- Mecklenburg III
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Mecklenburg III 
Numbering: 12–23 24–30 Quantity: 12 7 Manufacturer: Hartmann, Chemnitz Years of manufacture: 1864+1866 1869 Retired: 1901–1910 1903–1910 Wheel arrangement: 2-4-0 Axle arrangement: 1B n2 Rail gauge: 1435 mm Length over buffers: 13,750 mm Height: 4125 mm Overall wheelbase: 4395 mm Wheelbase including tender: 9989 mm Unladen weight: 31.30 t Service weight: 33.90 t Adhesive weight: 22.80 t Axle load: 11.40 t Top speed: 90 km/h Coupled wheel diameter: 1870 mm Carrying wheel diameter: 1065 mm Valve gear: Stephenson No. of cylinders: 2 Cylinder bore: 407 mm Piston stroke: 560 mm Boiler overpressure: 7.31 bar
8.04 bar [1]8.77 bar No. of heating tubes: 188 Heating tube length: 3111 mm 3311 mm Grate area: 1.25 m² Radiative heating area: 7.78 m² Heating tube area: 71.64 m² 77.62 m² Evaporative heating area: 79.42 m² 84.40 m² Brake Schleifer compressed air brake - ^ 1866 locomotives
The Grand Duchy of Mecklenburg Friedrich-Franz Railway grouped early, 2-4-0, passenger train locomotives from the Friedrich-Franz Railway into its Class III.
Contents
History
When the Güstrow-Neubrandenburg line went into service, it was essential that locomotives were procured that could cope with the inclines in Mecklenburg Switzerland without difficulty. The existing 2-2-2 locomotives of what later became classes I and II were not powerful enough.
To that end the Friedrich-Franz Railway bought 19 2-4-0 locomotives from Richard Hartmann in Chemnitz in 3 batches in the years 1864, 1866 and 1869. The locomotives were named after north German towns. Two engines were given the names ZWEI HUNDERT ("two hundred") and VIER HUNDERT ("four hundred") based on their factory numbers. The locomotives remained in service until after the turn of the century and were retired between 1903 and 1911.
Technical description
The locomotives had an inside forked frame. The boiler barrel had three shells. On the centre one there was a large steam dome, which was as tall as the short cylindrical smokestack. The steam dome was decorated with brass bands. The vertical boiler had a safety valve on top.
The twin-cylinder wet steam engine was on the outside. The steam chests and the Stephenson valve gear were on the inside. The cylinders, which were set horizontally, drove the first coupled axle.
The coupled axles were sprung using leaf springs above the axles. A compensating lever level with the axle boxes linked the two springs. On the final batch of 1869 the springs were located underneath the axle boxes of the coupled wheels. On the carrying axle the springs were above the frame.
The locomotives had a Schleifer compressed air brake. The sandboxes were in front of the first driving axle and sanded the wheels from in front.
The engines were equipped with tenders of class 3T 7.9.
See also
References
Sources
- Hans-Joachim Kirsche, Hermann Lohr, Georg Thielmann: Lokomotiv-Archiv Mecklenburg/Oldenburg. transpress, Berlin 14 November 2011, ISBN 3-344-00326-7.
External links
- There is a relevant English-language forum at Railways of Germany
Classes of Mecklenburg locomotive Early locomotives 
Passenger train locomotives Mecklenburg III · Mecklenburg IV · Mecklenburg P 2 · Mecklenburg P 3.1 · Mecklenburg P 3 · Mecklenburg P 4.1 · Mecklenburg P 4.2 · Mecklenburg P 8Goods train locomotives Mecklenburg G 2 · Mecklenburg G 3 · Mecklenburg G 4.2 · Mecklenburg G 5.2 · Mecklenburg G 5.4 · Mecklenburg G 7.2 · Mecklenburg G 7.3 · Mecklenburg G 8.1Tank locomotives Mecklenburg XI · Mecklenburg XII · Mecklenburg XIII · Mecklenburg XIIV · Mecklenburg T 3a · Mecklenburg T 3b · Mecklenburg T 4 · Mecklenburg T 9.2 · Mecklenburg T 9.3Narrow gauge locomotives Categories:- 2-4-0 locomotives
- Grand Duchy of Mecklenburg Friedrich-Franz Railway locomotives
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