Secundairbahnen Hermann Bachstein Articulated Locomotives in Germany


Class Details by Steve Llanso of Sweat House Media

Class 81/BR 98.60 (Locobase 20983)

Data from "Jung Typ Bachstein" in Wikipedia at [], last accessed 12 February 2022. Information about original railways, successors, and DRG BR 98 from Dietmar Stressow und Jens Merte, "Jung & Staimer oHG"liferliste dated 1 January 2008 supplied in Jue 2021 by Allen Stanley from his extensive Rail Data Exchange collection. Works numbers were 472-474 in1901; 755, 764-765 in 1904; 1123 in 1907; 1239 in 1909; and 1791 in 1912.

Works Road number Railway

472 82 Greussen-Ebelebener

473 81 Weimar-Berka-Blankenhainer

474 83 Hohenbra-Ebelebener

755 Neubrandenburg-Friedlander

764 84 Weimar-Berka-Blankenhainer

765 85 Weimar-Berka-Blankenhainer

1123 Suddeutsche Eisenbahngesellschaft (SEG)

1239 Suddeutsche Eisenbahngesellschaft (SEG)

1791 Suddeutsche Eisenbahngesellschaft (SEG)

Principal Dimensions by Steve Llanso of Sweat House Media

Class81/BR 98.60
Locobase ID20983
RailroadSecundairbahnen Hermann Bachstein
CountryGermany
Whyte0-4-4-0T
Number in Class9
Road Numbers81-89/BR
GaugeStd
Number Built9
BuilderJung
Year1901
Valve GearHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m) 5.58 / 1.70
Engine Wheelbase (ft / m)17.72 / 5.40
Ratio of driving wheelbase to overall engine wheelbase 0.31
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)19,842 / 9000
Weight on Drivers (lbs / kg)94,799 / 43,000
Engine Weight (lbs / kg)94,799 / 43,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)94,799 / 43,000
Tender Water Capacity (gals / ML)1320 / 5
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.10 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)39 / 19.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42.50 / 1080
Boiler Pressure (psi / kPa)174 / 12
High Pressure Cylinders (dia x stroke) (in / mm)11.81" x 21.65" / 300x550
Low Pressure Cylinders (dia x stroke) (in / mm)18.11" x 21.65" / 460x550
Tractive Effort (lbs / kg)14,746 / 6688.68
Factor of Adhesion (Weight on Drivers/Tractive Effort) 6.43
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)16.25 / 1.51
Evaporative Heating Surface (sq ft / m2)771 / 71.64
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)771 / 71.64
Evaporative Heating Surface/Cylinder Volume280.88
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2828
Same as above plus superheater percentage2828
Same as above but substitute firebox area for grate area
Power L1
Power MT

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