Baden I b

The Baden Class I b locomotives of the Grand Duchy of Baden State Railways were built for the pontoon bridges from Heidelberg to Speyer. Altogether three of these engines were on duty, of which two had been taken over from the Palatinate Railway in 1874. A third machine was procured directly from the Maschinenbau-Gesellschaft Karlsruhe in 1893.

Baden I b
DRG Class 88.75
Type and origin
BuilderMBG Karlsruhe
Build date1874–1893
Total produced3
Specifications
Configuration:
​
 • Whyte0-4-0T
 • GermanGt 22.12
Gauge1,435 mm (4 ft 8+1⁄2 in)
Driver dia.
  • 1 b1: 940 mm (3 ft 1 in)
  • 1 b2: 960 mm (3 ft 1+3⁄4 in)
Wheelbase:
 • Overall		2,100 mm (82+3⁄4 in)
Length:
​
 • Over beams6,925 mm (22 ft 8+3⁄4 in)
Height3,960 mm (12 ft 11+7⁄8 in)
Axle load12.1 t (11.9 long tons; 13.3 short tons)
Adhesive weight24.2 t (23.8 long tons; 26.7 short tons)
Service weight24.2 t (23.8 long tons; 26.7 short tons)
Fuel capacity700 kg (1,500 lb) of coal
Water cap.2.25 m3 (490 imp gal; 590 US gal)
Boiler:
​
No. of heating tubes125
Heating tube length3,140 mm (10 ft 3+1⁄2 in)
Boiler pressure10 kgf/cm2 (981 kPa; 142 lbf/in2)
Heating surface:
 • Firebox		0.73 m2 (7.9 sq ft)
 • Radiative4.95 m2 (53.3 sq ft)
 • Evaporative46.95 m2 (505.4 sq ft)
Cylinders2
Cylinder size280 mm (11 in)
Piston stroke460 mm (18+1⁄8 in)
Valve gearStephenson
Performance figures
Maximum speed45 km/h (28 mph)
Career
Numbers
  • G.Bad.St.E.: 402, 403, 240
  • DRG: 88 7501 – 88 7503
Retired1926

All three locomotives were taken over by the Deutsche Reichsbahn as DRG Class 88.75. Shortly thereafter they were retired, however, as locomotives of the Bavarian Class D VI took over pontoon bridge operations.

This class should not be confused with the earlier class with the same designation which is usually referred to as the Baden I b (old) to distinguish it.

References
    • Hütter, Ingo (2021). Die Dampflokomotiven der Baureihen 60 bis 91 der DRG, DRB, DB, und DR (in German). Werl: DGEG Medien. pp. 307–308. ISBN 978-3-946594-21-5.
    • Lohr, Hermann; Thielmann, Georg (1988). Lokomotiv-Archiv Baden. Berlin: transpress. ISBN 3-344-00210-4.
    • Weisbrod, Manfred; Müller, Hans; Petznik, Wolfgang (1978). Dampflokomotiven deutscher Eisenbahnen, Baureihe 60–96 (EFA 1.3) (in German) (4th ed.). Düsseldorf: Alba. pp. 128–131. ISBN 3-87094-083-2.

    See also
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