| Oldenburg P 4.2 DRG Class 36.12 |
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|---|---|
| Number(s): | DRG 36 1251 - 1258 |
| Quantity: | 8 |
| Manufacturer: | Hanomag |
| Year(s) of manufacture: | 1907 - 1909 |
| Retired: | 1929 |
| Wheel arrangement: | 4-4-0 |
| Axle arrangement: | 2'B n2v |
| Gauge: | 1,435 mm |
| Length over buffers: | 17,461 mm |
| Service weight: | 52.2 t |
| Adhesive weight: | 30.2 t |
| Axle load: | 15.1 t |
| Top speed: | 90 km/h |
| Indicated Power: | 427 kW |
| Driving wheel diameter: | 1,750 mm |
| Leading wheel diameter: | 1,000 mm |
| No. of cylinders: | 2 |
| Cylinder bore: | 460/680 mm |
| Piston stroke: | 600 mm |
| Grate area: | 2.27 m² |
| Evaporative heating area: | 119.35 m² |
| Tender: | pr 3 T 12 and 2'2' T 20 |
| Water capacity: | 16.0 m³ |
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.
Spielhoff, Lothar, Länderbahn-Dampf-Lokomotiven. Band 1: Preußen, Mecklenburg, Oldenburg, Sachsen und Elsaß-Lothringen, Franckh'sche Verlagshandlung, Stuttgart, 1990, ISBN 3-440-06145-0
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