Deutsche Reichsbahn / Deutsches Reichsbahn 0-8-0 Locomotives in Germany


Class Details by Steve Llanso of Sweat House Media

Class BR 81 (Locobase 4327)

Data from [link] (June 2002).

John Oxlade's [link] notes this is an Einheitslok (in this case for switching), one of a series of standard locomotive designs. Tonnage rating was 1,785 tons on the level at 40km/h (25 mph).

According to the Fleischmann locomotive model website -- [link] (visited 11 April 2004) -- the design offered good springing and compensation and was very popular with its crews. Even so, only 10 were built, all in 1928. Plans to add to the class in 1939 were overtaken by the Third Reich's entry into World War II. All survived the war and served until being displaced by diesels in the 1960s.


Class K44.8 /99 33 (Locobase 15324)

Data from Albert Gieseler's website at [link] . LKM works numbers were 16501-16511 in 1950 and 30011-30021 in 1951-1952.

In 1961, the East German Railways' shop at Gorlitz modified the pair by fitting superheated boilers; see Locobase 13804.

When the DDR converted to diesel, the 99 333 was scrapped. The 99 332 was preserved for static display at the BSderbahn Molli, a museum railroad in Mecklenberg-Western Pomerania. And the 99 331 is operational in a backup role.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassBR 81K44.8 /99 33
Locobase ID4327 15324
RailroadDeutsche ReichsbahnDeutsches Reichsbahn
CountryGermanyEast Germany
Whyte0-8-0T0-8-0T
Number in Class1021
Road NumbersBR 81 001-81 01099 333
GaugeStd90 cm
Number Built1021
BuilderHanomagLKM Babelsberg
Year19281950
Valve GearHeusingerHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.78 / 4.20 9.84 / 3
Engine Wheelbase (ft / m)13.78 / 4.20 9.84 / 3
Ratio of driving wheelbase to overall engine wheelbase11
Overall Wheelbase (engine & tender) (ft / m) 9.84 / 3
Axle Loading (Maximum Weight per Axle) (lbs / kg)37,479 / 17,00017,857 / 8100
Weight on Drivers (lbs / kg)148,812 / 67,50071,430 / 32,400
Engine Weight (lbs / kg)148,812 / 67,50071,430 / 32,400
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)2100 / 7.95898 / 3.40
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 3.30 / 3 2.40 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)62 / 3130 / 15
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)43.30 / 110031.50 / 800
Boiler Pressure (psi / kPa)203 / 1400203.10 / 1400
High Pressure Cylinders (dia x stroke) (in / mm)19.69" x 21.65" / 500x55014.57" x 15.75" / 370x400
Tractive Effort (lbs / kg)33,448 / 15171.7818,324 / 8311.64
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.45 3.90
Heating Ability
Tubes (number - dia) (in / mm)114 - 1.77" / 45150 - 1.772" / 45
Flues (number - dia) (in / mm)32 - 4.65" / 118
Flue/Tube length (ft / m)11.48 / 3.50 8.53 / 2.60
Firebox Area (sq ft / m2)82.85 / 7.7065.01 / 6.04
Grate Area (sq ft / m2)19.58 / 1.8217.22 / 1.60
Evaporative Heating Surface (sq ft / m2)1023 / 95.07608 / 56.44
Superheating Surface (sq ft / m2)366 / 34.01
Combined Heating Surface (sq ft / m2)1389 / 129.08608 / 56.44
Evaporative Heating Surface/Cylinder Volume134.08200.05
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation39753497
Same as above plus superheater percentage50083497
Same as above but substitute firebox area for grate area21,19113,204
Power L190843273
Power MT538.31404.07

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