kaiserlich-Koeniglichen Oesterreichischen StB 0-8-2 Locomotives in Austria


Class Details by Steve Llanso of Sweat House Media

Class P/ 402/199 (Locobase 8081)

Data from [link] and from [link], last accessed 13 January 2007. Heating surface area measurements were made from the water side.

One small part of the far-flung Austro-Hungarian railway system was the little Trieste-Parenzo narrow-gauge line on the Adriatic coast. The first three Ps (Krauss Linz works numbers 6494-6496) went to this line in 1911 and remained with the railway when it was taken over by the Italians in 1919. At that point they were designated FS 402. The Italians were quite pleased with the doughty little radial tanks and ordered six more from Reggiane in 1922; these were works numbers 114-119.

Meanwhile the Austrian Niederÿstereichischen Landesbahnen (N+LB) narrow-gauge line needed more power, so the OBB ordered 3 more from Krauss Linz (works numbers 1466-1468 -- no word on why the numbering range changed from pre-war order). These had 300-mm (11.81 in) cylinders. These had various fates, the first apparently being lost in World War II, the second ending its days in 1975 on the Gurkthalbahn, and the third eventually gracing a Ljubljana (Izola) museum as of 1986.

Back in Italy, the FS moved seven of the nine tanks to Sicily in 1938 to run on the 950-mm (37.4") gauge Palermo - Corleone - San Carlo railway, which they continued to do until withdrawn in 1957 (1) and 1959 (the other 6).

P4 (the first Reggiane locomotive) remained in the northern Adriatic. The other eventually came to Rome in 1963 and was preserved in a Milan museum in 1967.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassP/ 402/199
Locobase ID8081
Railroadkaiserlich-Koeniglichen Oesterreichischen StB (kKStB)
CountryAustria
Whyte0-8-2T
Number in Class12
Road NumbersP1-P3, 402.001-009
Gauge76 cm
Number Built12
Builderseveral
Year1911
Valve GearHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.84 / 3
Engine Wheelbase (ft / m)15.42 / 4.70
Ratio of driving wheelbase to overall engine wheelbase 0.64
Overall Wheelbase (engine & tender) (ft / m)15.42 / 4.70
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)61,288 / 27,800
Engine Weight (lbs / kg)79,587 / 36,100
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)792 / 3
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 2.20 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)26 / 13
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)35.40 / 900
Boiler Pressure (psi / kPa)188.50 / 1300
High Pressure Cylinders (dia x stroke) (in / mm)12.99" x 15.75" / 330x400
Tractive Effort (lbs / kg)12,029 / 5456.27
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.10
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)12.14 / 3.70
Firebox Area (sq ft / m2)44.12 / 4.10
Grate Area (sq ft / m2)13.45 / 1.25
Evaporative Heating Surface (sq ft / m2)543 / 50.50
Superheating Surface (sq ft / m2)167 / 15.50
Combined Heating Surface (sq ft / m2)710 / 66
Evaporative Heating Surface/Cylinder Volume224.76
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2535
Same as above plus superheater percentage3144
Same as above but substitute firebox area for grate area10,313
Power L110,434
Power MT1501.31

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