industrial 0-6-0 Locomotives in Germany


Class Details by Steve Llanso of Sweat House Media

Class L 3950 (Locobase 7601)

Data from "1. Type Program - "Metallurgical Locomotives" [Huttenlokomotiven] from the Industrial lokomotiven menu on the dampflokomotivarchive.de website at [link], last accessed 22 May 2025. See also [link], accessed 18 June 2006, a website of collectible pictures and cigarette cards. Works numbers were 6458 in 1912, 6537 and 6832 in 1913, 7978 in 1917, and 9316-9317 in 1921.

[Note: Locobase won't reproduced the customer details in this entry as damplokomoitvarchiv.de's well-organized layout allows a user to drill down to individual engines quite easily.]

As the first paragraph shows, Locobase first encountered this design in 2006, but had only limited information about its origins. The cigraette card showed the Tripoli, first of the series.

dampflokomotivarchiv describes this as one of the five industrial tank locomotives produced to standard designs. Very short tanks, plate frame, long dome containing both steam dome and sandbox, and small curve radius indicate its intended roles. Derived from the smaller and less powerful L 3900 variant, the L 3950 found less success as Hanomag sold only six of this heavier version.

Most served several customers and remained in service until well after the end of World War II.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassL 3950
Locobase ID7601
Railroadindustrial
CountryGermany
Whyte0-6-0T
Number in Class6
Road Numberssee note in comments
Gauge1000
Number Built6
BuilderHanomag
Year1911
Valve GearHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.20 / 2.50
Engine Wheelbase (ft / m) 8.20 / 2.50
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m) 8.20 / 2.50
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)97,003 / 44,000
Engine Weight (lbs / kg)97,003 / 44,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1109 / 4.20
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.30 / 1.20
Minimum weight of rail (calculated) (lb/yd / kg/m)54 / 27
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)39.40 / 1000
Boiler Pressure (psi / kPa)205.70 / 1400
High Pressure Cylinders (dia x stroke) (in / mm)17.72" x 19.69" / 450x500
Tractive Effort (lbs / kg)27,437 / 12445.23
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.54
Heating Ability
Tubes (number - dia) (in / mm)260 - 1.811" / 46
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.66 / 3.25
Firebox Area (sq ft / m2)96.88 / 9
Grate Area (sq ft / m2)18.94 / 1.76
Evaporative Heating Surface (sq ft / m2)1410 / 131
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1410 / 131
Evaporative Heating Surface/Cylinder Volume250.88
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3896
Same as above plus superheater percentage3896
Same as above but substitute firebox area for grate area19,928
Power L14553
Power MT310.43

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