MPSB No. 10 to 12 (2nd occupation)
| MPSB No. 10 II to 12 II | |
|---|---|
| Numbering: | MPSB: 10 II to 12 II DR: 99 3462 |
| Number: | 3 |
| Manufacturer: | Orenstein & Koppel |
| Year of construction (s): | 1930, 1934 |
| Retirement: | until 1970 |
| Type : | D h2 |
| Genre : | G 44.4 |
| Gauge : | 600 mm |
| Length over buffers: | 10,325 mm |
| Height: | 2885 mm |
| Total wheelbase: | 2400 mm |
| Wheelbase with tender: | 6825 mm |
| Empty mass: | 15.5 t |
| Service mass: | 16.5 t |
| Wheel set mass : | 4.5 t |
| Top speed: | 25 km / h |
| Indexed performance : | 200 PSi / 147 kW |
| Coupling wheel diameter: | 650 mm |
| Control type : | Heusinger |
| Number of cylinders: | 2 |
| Cylinder diameter: | 310 mm |
| Piston stroke: | 300 mm |
| Boiler overpressure: | 14 bar |
| Grate area: | 0.75 m² |
| Radiant heating surface: | 3.2 m² |
| Tubular heating surface: | 23.9 m² |
| Superheater area : | 11.25 m² |
| Evaporation heating surface: | 27.1 m² |
| Tender: | 2 T 3.5 |
| Water supply: | 3.5 m³ |
| Fuel supply: | 1.5 tons of coal |
The locomotives No. 10 II to 12 II of the Mecklenburg-Pomerania Narrow Gauge Railway (MPSB) were four-axle superheated steam locomotives . Locomotive 12 II was taken over by the Deutsche Reichsbahn on April 1, 1949 and designated as 99 3462 .
history
To renew the vehicle fleet, the Mecklenburg-Pomerania narrow-gauge railway acquired three quadruple-coupled superheated steam locomotives from Orenstein & Koppel from 1930. Orenstein and Koppel delivered similar locomotives to Africa, among others. The locomotives were given road numbers 10 to 12 in a second occupation. The machines proved themselves in use. The MPSB therefore ordered two more, but slightly lighter, locomotives in 1937/1938. These received the numbers 13 and 14 in a second occupation.
In 1945, the locomotives 10 II and 11 II had to be given to the Soviet Union as reparations .
When the MPSB was taken over by the Deutsche Reichsbahn, the remaining locomotive No. 12 II was given the new road number 99 3462. The locomotive was in use on the Friedland – Anklam line until it was shut down. In November 1971 the machine was sold to the Vale of Rheidol Railway in Wales. In December 1978 the entrepreneur Walter Seidensticker acquired the locomotive and used it on the Mühlenstroth small steam train under the name MECKLENBURG . The superheater was removed to simplify maintenance. The locomotive has been at home with the Muskau Forest Railway since October 2012 and was restored on site to a historically correct appearance. Since then, the operational machine has also been used again under its historical company number 99 3462.
Constructive features
The locomotives had an outer frame made of sheet metal. The wheel sets were cushioned with overhead leaf springs. The two front and the two rear spring assemblies were each connected with a compensating lever. Circumferential cam disks hinged on the outside of the drive and coupling pins served as mass compensation.
The steam dome with the two flanged pop safety valves was located in the middle of the boiler. The valve regulator was of the Schmidt & Wagner type. The external superheated steam engines worked on the third wheel set. The Heusinger control had hanging iron.
The round sandpit was arranged behind the steam dome. The hand-operated sand spreader sanded the first and fourth wheel sets from the front. The Latowski design was located behind the chimney. The Reichsbahn later added a turbo generator for electrical lighting.
The long driver's cab had a hinged door, a tender bridge and a fan attachment on each side. The box tender had an outer frame.
literature
- Manfred Weisbrod, Hans Wiegard, Hans Müller, Wolfgang Petznick: German Locomotive Archive: Steam Locomotives 4 (Class 99) . transpress, Berlin 1995, ISBN 3-344-70903-8 .
- Klaus Kieper, Reiner Preuß : Narrow gauge between the Baltic Sea and the Ore Mountains , Alba Buchverlag, Düsseldorf 1980. ISBN 3-87094-069-7
footnote
- ^ Date of nationalization of almost all private railways in the GDR