1990, ISBN 3-440-06145-0 .