DR series 98.11
| DR series 98 11 | |
|---|---|
| Numbering: | 98 1101-1129 |
| Number: | 29 |
| Manufacturer: | Raw pastures (remodeling) |
| Year of construction (s): | 1934-1941 |
| Retirement: | 1960-1968 |
| Type : | 1'D h2t |
| Genre : | Gt 45.12 |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over buffers: | 10,200 mm |
| Smallest bef. Radius: | 100 m |
| Empty mass: | 40.5 t |
| Service mass: | 50.7 t |
| Friction mass: | 42.5 t |
| Wheel set mass : | 11.6 t |
| Top speed: | 55 km / h |
| Indexed performance : | 331 kW / 450 PSi |
| Starting tractive effort: | ~ 101 kN |
| Driving wheel diameter: | 1,006 mm |
| Impeller diameter front: | 800 mm |
| Number of cylinders: | 2 |
| Cylinder diameter: | 460 mm |
| Piston stroke: | 508 mm |
| Boiler overpressure: | 12 bar |
| Number of heating pipes: | 89 |
| Number of smoke tubes: | 12 |
| Heating pipe length: | 3500 mm |
| Grate area: | 1.36 m² |
| Radiant heating surface: | 5.85 m² |
| Tubular heating surface: | 55.14 m² |
| Superheater area : | 18.93 m² |
| Evaporation heating surface: | 60.99 m² |
| Water supply: | 5.1 m³ |
| Fuel supply: | 2.6 t |
| Brake: | Air brake |
| Train heating: | steam |
The locomotives of the class 98 11 of the Deutsche Reichsbahn were conversions of the Bavarian class GtL 4/4 (class 98 8-9 ).
Since the running characteristics of the 98 10 series were not yet sufficient to significantly increase the speed of local trains in Bavaria, the Reichsbahn decided in 1934 to convert a GtL 4/4 locomotive (the 98 906). Among other things, it received an additional front running axle. For this, the boiler and driver's cab had to be moved forward, which required a height of 250 mm.
After the tests with the vehicle were successful, it was decided to modify a further 26 machines by 1939, and then put them into a new series. Another copy followed in 1940 and 1941. The conversions were given the numbers 98 1101–1129.
The maximum permissible speed of the conversions could be increased to 55 km / h, compared to 40 km / h for the GtL 4/4 and 45 km / h for the 98 10 series .
All 29 locomotives survived the Second World War . Except for the locomotive 98 1108, which came to the Deutsche Reichsbahn , all remained with the Deutsche Bundesbahn . The vehicle in the GDR was retired in 1967; the machines in the west between 1960 and 1968.
literature
- Horst J. Obermayer: Steam locomotives - standard gauge . In: German Railways . Weltbild Verlag, Augsburg 1995, ISBN 3-89350-819-8 , p. 247 .
