StEG / kKStB 0-6-0 Locomotives in Hungary


Class Details by Steve Llanso of Sweat House Media

Class IVf / 34 / 31 (Locobase 8420)

Data from Commissioner Anderson, Reports of the United States Commissioners to the Paris Universal Exposition , 1878, pp.437-440.

Commissioner Anderson praised the kKStB for the way in which its designs made the best use of some indifferent coal, "... a small and inferior article of fuel supplied by the coal mines of Kladno, near Prague, and Rossnitz, near Vienna. Kladno's coal "...give a short flame, coke with difficulty, and contain a little sulphur and 20 per cent. of cinders and stone." This was mixed with the Rossnitz product of mixed coals, which also coked poorly, "...are very sulphurous ...and contain 20 to 25 per cent. of ashes."

Pretty poor stuff and, the Commissioner observed, "Employed alone, they work badly, but mixed with the slack coal from the Kladno mines each seems, to some extent, to correct the defects of the other." The railroad also mixed in some high-quality Steyerdorf coal, which was quite good. Locobase notes that the rate of consumption per 100 ton-miles varied by only two pounds between the Kladno and the Steyerdorf coal (16 lb vs 14 lb).

The boilers and rods were made of Martin steel and the latter were grooved to reduce weight. The tube plate was made of copper. See Locobase 4612 for a later batch that had a still bigger grate.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassIVf / 34 / 31
Locobase ID8420
RailroadStEG / kKStB
CountryHungary
Whyte0-6-0
Number in Class29
Road Numbers
GaugeStd
Number Built29
Builderseveral
Year1877
Valve GearGooch
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.98 / 3.65
Engine Wheelbase (ft / m)11.98 / 3.65
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)28,109 / 12,750
Weight on Drivers (lbs / kg)84,216 / 38,200
Engine Weight (lbs / kg)84,216 / 38,200
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)47 / 23.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)57.10 / 1450
Boiler Pressure (psi / kPa)130.50 / 900
High Pressure Cylinders (dia x stroke) (in / mm)17.72" x 25.59" / 450x650
Tractive Effort (lbs / kg)15,610 / 7080.59
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.40
Heating Ability
Tubes (number - dia) (in / mm)175 - 2.047" / 52
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)14.93 / 4.55
Firebox Area (sq ft / m2)97.92 / 9.10
Grate Area (sq ft / m2)20.34 / 1.89
Evaporative Heating Surface (sq ft / m2)1492 / 138.70
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1492 / 138.70
Evaporative Heating Surface/Cylinder Volume204.27
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2654
Same as above plus superheater percentage2654
Same as above but substitute firebox area for grate area12,779
Power L13369
Power MT264.58

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