Oldenburg T 5.1 - Misplaced Pages

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Oldenburg T 5.1
DRG Class 71.4

Type and origin
Builder	Hanomag
Build date	1907–1921
Total produced	20

Specifications
Configuration:
• Whyte	2-4-2T
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Leading dia.	1,000 mm (3 ft 3+3⁄8 in)
Driver dia.	1,600 mm (5 ft 3 in)
Trailing dia.	1,000 mm (3 ft 3+3⁄8 in)
Wheelbase:
• Overall	6,800 mm (22 ft 3+3⁄4 in) 7,000 mm (22 ft 11+1⁄2 in)*
Length:
• Over beams	11,685 mm (38 ft 4 in)
Axle load	15.0 t (14.8 long tons; 16.5 short tons)
Adhesive weight	30.00 t (29.53 long tons; 33.07 short tons)
Empty weight	41.50 t (40.84 long tons; 45.75 short tons)
Service weight	53.10 t (52.26 long tons; 58.53 short tons)
Boiler pressure	12 kgf/cm (1.18 MPa; 171 lbf/in)
Heating surface:
• Firebox	1.56 m (16.8 sq ft)
• Evaporative	100.68 m (1,083.7 sq ft)
Cylinders	2
Cylinder size	430 mm (16+15⁄16 in)
Piston stroke	600 mm (23+5⁄8 in)

Performance figures
Maximum speed	75 km/h (47 mph)

Career
Numbers	GOE: 185–187, 207–208, 216–218, 226–228, 236, 256–258, 269–271, 279–280 DRG: 71 401 – 71 420
Retired	1930

* from 1911

The Oldenburg Class T 5.1 was a German steam locomotive built for the Grand Duchy of Oldenburg State Railways as a tank engine for passenger train duties. Its design was based on that of the Prussian T 5.1.

The firm of Hanomag manufactured 20 units of the Oldenburg T 5.1 between 1907 and 1921. Like its Prussian sisters it had the defect of poor riding qualities at high speeds. As a result, during the delivery of these engines design changes were made to the running gear, for example the overall wheelbase was increased. But even these measures met with no success.

The Deutsche Reichsbahn took over all 20 locomotives in 1925 as DRG Class 71.4 and gave them numbers 71 401 to 71 420. They were retired by 1930.

References

Hütter, Ingo (2021). Die Dampflokomotiven der Baureihen 60 bis 91 der DRG, DRB, DB, und DR (in German). Werl: DGEG Medien. pp. 76–77. ISBN 978-3-946594-21-5.
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 (1978). Dampflokomotiven deutscher Eisenbahnen, Baureihe 60–96 (EFA 1.3) (in German) (4th ed.). Düsseldorf: Alba. pp. 42–44. ISBN 3-87094-083-2.

v t e Classes of Oldenburg locomotive and railcars
Early locomotives	Oldenburg Nos. 45 and 46 Oldenburg G 1 Oldenburg P 3.2
Passenger and express train locomotives	Oldenburg P 4.1 Oldenburg P 4.2 Oldenburg P 8 Oldenburg S 3 Oldenburg S 5.2 Oldenburg S 10
Goods train locomotives	Oldenburg G 4.2 Oldenburg G 7 Oldenburg G 8.2
Tank locomotives	Oldenburg T 0 Oldenburg T 1.2 Oldenburg T 2 Oldenburg T 3 Oldenburg T 5.1 Oldenburg T 13 Oldenburg T 13.1
Narrow gauge locomotives and railbuses	Oldenburg B Oldenburg railbus
Grand Duchy of Oldenburg State Railways

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