Pd14

 

 

KkStB 206.40 (Wiener Neustadt 4620/1905). This locomotive later became Pd14-7; withdrawn in 1938, it was captured by Soviet troops in September 1939 and it subsequent fate is unknown. Factory photo (source: www.pl.wikipedia.org).

 

 

Class 206 was later developed into class 306, which featured steam superheating. 306.01 (StEG 3501/1908) remained with BBÖ and was withdrawn in 1949. Photo from my collection.

Class 206 of Austro-Hungarian state railways (KkStB) was developed from earlier class 106. Main changes were that of the boiler, which was shortened by 500 mm, which improved weight balance, and located higher above the frame. Number of flues was increased by 14, so that overall decrease of heating surface was marginal. Externally new boiler differed in having a single steam dome instead of two connected with horizontal tube, typical for many Austrian locomotives. Frame, wheelsets, running gear and steam engine were almost unchanged. Tractive effort was slightly increased, but maximum speed remained at 90 km/h. 206.03 (Wiener Neustadt 4511/1903) was initially fitted with Gölsdorf-type superheater, located under the boiler and heated directly from the firebox, which increased weight in working order by some four tones. This proved unsuccessful and was later deleted. Class 206 was further developed into class 306 with steam superheating, but only three examples of the latter were eventually built.

Locomotives of this type were built for KkStB between 1903 and 1907 by Wiener Neustadt (31), BMMF (22), StEG (fourteen) and WLF (three). Further nineteen were delivered between 1904 and 1908 to Südbahn by Wiener Neustadt (thirteen) and Budapest (six). After WWI KkStB engines were divided between newly-formed BBÖ (44), ÈSD (fifteen) and PKP (eleven). Of Austrian locomotives, 27 were withdrawn in the 1930s and seventeen taken over by DRG after Anschluss. The latter were numbered 13 151 through 167 and some were returned after the war. Czechoslovakian locomotives were classed 265.0; last survived in service until 1949. Südbahn engines went to Hungary (four, MÁV class 225) and Italy (fifteen, FS class 555, all withdrawn between 1933 and 1934).

Polish 206s were classed Pd14 in 1926. They were assigned to the Lwów and Stanis³awów regional PKP managements and operated in south-eastern Poland. Two were withdrawn before 1939. Two fell into German hands and seven (including Pd14-7, withdrawn in December 1938) were captured by the Soviets, eventually all but one becoming German booty after 1941. The fate of the Pd14-11 is not known. Five examples were returned after the war, plus one ex-MÁV 225,302, but of these only two were given new service numbers Pd14-1 and Pd14-2. These obsolete and run-down locomotives saw, however, no service and all were written off until 1950. Not a single example has been preserved.

 

 


Main technical data

 

No.

Parameter

Unit

Value

1.

Years of manufacture

-

1903 – 1908  

2.

Total built / used in Poland

-

89 / 11

3.

Tender class

-

17C11

4.

Axle arrangement

-

2-2-0

5.

Design maximum speed

km/h

90

6.

Cylinder bore

mm

500 / 760

7.

Piston stroke

mm

680

8.

Engine rating

kW/hp

710 / 965

9.

Tractive effort

kG

5 500

10.

Boiler pressure

MPa

1.33

11.

Grate dimensions

m X m

3.00 m2

12.

Firebox heating surface

m2

13.3

13.

Distance between tube plates

mm

3900

14.

Number of flue tubes

-

219

15.

Heating surface of flue tubes

m2

136.7

16.

Number of smoke tubes

-

-

17.

Heating surface of smoke tubes

m2

-

18.

Evaporating surface, total

m2

150.0

19.

Superheater heating surface

m2

-

20.

Diameter of drivers

mm

2100

21.

Diameter of idlers front/rear

mm

995 / -

22.

Total weight, empty

kg

49 000

23.

Total weight, working order

kg

54 200

24.

Weight on drivers, working order

kg

29 000

25.

Weight with tender, empty

kg

 

26.

Weight with tender, working order

kg

 

27.

Maximum axle load

T

14.5

28.

Axle base (with tender)

mm

12 994

29.

Overall length (with tender)

mm

16 545

30.

Brake type

-

Hardy

 

Note: technical data for production examples from 206.04 onwards. Prototypes differed slightly in overall weight and axle load distribution.

 

References and acknowledgments

 

-        www.lokomotive.de/lokomotivgeschichte/datenbank (Ingo Hütter’s database);

-        TK vol. 1, EZ vol. 1, ISRSL.