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 This locomotive later became Pd14-7; withdrawn in 1938, it was captured by Soviet troops in September 1939 and it subsequent fate is unknown.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later developed into class 306, which featured steam superheating. 306.01 (StEG 3501/1908) remained with BBÖ and was withdrawn in 1949.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.

Pd14-3, ex kkStB 206.23 (WrN 4587/1905), location and date unknown – probably shortly after falling into German hands. Re-numbered 13 151, probably only formally, it was transferred to ÖBB and returned to PKP in April 1947, to be written off in October. Photo by Franz Kraus (source: www.pospichal.net/lokstatistik).

Side drawing of class 206; source: Triebfahrzeuge österreichischer Eisenbahnen: Dampflokomotiven BBÖ und ÖBB (see References).

KkStB 20601 (later 206.01, Wiener Neustadt 4509/1903), probably a factory photo. This locomotive remained with BBÖ and was withdrawn in 1932. Source: Die Lokomotive July 1904.

KkStB 206.09 + 56.208 (StEG 3142/1904), location unknown, 1904. After the war this locomotive remained with BBÖ and was withdrawn in 1932. Source: www.commons.wikimedia.org.

BBÖ 206.14 (BMMF 132/1904), Inzersdorf-Metzgerwerke station (now Wien-Blumental), 1937. Withdrawn in October 1939, this locomotive was used as a stationary boiler until 1958. Photo by Viktor Konschegg, source – as above.

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), ČSD (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 Stanisławów 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 m^2
12.	Firebox heating surface	m^2	13.3
13.	Distance between tube plates	mm	3900
14.	Number of flue tubes	-	219
15.	Heating surface of flue tubes	m^2	136.7
16.	Number of smoke tubes	-	-
17.	Heating surface of smoke tubes	m^2	-
18.	Evaporating surface, total	m^2	150.0
19.	Superheater heating surface	m^2	-
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.

List of vehicles can be found here.

References and acknowledgments

- http://www.beitraege.lokomotive.de/datenbank (Ingo Hütter’s database);

- TK vol. 1, EZ vol. 1, ISRSL;

- Triebfahrzeuge österreichischer Eisenbahnen: Dampflokomotiven BBÖ und ÖBB by Heribert Schröpfer (Alba, 2002).