The Baden VI b was the first German tank locomotive with a 2-6-2 wheel arrangement. It was developed by the firm of Maffei for the Grand Duchy of Baden State Railways in order to provide faster services on the Höllentalbahn. As a result, the first six batches were given a firebox sloping to the rear. One striking feature was also the connecting pipe between the two steam domes.

Baden VI b
DRG Class 75.1–3
Baden VIb, No. 279
Type and origin
Builder
Build date1900–1923
Total produced173
Specifications
Configuration:
 • Whyte2-6-2T
 • GermanPt 35.14
Gauge1,435 mm (4 ft 8+12 in)
Leading dia.990 mm (3 ft 3 in)
Driver dia.1,480 mm (4 ft 10+14 in)
Trailing dia.990 mm (3 ft 3 in)
Wheelbase:
 • Overall8,400 mm (27 ft 6+34 in)
Length:
 • Over beams11,760 mm (38 ft 7 in)
Height4,150 mm (13 ft 7+38 in)
Axle load14.1 t (13.9 long tons; 15.5 short tons)
Adhesive weight42.2–42.3 t (41.5–41.6 long tons; 46.5–46.6 short tons)
Empty weight50.8–52.1 t (50.0–51.3 long tons; 56.0–57.4 short tons)
Service weight64.2–67.3 t (63.2–66.2 long tons; 70.8–74.2 short tons)
Fuel capacity3 t (2.95 long tons; 3.31 short tons) of coal
Water cap.7.0 m3 (1,500 imp gal; 1,800 US gal)
Boiler:
No. of heating tubes185–189
Heating tube length4,050 mm (13 ft 3+12 in)
Boiler pressure13 kgf/cm2 (1.27 MPa; 185 lbf/in2)
Heating surface:
 • Firebox1.83 m2 (19.7 sq ft)
 • Radiative8.0–8.7 m2 (86–94 sq ft)
 • Tubes105.92–108.21 m2 (1,140.1–1,164.8 sq ft)
 • Evaporative113.91–118.62 m2 (1,226.1–1,276.8 sq ft)
Cylinder size435 mm (17+18 in)
Piston stroke630 mm (24+1316 in)
Valve gearWalschaerts (Heusinger)
Loco brakeWestinghouse air brake
Performance figures
Maximum speed80 km/h (50 mph)
Career
Numbers
  • G.Bad.St.E.: 4…389, 793–812, 1133–1152, 1193–1214
  • DRG: 75 101 … 75 302
Retired1933–1965

After the first delivery of 15 examples from Maffei, the remaining batches, 2 to 11, were produced by the Maschinenbau-Gesellschaft Karlsruhe. The Deutsche Reichsbahn took over 164 engines. Between 1935 and 1937, five locomotives were sold to the Kreis Oldenburger Eisenbahn; they returned to the Reichsbahn in August 1941 when the KOE was nationalised, and the locomotives regained their former DRG numbers.[1]

Most of the Reichsbahn fleet survived World War II. The Deutsche Bundesbahn ended up with 117 vehicles. Their retirement from the DB began in 1957 and was completed when 75 299 was withdrawn in 1962. The Deutsche Reichsbahn in East Germany took its engines out of service between 1955 and 1965.

Within this class there were differences between the eleven individual batches in terms of overall length, weight, the height of the boiler axis above the rails and the shape of the water tanks.

None of this class is known to have been preserved.

See also

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Notes

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  1. ^ Weisbrod (1991), pp. 209–210.

References

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  • Weisbrod, Manfred (1991). Dampflokomotiven deutscher Eisenbahnen, Von Privatbahnen zur DRG (EFA 1.5) (in German). Düsseldorf: Alba. pp. 209–210. ISBN 3-87094-139-1.

Further reading

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  • Hütter, Ingo (2021). Die Dampflokomotiven der Baureihen 60 bis 91 der DRG, DRB, DB, und DR (in German). Werl: DGEG Medien. pp. 149–155. 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. 71–74. ISBN 3-87094-083-2.