Mecklenburg P 4.2

The Mecklenburg Class P 4.2, formerly Class VII, were early German steam locomotives operated by the Grand Duchy of Mecklenburg Friedrich-Franz Railway and were used specifically for hauling express trains on the line from Warnemünde to Berlin. They were mechanically identical with the Prussian P 4.2. All 31 units were taken over by the Deutsche Reichsbahn who incorporated them as Class 36.6 with numbers 36 602–620 and 651–662. The first series of numbers were engines with a 14 t axle load, the second those with a 15 t axle load. In 1931 the last locomotive of this class was retired.

Mecklenburg P 4.2
DRG Class 36.6
Number(s)DRG 36 602 - 620, 651 - 662
Quantity31
Year(s) of manufacture1903–1912
Retired1931
Wheel arrangement4-4-0
Axle arrangement2'B n2v
Track gauge1,435 mm (4 ft 8 1⁄2 in)
Length over buffers17,645 mm (57 ft 10.7 in)
Service weight50.4 t
Adhesive weight19.6 t
Axle load14.9 t
Top speed90 km/h (56 mph)
Indicated Power427 kW
Driving wheel diameter1,750 mm (5 ft 9 in)
Leading wheel diameter1,000 mm (3 ft 3 in)
No. of cylinders2
Cylinder bore460 mm (18 in)/680 mm (27 in)
Piston stroke600 mm (24 in)
Grate area2.31 m2 (24.9 sq ft)
Evaporative heating area118.85 m2 (1,279.3 sq ft)
Tenderpr 3 T 12/
pr 2'2' T 16
Water capacity12.0 m3 (2,600 imp gal)/16.0 m3 (3,500 imp gal)

No. 36 601 was a Prussian P 4.2 that was redeployed to Mecklenburg in 1920.

Apart from three units, these engines were equipped with Class 2'2' T 16 tenders.

Sources
  • Spielhoff, Lothar (1990). Länderbahn-Dampf-Lokomotiven. Band 1: Preußen, Mecklenburg, Oldenburg, Sachsen und Elsaß-Lothringen (in German). Stuttgart: Franckh'sche Verlagshandlung. ISBN 3-440-06145-0.
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