Serbian State 4-4-0 Locomotives in Yugoslavia

Class Details by Steve Llanso of Sweat House Media

Class 101 (Locobase 1722)

Data from A[nthony] E[dward] Durrant, The Steam Locomotives of Eastern Europe (Newton Abbot:David & Charles, 1966).(Thanks to Teemu Koivumaki for his 18 March 2023 email supplying the manufacturers' information.) Works numbers were Esslingen 2200-2203 in 1885 and, 2313, 2320-2322 in 1889. Hartmann works numbers were 1881-1882 in 1892, ARAD works numbers 67-70 in 1900, Haine St Pierre works numbers were 951-954 in 1908.

Originally built for the Serbian State Railways and the first "purely passenger" locomotives. Delivered by Esslingen, Haine St Pierre (works numbers were 854-855), Hartmann, and Weitzer (of Arad) works numbers were 67, 69-70. Five survived as JDZ 101.001-05 in 1933.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID1722
RailroadSerbian State (JDZ)
Number in Class18
Road Numbers101-118
Number Built18
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)56,000 / 25,401
Engine Weight (lbs / kg)95,424 / 43,284
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)72.80 / 1849
Boiler Pressure (psi / kPa)156 / 10.80
High Pressure Cylinders (dia x stroke) (in / mm)17.3" x 25.6" / 439x650
Tractive Effort (lbs / kg)13,955 / 6329.89
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.01
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)25.82 / 2.40
Evaporative Heating Surface (sq ft / m2)1431 / 132.99
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1431 / 132.99
Evaporative Heating Surface/Cylinder Volume205.46
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4028
Same as above plus superheater percentage4028
Same as above but substitute firebox area for grate area
Power L1
Power MT

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