The reference for locomotives and railcars
Lokalbahn AG No. 17 to 49
German Reichsbahn class 9873-74
Germany | 1890 | 13 produced
No. 18 in January 1903
No. 18 in January 1903
Georg Lotter / Die Lokomotive, January 1905
Variant17-2023-25, 40, 41, 44, 47-49
Axle config2-6-0T (Mogul) 
Gauge4 ft 8 1/2 in (Standard gauge)
Dimensions and Weights
Length26 ft 6 1/2 in
Wheelbase15 ft 9 in
Fixed wheelbase8 ft 10 5/16 in
Service weight77,162 lbs
Adhesive weight59,525 lbs
Axle load20,062 lbs
Water capacity1,057 us gal
Fuel capacity3,748 lbs (coal)
Power sourcesteam
Indicated power247 hp (184 kW)
Optimal speed17 mph14 mph
Top speed28 mph
Starting effort9,541 lbf11,137 lbf
with start valve11,449 lbf13,364 lbf
Power Plant
Driver diameter42.9 in
Boiler pressure174 psi203 psi
Expansion typecompound
Cylinderstwo, HP: 14 3/16 x 19 11/16 in
and LP: 21 5/8 x 19 11/16 in
Grate area18.3 sq ft
Firebox area62.8 sq ft
Tube heating area649.8 sq ft
Evaporative heating area712.6 sq ft
Total heating area712.6 sq ft
Calculated Values
steam locomotive
secondary line
tank locomotive
last changed: 08 2023

We use cookies to save the following settings:

  • selected navigation structure
  • selected language
  • preferred units
  • spelling of railway company names

If you refuse the use of cookies, the settings will only be retained for the current session and will be reset to the default values the next time you visit the site.

Display of units

Here you can set the desired unit system for the technical data.

  • Metric: Lengths in meters, weights in tonnes, and volumes in cubic meters
  • Imperial (UK): Lengths in feet/inches, weights in long tons and volumes in imperial gallons
  • Imperial (US): Lengths in feet/inches, weights in pounds, and volumes in US gallons
  • Individual: Depends on the country of origin of each locomotive
Operator names

Here you can set the display of railway company names.

  • Short: Abbreviation or short form of the name
  • Standard: commonly used name, partially translated to German
  • Complete: full name in local language