O&K MV 6a / MV 6b - O&K MV 6a / MV 6b

O&K MV 6a / MV 6b
Museum locomotive of the Wupperschiene Friends' Association, Radevormwald-Dahlhausen
Museum locomotive of the Wupperschiene Friends' Association,
Radevormwald-Dahlhausen
Numbering: AND NO. 8
Westfalenhütte Nr. 51–56
and others
Number: MV 6a: 21
MV 6b: 77
Manufacturer: O&K
Year of construction (s): 1953–1968
Type : B dh
Gauge : 1435 mm (Normalspur)
Length over buffers: 6.500 mm
Long: 5.200 mm
Height: 3.120 mm
Width: 2.800 mm
Total wheelbase: 2.500 mm
Service mass: 24.000 kg
Friction mass: 24.000 kg
Wheel set mass : 12.000 kg
Top speed: 25 km / h
Installed capacity: originally 106.7 kW (145 PS)
after conversion 125 kW (170 PS)
Motorentyp: Originally O&K MV 6b
after conversion DB OM 402
Engine type: Six-cylinder four-stroke diesel
Lokbremse: Indirect brake type Knorr

The O&K MV 6a / MV 6b series are two-axle diesel locomotives with hydraulic power transmission , almost 100 of which were produced by the manufacturer Orenstein & Koppel for light shunting between 1953 and 1968. Some locomotives are still available as of 2020.

story

After a first post-war type program was created at Orenstein & Koppel in 1950, [1] a revised program of the second post-war generation soon followed. The designation of the locomotives contained the type of power generation, the power transmission, about 1/20 of the engine power and a code letter. [2] In the above series MV 6a / 6b mean M = Motor locomotive V = type of power transmission chain transmit 6 the power class of the diesel engine, about 120 horsepower, and a and b the engine variants.

The locomotives were designed for shunting tasks in which small locomotives with an output of 55 hp were no longer sufficient. Of the locomotives with both engine variants, 98 copies were produced, which were mainly delivered to private companies. The formed

Several locomotives were delivered to Italy and the Netherlands . [3]

Constructive features

The two-axle shunting locomotives have a front end for the machinery and an end driver's cab. After several conversions, there is no longer any external distinction to be seen between the MV 6a and the MV 6b . There are differences between straight and inclined stems, rounded and sharp stem corners and headlights placed on the buffer beam or integrated in the stem. The locomotives of the Westfalenhütte were often coupled to the driver's cab during operation [4] and therefore had a transition door with bellows in the front wall of the driver's cab. [5]

The locomotives were factory-fitted with a six-cylinder four-stroke diesel engine from Orenstein & Koppel and a fluid transmission from Voith . The reversing gear screwed to the fluid transmission was followed by the power drive of the locomotives via a chain wheel and roller chain on the two drive axles. Some locomotives were equipped with an indirect brake , the air reservoir was located behind the shunting step, which extends from the buffer beam to behind the front drive axle. [6]

commitment

Delmenhorst-Harpstedter Railway

The only locomotive in the series that was also in use on a private railway was delivered to the Mariaglück mining company near Celle in 1956 . It stayed there until 1970, after which it was used by Kali und Salz AG in the same location. In 1976 she moved to the Guano works in Nordenham , in 1988 to the Delmenhorst-Harpstedter Eisenbahnfreunde , where she received the number 1 . A year later, the machine moved to the Delmenhorst-Harpstedter Eisenbahn , which it designated with the number 8 . The locomotive was maneuvered here for the company Moderne Bauelementebetween Heiligenrode and Groß Mackenstedt . [7]

In 1990 the engine suffered an engine failure and a used six-cylinder four-stroke diesel engine from Daimler-Benz OM 402 with an output of 170 hp was installed as a replacement . [7] After a few years it was sold to the reserve locomotive and in 2004 to the Schweerbau GmbH company in Stadthagen . The locomotive was still there in 2009. [8]

Other preserved locomotives

The following companies, clubs or museums own type series locomotives:

Some vehicles are still in daily use in 2020, some were erected as memorials.

literature

  • Heusinkveld, Meyer, Wagner: The Delmenhorst-Harpstedter Railway . Verlag Kenning, Nordhorn 2001, ISBN 3-927587-93-1 , p. 272–274.

Weblinks

Commons : Orenstein & Koppel MV 6 - Collection of images, videos and audio files

Individual evidence

  1. Data sheet about O & K's first post-war program on www.rangierdiesel.de
  2. Data sheet about the second post-war program from O&K on www.rangierdiesel.de
  3. Data sheet about the locomotives O&K MV 6a / MV 6b on www.rangierdiesel.de
  4. Photo of a pair of locomotives O&K MV 6b from the Westfalenhütte on www.rangierdiesel.de
  5. Rear view of an O&K MV 6b from the Westfalenhütte on www.rangierdiesel.de
  6. ^ Photo of the Schweerbau locomotive on www.rangierdiesel.de
  7. a b Heusinkveld, Meyer, Wagner: The Delmenhorst-Harpstedter Railway . Verlag Kenning, Nordhorn 2001, ISBN 3-927587-93-1 , p. 272–274.
  8. Data sheet for the locomotive at www.rangierdiesel.de
  9. Data sheet for the locomotive in the Westphalian Industrial Museum at www.rangierdiesel.de
  10. Data sheet for the locomotive at the Franconian Museum Railway at www.rangierdiesel.de
  11. Data sheet for the locomotive from the Berlin Railway Friends at www.rangierdiesel.de
  12. Data sheet of the locomotive at the Oldtimermuseum Rügen on www.rangierdiesel.de
  13. Data sheet for the locomotive from the Wupperschiene development association at www.rangierdiesel.de
  14. Data sheet for the locomotive at the Rheinisches Industriebahn-Museum at www.rangierdiesel.de
  15. Data sheet for the locomotive from the Werra-Fulda-Bahn development association at www.rangierdiesel.de
  16. Data sheet of the locomotive from the Eisenbahnfreunde Mittelholstein on www.rangierdiesel.de
  17. Data sheet for the locomotive from the Selb-Rehau Model and Railway Club at www.rangierdiesel.de