Oldenburg P 4.1
DRG Class 36.12
Type and origin
BuilderHanomag
Build date1896–1902
Total produced19
Specifications
Configuration:
  Whyte4-4-0
  GermanP 24.14
Gauge1,435 mm (4 ft 8+12 in)
Leading dia.1,000 mm (3 ft 3+38 in)
Driver dia.1,750 mm (5 ft 8+78 in)
Wheelbase:
  Overall6,300 mm (20 ft 8 in)
  incl. tender12,075 mm (39 ft 7+12 in)
Length:
  Over beams15,263 mm (50 ft 1 in)
Height4,225 mm (13 ft 10+38 in)
Axle load13.7 t (13.5 long tons; 15.1 short tons)
Adhesive weight27.4 t (27.0 long tons; 30.2 short tons)
Empty weight40.0 t (39.4 long tons; 44.1 short tons)
Service weight45.2 t (44.5 long tons; 49.8 short tons)
Fuel capacity4 t (8,800 lb) coal
Water cap.12 m3 (2,600 imp gal; 3,200 US gal)
Boiler:
No. of heating tubes248
Heating tube length3,650 mm (11 ft 11+34 in)
Boiler pressure12 kgf/cm2 (1,180 kPa; 171 lbf/in2)
Heating surface:
  Tubes110.75 m2 (1,192.1 sq ft)
  Firebox1.92 m2 (20.7 sq ft)
  Radiative8.72 m2 (93.9 sq ft)
  Evaporative119.47 m2 (1,286.0 sq ft)
Cylinders2
Cylinder size460 mm (18+18 in)
Piston stroke600 mm (23+58 in)
Valve gearWalschaerts (Heusinger )
Performance figures
Maximum speed90 km/h (56 mph)
Career
Numbers
  • GOE: 107–111, 116, 129–134, 139–144, 150
  • DRG: 36 1201 – 36 1219
Retired1925–1931

The steam locomotives of Oldenburg Class P 4.1 (later DRG Class 36.12) were German locomotives built for the Grand Duchy of Oldenburg State Railways (Großherzoglich Oldenburgische Staatseisenbahnen) between 1896 and 1902. They were based on a Prussian P 4.1 prototype and a total of 19 engines were procured up to 1902. Overall the Oldenburg engine was less powerful than its Prussian counterpart, because the grate area was smaller and the steam dome was omitted. The regulators was housed in the smokebox. The Deutsche Reichsbahn took them over in 1920 and allocated them numbers 36 1201 to 36 1219. They were retired in the 1930s.

They were coupled with tenders of class 3 T 12.

See also

References

    • 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.
    • Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1976). Dampflokomotiven deutscher Eisenbahnen, Baureihe 01–39 (EFA 1.1) (in German) (3rd ed.). Düsseldorf: Alba Buchverlag. pp. 213–215. ISBN 3-87094-081-6.


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