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Oldenburg P 4.2

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Oldenburg P 4.2
DRG Class 36.12
Locomotive 190 Neptun (Hanomag 5410 of 1909)
Type and origin
BuilderHanomag
Build date1907–1909
Total produced8
Specifications
Configuration:
 • Whyte4-4-0
Gauge1,435 mm (4 ft 8+12 in)
Leading dia.1,000 mm (39+38 in)
Driver dia.1,750 mm (68+78 in)
Length:
 • Over beams17,461 mm (57 ft 3+12 in)
Axle load15.1 t (14.9 long tons; 16.6 short tons)
Adhesive weight30.2 t (29.7 long tons; 33.3 short tons)
Service weight52.2 t (51.4 long tons; 57.5 short tons)
Water cap.16.0 m3 (3,500 imp gal; 4,200 US gal)
Heating surface:
 • Firebox2.27 m2 (24.4 sq ft)
 • Evaporative119.35 m2 (1,284.7 sq ft)
Cylinders2
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 power427 kW (581 PS; 573 hp)
Career
Numbers
  • GOE: 174–178, 188–190
  • DRG: 36 1251 - 36 1258
Retired1929

The Oldenburg Class P 4.2 steam locomotives were German engines built for the Grand Duchy of Oldenburg State Railways (Großherzoglich Oldenburgische Staatseisenbahnen) between 1907 and 1909. They were based on the standard variant of the Prussian P 4.2, but there were a number of small differences such as a Ranafier steam dryer and, on three examples, a Lentz valve gear, a system widely used in Oldenburg. Production began in 1907 and eight engines were procured up to 1909.

The engines taken over by the Deutsche Reichsbahn were grouped as DRG Class 36.12 given numbers 36 1251 to 36 1258.

The locomotives used tenders of the 3 T 12 or 2'2' T 20 classes.

See also

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Sources

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  • 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.