Yugoslav State 2-10-0 Locomotives in Yugoslavia

Class Details by Steve Llanso of Sweat House Media

Class 583/30 (Locobase 1716)

Data from "Lokomotiva serijia30", Skice I Podatci Lokomotiva (Zagreb: JDZ, 1955), p. 27; and A[nthony] E[dward] Durrant, The Steam Locomotives of Eastern Europe (Newton Abbot:David & Charles, 1966. See also" JDZ 30" in Wikipedia at "[]" and "Towbar at the Iron Gate [Sipska Locomotivska Vuca]" in Wikipedia at [], both last accessed 31 December 2021. (Many thanks to Aljaz Skarlovnik for his 19 July 2019 email supplying more information about these locomotives.) Works numbers were 12150-12189 in 1930.

Part of a three-type procurement described in Locobases 1714-1716, which show Class 05 4-6-2, Class 06 2-8-2, and Class 30 2-10-0, respectively. Locobase notes that all three designs rolled on six axles with adhesion and axle loading requirements doubtless dictating the variations.

The original specification called for a maximum speed of 65 kph (40.4 mph), but the sustained power to haul 900 tons up a 1% grade at 40 to 50 kph (25-31 mph).

The most ponderous of the three, the Decapod class worked primarily in heavy freight, although an occasional Ljubljana express might require one of these engines. Renumbered 30.001-40 in 1933. Unlike many locomotive classes captured by the Third Reich in World War II, the Deutches ReichsBahn did not bestow a BauReihe designation on the 30 class in a class. Although many were distributed to lines in Italy, Dalmatia, and northern Macedonia, they all returned to Yugoslav control in 1945.

In 1949, five of the Class 30s were assigned to tow ships using the Iron Gate on the Danube River at the boundary of Serbia and Romania. In 1896, Austria-Hungary created a shipping channel through the forbidding gorge. While it created a constant water depth, upstream ships could not cope with the high water flow heading downstream to the Black Sea.

At first tugboats towed the ships, but in February 1916, a German-Austro-Hungarian team built a 2,230 metre (1.4 mile), standard-gauge railway (treidelbahn) on the Serbian bank of the canal. This island location wasn't connected to any other railway. Double-tracked, the line allowed one locomotive to pull a ship up while a second headed downstream on the other.

The Class 30s served the Treidelbahn for almost 20 years, but the creation of the Derdap drowned the railroad in 1969. By that time, two of the three remaining locomotives were scrapped in place while the third was left to be submerged. (Wikipedia says other sources report all three engines remained in place to be flooded.)

(NB: The 1955 JDZ diagram used the 49 mm internal (fire side) diameter for its tube heating surface area calculation. Thus, the THS came to199.45 sq m (2,147 sq ft), which combined with direct heating surface area to equal 214.4 sq m (2,308 sq ft). Locobase uses the external (water side diameter provided in the diagram to simplify comparisons with the Anglo-American preference for the external diameter.)

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID1716
RailroadYugoslav State (JDZ)
Number in Class40
Road Numbers30-001 to 30-040
Number Built40
Valve GearHeusinger
Locomotive Length and Weight
Driver Wheelbase (ft / m)32.32 / 9.85
Engine Wheelbase (ft / m)44.13 / 13.45
Ratio of driving wheelbase to overall engine wheelbase 0.73
Overall Wheelbase (engine & tender) (ft / m)61.35 / 18.70
Axle Loading (Maximum Weight per Axle) (lbs / kg)39,837 / 18,070
Weight on Drivers (lbs / kg)198,813 / 90,180
Engine Weight (lbs / kg)234,087 / 106,180
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)6600 / 25
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)11 / 10
Minimum weight of rail (calculated) (lb/yd / kg/m)66 / 33
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)53.10 / 1350
Boiler Pressure (psi / kPa)232.10 / 16
High Pressure Cylinders (dia x stroke) (in / mm)21.65" x 25.98" / 550x660 (3)
Tractive Effort (lbs / kg)67,865 / 30783.08
Factor of Adhesion (Weight on Drivers/Tractive Effort) 2.93
Heating Ability
Tubes (number - dia) (in / mm)156 - 2.126" / 54
Flues (number - dia) (in / mm)34 - 5.63" / 143
Flue/Tube length (ft / m)17.06 / 5.20
Firebox Area (sq ft / m2)161.46 / 15
Grate Area (sq ft / m2)53.82 / 5
Evaporative Heating Surface (sq ft / m2)2498 / 232.10
Superheating Surface (sq ft / m2)786 / 73
Combined Heating Surface (sq ft / m2)3284 / 305.10
Evaporative Heating Surface/Cylinder Volume150.44
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation12,492
Same as above plus superheater percentage15,490
Same as above but substitute firebox area for grate area46,469
Power L112,840
Power MT711.91

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