DRG Class 71.0 - Misplaced Pages

Class of 6 German 2–4–2T locomotives

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DRG Class 71.0

Type and origin
Power type	Steam
Builder	Berliner Maschinenbau (2) Borsig (2) Krupp (2)
Build date	1934–1936
Total produced	6

Specifications
Configuration:
• Whyte	2-4-2 T
• UIC	1′B1′ h2t
• German	Pt 24.15
Gauge	1,435 mm (4 ft 8+1⁄2 in)
Leading dia.	850 mm (2 ft 9+1⁄2 in)
Driver dia.	001–002: 1,500 mm (4 ft 11 in) 003–006: 1,600 mm (5 ft 3 in)
Trailing dia.	850 mm (2 ft 9+1⁄2 in)
Wheelbase:
• Axle spacing (Asymmetrical)	2,700 mm (8 ft 10+1⁄4 in) + 3,000 mm (9 ft 10+1⁄8 in) + 2,700 mm (8 ft 10+1⁄4 in) =
• Engine	8,400 mm (27 ft 6+3⁄4 in)
Length:
• Over headstocks	10,500 mm (34 ft 5+3⁄8 in)
• Over buffers	11,800 mm (38 ft 8+5⁄8 in)
Height	4,165 mm (13 ft 8 in)
Axle load	15.0 t (14.8 long tons; 16.5 short tons)
Adhesive weight	001–002: 29.9 t (29.4 long tons; 33.0 short tons) 003–006: 30.0 t (29.5 long tons; 33.1 short tons)
Empty weight	001–002: 45.4 t (44.7 long tons; 50.0 short tons) 003–006: 45.62 t (44.90 long tons; 50.29 short tons)
Service weight	001–002: 48.6 t (47.8 long tons; 53.6 short tons) 003–006: 58.61 t (57.68 long tons; 64.61 short tons)
Fuel type	Coal
Fuel capacity	001–002: 3.0 t (3.0 long tons; 3.3 short tons) 003–006: 2.8 t (2.8 long tons; 3.1 short tons)
Water cap.	7 m (1,500 imp gal; 1,800 US gal)
Firebox:
• Grate area	001–002: 1.37 m (14.7 sq ft) 003–006: 1.38 m (14.9 sq ft)
Boiler:
• Pitch	2,900 mm (9 ft 6+1⁄8 in)
• Tube plates	3,500 mm (11 ft 5+3⁄4 in)
• Small tubes	44.5 mm (1+3⁄4 in), 70 off
• Large tubes	118 mm (4+5⁄8 in), 26 off
Boiler pressure	20 bar (20.4 kgf/cm; 290 psi)
Heating surface:
• Firebox	001–002: 5.53 m (59.5 sq ft) 003–006: 5.89 m (63.4 sq ft)
• Tubes	30.4 m (327 sq ft)
• Flues	31.5 m (339 sq ft)
• Total surface	001–002: 67.43 m (725.8 sq ft) 003–006: 67.79 m (729.7 sq ft)
Superheater:
• Heating area	28.6 m (308 sq ft)
Cylinders	Two, outside
Cylinder size	001–002: 310 mm × 660 mm (12+3⁄16 in × 26 in) 003–006: 330 mm × 660 mm (13 in × 26 in)
Valve gear	Heusinger (Walschaerts)

Performance figures
Maximum speed	001–002: 90 km/h (56 mph) 003–006: 100 km/h (62 mph)
Indicated power	570 PS (419 kW; 562 hp)

Career
Operators	Deutsche Reichsbahn → Deutsche Bundesbahn
Numbers	71 001 – 71 006
Retired	1955–1956

The German DRG Class 71.0 was a 2-4-2 T locomotive with the Deutsche Reichsbahn, which was intended as a replacement for railbuses. Originally it had been planned for these standard engines (Einheitsloks) to haul fast passenger trains.

Two vehicles were delivered in 1934 by the firm of Schwartzkopff and two each in 1936 by the firms of Borsig and Krupp. The two-cylinder superheated engines were equipped with automatic underfeed stokers for one-man operation. In the course of its service the boiler overpressure was reduced from 20 bar to 16 bar for safety reasons. All the locomotives had a plate frame. The second coupled wheelset was driven and the carrying wheels rested in Bissel axles.

The Deutsche Bundesbahn took over all the engines after the Second World War and allocated them to the locomotive depot (Bahnbetriebswerk or Bw) in Nuremberg. Later they were all transferred to Kaiserslautern and Landau. The locomotives were retired by 1956.

No examples of the DRG Class 71.0 remain.

References

Hütter, Ingo (2021). Die Dampflokomotiven der Baureihen 60 bis 91 der DRG, DRB, DB, und DR (in German). Werl: DGEG Medien. pp. 68–69. ISBN 978-3-946594-21-5.
Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1978). Dampflokomotiven deutscher Eisenbahnen, Baureihe 60–96 (EFA 1.3) (in German) (4th ed.). Düsseldorf: Alba. pp. 45–48, 230–231. ISBN 3-87094-083-2.

External links

Locomotive drawing and data

v t e Classes of Deutsche Reichsbahn locomotive
Express train tender locomotives	01 01.10 02 02.1 03 03.10 04 05 06 19.10
Passenger train tender locomotives	23 24
Goods train tender locomotives	41 42 43 44 45 50 52 56.2–8
Express train tank locomotives	61
Passenger train tank locomotives	62 64 71.0
Goods train tank locomotives	80 81 84 85 86 87 89.0
Rack railway, branch line & narrow gauge locomotives	97.5 98.10 98.11 99.19 99.21 99.22 99.31 99.32 99.73–76
Electric locomotives	E 04 E 05 E 06.1 E 15 E 16 E 16.5 E 17 E 18 E 19 E 21 E 21.5 E 44 E 60 E 63 E 75 E 77 E 80 E 91 E 93 E 94 E 95 E 178 E 244
Diesel locomotives	V 3001 V 3201 V 3601 V 3602 V 3801 Kö I Köf II
Railbuses and multiple units	ET 25 ET 25.1 ET 31 ET 41 ET 51 ET 51.1 ET 55 ET 65 ET 82 ET 85 ET 87 ET 89 ET 91 SVT 125 SVT 137 ET 165 ET 166 ET 167 ET 168 ET 169 ET 171 SVT 877 Wismar
State railway locomotive lists	Baden Bavaria Mecklenburg Oldenburg Palatinate Prussia Saxony Württemberg

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See also

References

External links