The reference for locomotives and railcars
South German Railway Company No. 104 and Alb Valley Railway No. 12s
Germany | 1925 | 2 produced
Nr. 104 “Zell” bei der Museumsbahn Blonay-Chamby im Frühling 2010
Nr. 104 “Zell” bei der Museumsbahn Blonay-Chamby im Frühling 2010
Built1925, 1928
Axle config0-6-6-0T (Erie (Mallet)) 
Gauge3 ft 3 3/8 in (Meter gauge)
Dimensions and Weights
Length37 ft 4 13/16 in
Wheelbase22 ft 11 9/16 in
Empty weight99,208 lbs
Service weight124,561 lbs
Adhesive weight124,561 lbs
Axle load19,842 lbs
Water capacity1,585 us gal
Fuel capacity3,307 lbs (coal)
Power sourcesteam
Indicated power577 hp (430 kW)
Optimal speed12 mph
Top speed22 mph
Starting effort30,231 lbf
with start valve36,277 lbf
Power Plant
Driver diameter35.4 in
Boiler pressure203 psi
Expansion typecompound
Cylindersfour, HP: 15 3/4 x 17 11/16 in
and LP: 24 7/16 x 17 11/16 in
Grate area19.9 sq ft
Firebox area79.4 sq ft
Tube heating area794.4 sq ft
Evaporative heating area873.8 sq ft
Total heating area873.8 sq ft
Calculated Values
steam locomotive
narrow gauge
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 English
  • Complete: full name in local language