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{{short description|Class of 6 German 2–4–2T locomotives}}
{{unreferenced|date=December 2014}}
{{more citations needed|date=June 2021}}
{{Infobox German Railway Vehicle
{{Infobox locomotive
| Baureihe= DRG Class 71.0
| name = DRG Class 71.0
| Farbe1=
| bgcolor = A00
| Farbe2=
| color = FFF
| Abbildung=
| image =
| Name=
| alt =
| Nummerierung= DRG 71 001–006
| caption =
| Hersteller= [[Berliner Maschinenbau|Schwartzkopff]], [[Borsig]], [[Krupp]]
| powertype = Steam
| Baujahre= 1934–1936
| designer =
| Ausmusterung= 1956
| builder = {{ubl|[[Berliner Maschinenbau]] (2)|[[Borsig]] (2)|[[Krupp]] (2)}}
| Anzahl= 6
| ordernumber =
| Achsformel=
| serialnumber =
| Wheel arrangement=2-4-2
| buildmodel =
| Bauart= 1'B1' h2t
| builddate = 1934–1936
| Gattung= Pt 24.15
| totalproduction = 6
| Spurweite= {{track gauge|1435mm}}
| rebuilder =
| Treibraddurchmesser= {{convert|1,600|mm|in|2|abbr=on}}
| rebuilddate =
| VorneLaufraddurchmesser= {{convert|850|mm|in|2|abbr=on}}
| numberrebuilt =
| HintenLaufraddurchmesser= {{convert|850|mm|in|2|abbr=on}}
| whytetype = {{whyte|2-4-2|T}}
| AussenLaufraddurchmesser=
| uicclass = 1′B1′ h2t
| InnenLaufraddurchmesser=
| DRGtype = Pt 24.15
| Laufraddurchmesser=
| driver = <!-- e.g. 1st, 2nd or 3rd coupled axle -->
| Anfahrzugkraft=
| gauge = {{track gauge|sg}}
| Beschleunigung=
| leadingdiameter = {{convert|850|mm|ftin|frac=8|abbr=on}}
| Leistungskennziffer=
| driverdiameter = {{ubl|''001–002:'' {{convert|1500|mm|ftin|frac=8|abbr=on}}|''003–006:'' {{convert|1600|mm|ftin|frac=8|abbr=on}}}}
| Höchstgeschwindigkeit= {{convert|90|km/h|abbr=on}}
| trailingdiameter = {{convert|850|mm|ftin|frac=8|abbr=on}}
| LängeÜberKupplung=
| tenderdiameter = <!-- tender wheel diameter -->
| LängeÜberPuffer= {{convert|11,800|mm|ftin|abbr=on}}
| carrydiameter =
| Länge=
| minimumcurve =
| Höhe= {{convert|4,165|mm|ftin|abbr=on}}
| wheelbase =
| Breite=
| wheelspacing = {{ubl|{{convert|2700|mm|ftin|frac=8|abbr=on}} +|{{convert|3000|mm|ftin|frac=8|abbr=on}} +|<u>{{convert|2700|mm|ftin|frac=8|abbr=on}} {{=}}</u>}}
| Drehzapfenabstand=
| engine total = {{convert|8400|mm|ftin|frac=8|abbr=on}}
| AchsabstandDerFahrgestelle=
| leading =
| FesterRadstand= {{convert|3,000|mm|ftin|abbr=on}}
| drivers = <!-- USA terminology -->
| Gesamtradstand= {{convert|8,400|mm|ftin|abbr=on}}
| coupled = <!-- British terminology -->
| RadstandMitTender=
| trailing =
| Leermasse=
| length =
| Dienstmasse= {{convert|58.6|t|abbr=on}}
| over headstocks = {{convert|10500|mm|ftin|frac=8|abbr=on}}
| DienstmasseMitTender=
| Reibungsmasse= {{convert|30.0|t|abbr=on}}
| over buffers = {{convert|11800|mm|ftin|frac=8|abbr=on}}
| width =
| Radsatzfahrmasse= {{convert|15.0|t|abbr=on}}
| height = {{convert|4165|mm|ftin|frac=16|abbr=on}}
| Antrieb=
| frametype =
| Geschwindigkeitsmesser=
| axleload = {{convert|15.0|t|abbr=on}}
| Steuerung=
| leadingbogie/pony= <!-- load on leading bogie or pony wheel -->
| Übersetzungsstufen=
| coupled all = <!-- when the load on all coupled wheels are the same -->
| Kupplungstyp=
| coupled 1 = <!-- load on 1st coupled wheel -->
| Bremsen=
| coupled 2 = <!-- load on 2nd coupled wheel -->
| Zusatzbremse=
| trail bogie/pony= <!-- load on trailing bogie or pony wheel -->
| Feststellbremse=
| weightondrivers = {{ubl|''001–002:'' {{convert|29.9|t|abbr=on}}|''003–006:'' {{convert|30.0|t|abbr=on}}}}
| Zugheizung=
| emptyweight = {{ubl|''001–002:'' {{convert|45.4|t|abbr=on}}|''003–006:'' {{convert|45.62|t|abbr=on}}}}
| Lokbremse=
| serviceweight = {{ubl|''001–002:'' {{convert|48.6|t|abbr=on}}|''003–006:'' {{convert|58.61|t|abbr=on}}}}
| Zugbremse=
| locoweight =
| Zugsicherung=
| fueltype = Coal
| Halbmesser=
