Oc17

CLB IIg No. 16 (StEG 1878/1885), location and date unknown. This locomotive later became kkStB 107.23 and was written off in April 1916. Source: www.commons.wikimedia.org.

Class IIg of the k. k. priv. Galizische Carl Ludwig-Bahn (CLB) numbered just six locomotives, built in 1885 by StEG as factory type 88. These were 1-2-0 engines, with outer frames and 1730 mm drivers, intended for fast passenger traffic. Contrary to earlier practice, they were not given individual names, bot solely service numbers 9, 13, 16, 17, 19 and 34 – all ‘inherited’ from older locomotives, withdrawn prior to their introduction. Following the nationalization of CLB in 1892 they were re-numbered by kkStB 721 through 726 and in 1905 re-numbered again, this time 107.21 through 26. In the kkStB service they were fitted with slightly modified boilers. They were coupled with class 34 (CLB class B) three-axle tenders.

Three examples (107.22, 107.23 and 107.25) were withdrawn between 1915 and 1916. 107.21 ended up in the USSR and its final fate is not known. The remaining two engines became Polish property and were impressed into PKP. According to LP, class designation Oc17 was probably reserved for them, but never actually assigned, as both were withdrawn before new system came into use. This is hardly surprising, as from the point of view of fast passenger traffic they were totally obsolete. Oc17 is thus just most probably another ‘class that never was’. No locomotive of this type has been preserved.

Main technical data

No.	Parameter	Unit	Value
1.	Years of manufacture	-	1885
2.	Total built / used in Poland	-	6 / 2
3.	Tender class	-
4.	Axle arrangement	-	1-2-0
5.	Design maximum speed	km/h	80
6.	Cylinder bore	mm	2 X 422
7.	Piston stroke	mm	632
8.	Engine rating	kW/hp
9.	Tractive effort	kG
10.	Boiler pressure	MPa	1.02
11.	Grate dimensions	m X m	1.86 m^2 1)
12.	Firebox heating surface	m^2	7.4^1)
13.	Distance between tube plates	mm	3 930
14.	Number of flue tubes	-	165
15.	Heating surface of flue tubes	m^2	103.9^1)
16.	Number of smoke tubes	-	-
17.	Heating surface of smoke tubes	m^2	-
18.	Evaporating surface, total	m^2	111.3^1)
19.	Superheater heating surface	m^2	-
20.	Diameter of drivers	mm	1 730
21.	Diameter of idlers front/rear	mm	1 289 / -
22.	Total weight, empty	kg	36 300
23.	Total weight, working order	kg	40 600
24.	Weight on drivers, working order	kg	27 400
25.	Weight with tender, empty	kg	47 800
26.	Weight with tender, working order	kg	71 100
27.	Maximum axle load	T	13.9
28.	Axle base (with tender)	mm	10 685
29.	Overall length (with tender)	mm
30.	Brake type	-

1) Re-boilered variant.

References and acknowledgments

- LP, KT vol. 1;

- www.de.wikipedia.org;