Imperial-Royal Army Railway class VI and Railways of the Kingdom of the Serbs, Croatians and Slovenes class VIc7
Yugoslav State Railway class 92
Yugoslavia 1918 49 produced
In World War I, Henschel designed a Mallet tender locomotive for use by the Austro-Hungarian field railways in Serbia. 20 were to be delivered to Serbia, but by the end of the war only 19 had been completed. In 1930, Henschel built 30 more as war reparations. They were called class VIc7 by the railway of the SHS state and the Yugoslavian State Railways. In 1933, the JDŽ renumbered them to class 92. Their dominion was the heavy coal and ore traffic on the winding and steep narrow gauge lines. In 1970, the last few locomotives were still in service. Today only 92-043 is being preserved in the Požega museum.
Technical data
General
- Built
- 1918, 1922
- Manufacturers
- Henschel
- Wheel arrangement
- 2-6-6-0
- Gauge
- 760 mm (Bosnian gauge)
Dimensions and weights
- Length
- 18.07 m
- Wheelbase
- 7.80 m
- Empty mass
- 50 t
- Service mass
- 55 t
- Adhesion mass
- 48 t
- Total mass
- 88 t
- Rigid wheelbase
- 2.00 m
- Axle load
- 8 t
- Water capacity
- 15,000 l
- Fuel capacity
- 5 t (coal)
Boiler
- Grate area
- 3 m²
- Firebox surface
- 9.7 m²
- Tube heating surface
- 90.04 m²
- Evaporative heating surface
- 99.74 m²
- Superheater surface
- 27.01 m²
- Total heating surface
- 126.8 m²
Power plant
- Driver diameter
- 800 mm
- Boiler pressure
- 14 bar
- Expansion type
- compound
- Cylinders
- four, HP: 360 x 400 mm and LP: 560 x 400 mm
Power
- Power source
- steam
- Estimated power
- 750 kW (1,020 PS)
- Top speed
- 30 km/h
- Starting effort
- 109.1 kN
- Starting effort simple
- 131.0 kN
Calculated values
- Factor of adhesion
- 1 : 4.31
- Optimal speed
- 42 km/h
- Power-to-weight ratio
- 13.6 kW/t
- Heating Surface Equivalent
- 202.3 m²
- Cylinder volume/HSE
- 1 : 889.70
- Adhesive weight/Total
- 1 : 1.15
- Tractive force/Heating surface
- 1 : 17.98
- Grate area/Heating surface
- 1 : 42.25
- Firebox/Tube surface
- 1 : 9.28
- Total/Superheater
- 1 : 3.69