| fuelcap = {{ubl|''001–002:'' {{convert|3.0|t|abbr=on}}|''003–006:'' {{convert|2.8|t|abbr=on}}}}
| Besonderheiten=
| watercap = {{convert|7|m3|impgal usgal|abbr=on}}
| Anmerkung=
| tendercap =
| Zylinderanzahl= 2
| sandcap =
| Zylinderdurchmesser= {{convert|330|mm|in|2|abbr=on}}
| fireboxtype = <!-- Round-top, Belpaire, combustion chamber, etc. -->
| NDZylinderdurchmesser=
| firearea = {{ubl|''001–002:'' {{convert|1.37|m2|abbr=on}}|''003–006:'' {{convert|1.38|m2|abbr=on}}}}
| HDZylinderdurchmesser=
| boiler = <!-- Watson Standard no. x, etc -->
| Kolbenhub= {{convert|660|mm|in|2|abbr=on}}
| boilertype = <!-- Domeless, etc -->
| Kuppelraddurchmesser= {{convert|1,600|mm|in|2|abbr=on}}
| pitch = {{convert|2900|mm|ftin|frac=8|abbr=on}}
| Kessel=
| diameterinside =
| Kessellänge=
| Kesseldruck= {{convert|20|bar|kPa psi|abbr=on}}
| lengthinside = {{convert|3500|mm|ftin|frac=8|abbr=on}}
| smalltubediameter= {{convert|44.5|mm|in|frac=16|abbr=on}}, 70 off
| AnzahlHeizrohre= 70
| largetubediameter= {{convert|118|mm|in|frac=16|abbr=on}}, 26 off
| AnzahlRauchrohre= 26
| Heizrohrlänge= {{convert|3,500|mm|in|abbr=on}}
| boilerpressure = {{convert|20|bar|kgf/cm2 psi|sigfig=3|abbr=on}}
| safetyvalvetype = <!-- Salter spring balance, Ramsbottom, Pop, etc. -->
| Rostfläche= {{convert|1.38|m2|sqft|abbr=on}}
| feedwaterheater =
| Strahlungsheizfläche=
| fireboxarea = {{ubl|''001–002:'' {{convert|5.53|m2|abbr=on}}|''003–006:'' {{convert|5.89|m2|abbr=on}}}}
| Rohrheizfläche=
| Überhitzerfläche= {{convert|28.60|m2|sqft|abbr=on}}
| tubearea = {{convert|30.4|m2|abbr=on}}
| archarea =
| Verdampfungsheizfläche= {{convert|67.74|m2|sqft|abbr=on}}
| IndizierteLeistung= {{convert|419|kW|abbr=on}}
| fluearea = {{convert|31.5|m2|abbr=on}}
| tubesandflues =
| Steuerungsart= [[Walschaerts]] (Heusinger)
| totalsurface = {{ubl|''001–002:'' {{convert|67.43|m2|abbr=on}}|''003–006:'' {{convert|67.79|m2|abbr=on}}}}
| Zylinderdruck=
| superheatertype =
| Tenderbauart=
| superheaterarea = {{convert|28.6|m2|abbr=on}}
| DienstmasseTender=
| cylindercount = Two, outside
| Wasser=
| cylindersize = {{ubl|''001–002:'' {{convert|310|x|660|mm|in|frac=16|abbr=on}}|''003–006:'' {{convert|330|x|660|mm|in|frac=16|abbr=on}}}}
| Brennstoff=
| cylinderpressure =
| valvegear = [[Walschaerts valve gear|Heusinger (Walschaerts)]]
| valvetype =
| valvetravel =
| valvelap =
| valvelead =
| transmission =
| trainheating =
| locobrakes =
| locobrakeforce =
| trainbrakes =
| safety =
| coupling =
| maxspeed = {{ubl|''001–002:'' {{convert|90|km/h|mph|0|abbr=on}}|''003–006:'' {{convert|100|km/h|mph|0|abbr=on}}}}
| indicatedpower = {{convert|570|PS|kW hp|sigfig=3|abbr=on}}
| poweroutput =
| tractiveeffort =
| factorofadhesion =
| operator = {{ubl|[[Deutsche Reichsbahn]]|→ [[Deutsche Bundesbahn]]}}
| operatorclass =
| powerclass =
| numinclass =
| fleetnumbers = 71 001 – 71 006
| officialname =
| nicknames =
| axleloadclass =
| locale =
| deliverydate =
| firstrundate =
| lastrundate =
| retiredate = 1955–1956
| withdrawndate =
| preservedunits =
| restoredate =
| scrapdate =
| currentowner =
| disposition =
| notes =
}}
}}
The German '''DRG Class 71.0''' was a four-coupled [[tank locomotive]] with the [[Deutsche Reichsbahn-Gesellschaft|Deutsche Reichsbahn]], which was intended as a replacement for [[railbuses]]. Originally it had been planned for these standard engines (''[[Einheitsdampflokomotiven|Einheitsloks]]'') to haul fast passenger trains.
The German '''DRG Class 71.0''' was a {{whyte|2-4-2|T}} locomotive with the [[Deutsche Reichsbahn-Gesellschaft|Deutsche Reichsbahn]], which was intended as a replacement for [[railbuses]]. Originally it had been planned for these standard engines (''[[Einheitsdampflokomotiven|Einheitsloks]]'') to haul fast passenger trains.


