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The reference for locomotives and railcars

State Railway Company Vd

State Railway Company class 41, Imperial-Royal State Railways class 378, Hungarian State Railways TIV No. 4261 to 4269, later class 450, and Czechoslovak State Railways class 403.3

Austria-Hungary 1879 13 produced
PD

The StEG category Vd designated 13 0-8-0T tank locomotives built between 1879 and 1891 by their own factory in Vienna. Their original numbers were 1301 to 1313. Like other StEG locomotives, the French influence could clearly be seen. They had inside frames, outside cylinders and outside Stephenson valve gear. The long boiler and the short wheelbase of only 3,555 mm resulted in long overhangs. The first and fourth driving axles had 8 mm of lateral play, what led to a rigid wheelbase of only 1,185 mm. Later, the boilers were equipped with two interconnected domes. 

The first four were built for the steep Oravica-Anina line in today's Romania with inclines of up to 2.1 percent. The other nine were used as shunters in several places. In 1891, the nine locomotives on the Hungarian part of the network became MÁV TIV, later class 450. When the Austrian part of the StEG was nationalized in 1909, the four other locomotives became kkStB class 378. After World War I these became ČSD class 403.3. There they were used until 1939 and after that 403.303 came to a sugar works in Bohemia. Today it is on display in the museum in Jaroměř as the only survivor of the class.

Diagram with two interconnected domes Colaagri / CC BY-SA 4.0

Technical data

General

Built
1879-1891
Manufacturers
StEG
Wheel arrangement
0-8-0T (Eight-coupled)
Gauge
1,435 mm (Standard gauge)

Dimensions and weights

Length
9.73 m
Wheelbase
3.56 m
Empty mass
38.4 t
Service mass
50.8 t
Adhesion mass
38.4 t
Rigid wheelbase
1.19 m
Water capacity
6,000 l
Fuel capacity
2.3 t (coal)

Boiler

Grate area
1.68 m²
Firebox surface
8 m²
Tube heating surface
118.2 m²
Evaporative heating surface
126.2 m²
Total heating surface
126.2 m²

Power plant

Driver diameter
1,100 mm
Boiler pressure
9 bar
Expansion type
simple expansion
Cylinders
two, 450 x 600 mm

Power

Power source
steam
Estimated power
330 kW (449 PS)
Top speed
35 km/h
Starting effort
84.5 kN

Calculated values

Factor of adhesion
1 : 4.46
Optimal speed
24 km/h
Power-to-weight ratio
6.5 kW/t
Heating Surface Equivalent
166.2 m²
Cylinder volume/HSE
1 : 1,148.33
Adhesive weight/Total
1 : 1.32
Tractive force/Heating surface
1 : 13.98
Grate area/Heating surface
1 : 75.12
Firebox/Tube surface
1 : 14.78
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