Bosnien-Herzogowinische StaatsBahn 0-10-2 Locomotives in Austria

Class Details by Steve Llanso of Sweat House Media

Class 191 (Locobase 3248)

Data from Lokomotive uzanog kolosijeka - Direkcija Sarajevo, 1923, p. 14, archived by Srecko Ignjatovic at [], last accessed 27 December 2021; and A E Durrant The Steam Locomotives of Eastern Europe (Newton Abbot:David & Charles, 1972). See Doug Self's website description of the Klose system at

[], last accessed 13 April 2010; and John Charles McKay, Light Railways for the United Kingdom, India, and the Colonies (London: Crosby, Lockwood and Son, 1896), pp. 161-162.

This one-off tank engine got through tight turns on the Sarajevo-Dubrovnik line by the pantograph action of the two end driving axles (known as the Klose system). The photo on Self's site shows a long-barrelled engine with steam dome well forward and the firebox much larger in diameter than the boiler (perhaps a Belpaire type, but one can't be certain).

McKay delved in more detail about this design to sustain his argument for using light railways more widely. He claimed that the engines developed 350-400 hp.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID3248
RailroadBosnien-Herzogowinische StaatsBahn
Number in Class1
Road Numbers
Number Built1
Valve GearGooch
Locomotive Length and Weight
Driver Wheelbase (ft / m)16.40 / 5
Engine Wheelbase (ft / m)27.72 / 8.45
Ratio of driving wheelbase to overall engine wheelbase 0.59
Overall Wheelbase (engine & tender) (ft / m)27.72 / 8.45
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)92,594 / 42,000
Engine Weight (lbs / kg)110,231 / 50,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)110,231 / 50,000
Tender Water Capacity (gals / ML)1431 / 5.42
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 4.40 / 4
Minimum weight of rail (calculated) (lb/yd / kg/m)31 / 15.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)41.30 / 1050
Boiler Pressure (psi / kPa)204.50 / 14.10
High Pressure Cylinders (dia x stroke) (in / mm)15.35" x 17.72" / 390x450
Tractive Effort (lbs / kg)17,573 / 7970.99
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.27
Heating Ability
Tubes (number - dia) (in / mm)147 - 2.008" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)14.76 / 4.50
Firebox Area (sq ft / m2)72.55 / 6.74
Grate Area (sq ft / m2)18.19 / 1.69
Evaporative Heating Surface (sq ft / m2)1213 / 112.70
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1213 / 112.70
Evaporative Heating Surface/Cylinder Volume319.60
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3720
Same as above plus superheater percentage3720
Same as above but substitute firebox area for grate area14,836
Power L15844
Power MT695.71

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