Two vehicles were delivered in 1934 by the firm of [[Berliner Maschinenbau|Schwartzkopff]] and two each in 1936 by the firms of [[Borsig]] and [[Krupp]]. The two-[[cylinder (locomotive)|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 sheet steel [[locomotive frame|frame]]. The second [[coupled wheel]]set was driven and the [[carrying wheels]] rested in [[Bissel axles]].
Two vehicles were delivered in 1934 by the firm of [[Berliner Maschinenbau|Schwartzkopff]] and two each in 1936 by the firms of [[Borsig]] and [[Krupp]]. The two-[[cylinder (locomotive)|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 [[locomotive frame|frame]]. The second [[coupled wheel]]set 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 in der Pfalz|Landau]]. The locomotives were retired by 1956.
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 in der Pfalz|Landau]]. The locomotives were retired by 1956.
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==See also==
==See also==
* [[List of DRG locomotives and railbuses]]
* [[List of DRG locomotives and railbuses]]

==References==
{{reflist}}
*{{Hütter-60bis91|pages=68–69}}
*{{Weisbrod-EFA1.3|pages=45–48, 230–231}}


== External links ==
== External links ==
Line 107: Line 150:
[[Category:Scrapped locomotives]]
[[Category:Scrapped locomotives]]
[[Category:Standard gauge locomotives of Germany]]
[[Category:Standard gauge locomotives of Germany]]
[[Category:1′B1′ h2t locomotives]]

Latest revision as of 05:29, 28 May 2024

DRG Class 71.0
Type and origin
Power typeSteam
Builder
Build date1934–1936
Total produced6
Specifications
Configuration:
​
 • Whyte2-4-2T
 • UIC1′B1′ h2t
 • GermanPt 24.15
Gauge1,435 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) =
 • Engine8,400 mm (27 ft 6+3⁄4 in)
Length:
​
 • Over headstocks10,500 mm (34 ft 5+3⁄8 in)
 • Over buffers11,800 mm (38 ft 8+5⁄8 in)
Height4,165 mm (13 ft 8 in)
Axle load15.0 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 typeCoal
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 m3 (1,500 imp gal; 1,800 US gal)
Firebox:​
 • Grate area
  • 001–002: 1.37 m2 (14.7 sq ft)
  • 003–006: 1.38 m2 (14.9 sq ft)
Boiler:
​
 • Pitch2,900 mm (9 ft 6+1⁄8 in)
 • Tube plates3,500 mm (11 ft 5+3⁄4 in)
 • Small tubes44.5 mm (1+3⁄4 in), 70 off
 • Large tubes118 mm (4+5⁄8 in), 26 off
Boiler pressure20 bar (20.4 kgf/cm2; 290 psi)
Heating surface:​
 • Firebox
  • 001–002: 5.53 m2 (59.5 sq ft)
  • 003–006: 5.89 m2 (63.4 sq ft)
 • Tubes30.4 m2 (327 sq ft)
 • Flues31.5 m2 (339 sq ft)
 • Total surface
  • 001–002: 67.43 m2 (725.8 sq ft)
  • 003–006: 67.79 m2 (729.7 sq ft)
Superheater:
​
 • Heating area28.6 m2 (308 sq ft)
CylindersTwo, 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 gearHeusinger (Walschaerts)
Performance figures
Maximum speed
  • 001–002: 90 km/h (56 mph)
  • 003–006: 100 km/h (62 mph)
Indicated power570 PS (419 kW; 562 hp)
Career
Operators
Numbers71 001 – 71 006
Retired1955–1956

The German DRG Class 71.0 was a 2-4-2T 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.

See also

[edit]

References

[edit]
  • 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.
[edit]
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