Mullheim-Badenweiler Articulated Locomotives in Germany

Class Details by Steve Llanso of Sweat House Media

Class 4 (Locobase 21068)

Data from "2x2/2 gek. Tender-Locomotive fur 1 m Spurweite Spremberger Localbahn", (Tegel bei Berlin, 1878), p. 39. See also "Mnllheim-Badenweiler Eisenbahn'" in Wikipedia at [], last accessed 7 August 2022. Works numbers were 4644 in May 1898.

The only Mallet to operate on the Mullheim-Badenweiler, the railway's electrification in 1914 led to its sale in 1914 to the Lubben-Cottbuser Kreisbahn as their 7.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID21068
Number in Class3
Road Numbers4
Number Built3
Valve GearHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)56,218 / 25,500
Engine Weight (lbs / kg)56,218 / 25,500
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)56,218 / 25,500
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)23 / 11.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)31.50 / 800
Boiler Pressure (psi / kPa)174 / 12
High Pressure Cylinders (dia x stroke) (in / mm)9.84" x 14.96" / 250x380
Low Pressure Cylinders (dia x stroke) (in / mm)14.76" x 14.96" / 375x380
Tractive Effort (lbs / kg)9417 / 4271.48
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.97
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2) 9.36 / 0.87
Evaporative Heating Surface (sq ft / m2)452 / 42
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)452 / 42
Evaporative Heating Surface/Cylinder Volume343.27
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1629
Same as above plus superheater percentage1629
Same as above but substitute firebox area for grate area
Power L1
Power MT

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