Mecklenburg P 4.2

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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 VII
Mecklenburg P 4.2
DRG Class 36.6
Prussian P 4.2 in Wetter an der Ruhr.
Type and origin
Builder
Build date1903–1912
Total produced31
Specifications
Configuration:
 • Whyte4-4-0
Gauge1,435 mm (4 ft 8+12 in)
Leading dia.1,000 mm (3 ft 3+14 in)
Driver dia.1,750 mm (5 ft 9 in)
Length:
 • Over beams17,645 mm (57 ft 10+34 in)
Axle load14.9 tonnes (14.7 long tons; 16.4 short tons)
Adhesive weight19.6 tonnes (19.3 long tons; 21.6 short tons)
Service weight50.4 tonnes (49.6 long tons; 55.6 short tons)
Water cap.12.0 or 16.0 m3 (2,600 or 3,500 imp gal; 3,200 or 4,200 US gal)
Heating surface:
 • Firebox2.31 m2 (24.9 sq ft)
 • Evaporative118.85 m2 (1,279.3 sq ft)
Cylinders2, compound
High-pressure cylinder460 mm (18+18 in)
Low-pressure cylinder680 mm (26+34 in)
Piston stroke600 mm (23+58 in)
Performance figures
Maximum speed90 km/h (56 mph)
Indicated power580 PS (427 kW; 572 hp)
Career
Numbers
  • MFFE: 201–231
  • DRG: 36 602 – 36 620, 36 651 – 36 662
Retiredby 1931

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.

References

edit
  • 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.[page needed]
  • Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1976). Dampflokomotiven deutscher Eisenbahnen, Baureihe 01–39 (EFA 1.1) (in German) (3rd ed.). Düsseldorf: Alba Buchverlag. pp. 203–205. ISBN 3-87094-081-6.