Oldenburg P 4.1
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.
| Oldenburg P 4.1 DRG Class 36.12 | |
|---|---|
| Number(s) |
|
| Quantity | 19 |
| Manufacturer | Hanomag |
| Year(s) of manufacture | 1896–1902 |
| Retired | 1925–1931 |
| Wheel arrangement | 4-4-0 |
| Axle arrangement | 2′B n2 |
| Type | P 24.14 |
| Track gauge | 1,435 mm (4 ft 8 1⁄2 in) |
| Length over buffers | 15,263 mm (50 ft 1 in) |
| Height | 4,225 mm (13 ft 10 3⁄8 in) |
| Overall wheelbase | 6,300 mm (20 ft 8 in) |
| Wheelbase incl. tender | 12,075 mm (39 ft 7 1⁄2 in) |
| Empty weight | 40.0 t (39.4 long tons; 44.1 short tons) |
| Service weight | 45.2 t (44.5 long tons; 49.8 short tons) |
| Adhesive weight | 27.4 t (27.0 long tons; 30.2 short tons) |
| Axle load | 13.7 t (13.5 long tons; 15.1 short tons) |
| Top speed | 90 km/h (56 mph) |
| Driving wheel diameter | 1,750 mm (5 ft 8 7⁄8 in) |
| Leading wheel diameter | 1,000 mm (3 ft 3 3⁄8 in) |
| Valve gear | Walschaerts (Heusinger ) |
| No. of cylinders | 2 |
| Cylinder bore | 460 mm (18 1⁄8 in) |
| Piston stroke | 600 mm (23 5⁄8 in) |
| Boiler Overpressure | 12 kgf/cm2 (1,180 kPa; 171 lbf/in2) |
| No. of heating tubes | 248 |
| Heating tube length | 3,650 mm (11 ft 11 3⁄4 in) |
| Grate area | 1.92 m2 (20.7 sq ft) |
| Radiative heating area | 8.72 m2 (93.9 sq ft) |
| Tube heating area | 110.75 m2 (1,192.1 sq ft) |
| Evaporative heating area | 119.47 m2 (1,286.0 sq ft) |
| Water capacity | 12 m3 (2,600 imp gal; 3,200 US gal) |
| Fuel | 4 t (8,800 lb) coal |
| Locomotive brakes | Westinghouse air brake |
They were coupled with tenders of class 3 T 12.
See also
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.
| Early locomotives |
|  |
|---|---|---|
| Passenger and express train locomotives | ||
| Goods train locomotives | ||
| Tank locomotives | ||
| Narrow gauge locomotives and railbuses |
| |
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