kkStB Class 429

kkStB 429/429.1 / SB 429 BBÖ 429/429.1 / ČSD 354.7 / FS 688 / JDŽ 106 / PKP Ol12 / MÁV 323.9 DRB 35.3 ÖBB 35 / ÖBB 135
File:Ol12-7 Chabówka (Nemo5576) 1.jpg
Number(s)	kkStB 429.01–57 kkStB 429.100–225 SB 429.01–06 BBÖ 429.03–57 (with gaps) BBÖ 429.103–224 ČSD 354.701–784 FS 688.001–002 JDŽ 106-001–002 PKP Ol12-1–45, 84 MÁV 323.907 DRB 35 301–346 ÖBB 35.242 ÖBB 135.312–346 (with gaps)
Quantity	283
Manufacturer	StEG, Wr. Neustadt, Floridsdorf
Year(s) of manufacture	1909–1916
Wheel arrangement	2-6-2
Axle arrangement	1'C1' h2v
Gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge
Height
Overall wheelbase
Wheelbase incl. tender
Empty weight	55.1 t (54.2 long tons; 60.7 short tons)
Service weight	61.2 t (60.2 long tons; 67.5 short tons)
Adhesive weight	43.0 t (42.3 long tons; 47.4 short tons)
Top speed	80 km/h (50 mph)
Driving wheel diameter	1,614 mm (63.54 in)
Leading wheel diameter	870 mm (34.25 in)
Trailing wheel diameter	870 mm (34.25 in)
No. of cylinders	2
LP cylinder bore	690 mm (27.17 in)
HP cylinder bore	475 mm (18.70 in)
Piston stroke	720 mm (28.35 in)
Boiler Overpressure	15 atm (1,520 kPa; 220 psi)
No. of heating tubes	170
Grate area	3.00 m2 (32.3 sq ft)
Radiative heating area	14.20 m2 (152.8 sq ft)
Tube heating area	85.60 m2 (921.4 sq ft)
Superheater area	28.25 m2 (304.1 sq ft)
Tender	kkStB tender classes 9, 56, 156, 256, 76, 86, 88

kkStB 429.9 BBÖ 429.9 / ČSD 354.7 / FS 688 / JDŽ 106 / PKP Ol12 DRB 35.2 ÖBB 35
Number(s)	kkStB 429.900–999, 1900–1996 BBÖ 429.902–995, 1926–1987, 1997  (with gaps) ČSD 354.785–7152 FS 688.003–028 JDŽ 106-003 PKP Ol12-46–83, 85–106 DR 35 201–241 ÖBB 35.201–241 (with gaps)
Quantity	197
Manufacturer	Floridsdorf, BMMF, Wr. Neustadt, StEG
Year(s) of manufacture	1911–1918
Wheel arrangement	2-6-2
Axle arrangement	1'C1' h2
Gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge
Length
Height
Overall wheelbase
Wheelbase incl. tender
Empty weight	55.1 t (54.2 long tons; 60.7 short tons)
Service weight	61.2 t (60.2 long tons; 67.5 short tons)
Adhesive weight	43.0 t (42.3 long tons; 47.4 short tons)
Top speed	80 km/h (50 mph)
Driving wheel diameter	1,614 mm (63.54 in)
Leading wheel diameter	870 mm (34.25 in)
Trailing wheel diameter	870 mm (34.25 in)
No. of cylinders	2
Cylinder bore	475 mm (18.70 in)
Piston stroke	720 mm (28.35 in)
Boiler Overpressure	15 atm (1,520 kPa; 220 psi)
No. of heating tubes	170
Grate area	3.00 m2 (32.3 sq ft)
Radiative heating area	14.20 m2 (152.8 sq ft)
Tube heating area	85.60 m2 (921.4 sq ft)
Superheater area	28.25 m2 (304.1 sq ft)
Tender	kkStB tender classes 9, 56, 156, 256, 76, 86, 88

The steam locomotive class kkStB 429 was a class of passenger locomotive operated by the Imperial Austrian State Railways (Kaiserlich-königliche österreichische Staatsbahnen), kkStB.

As Wilhelm Schmidt's superheater went into series production, Karl Gölsdorf modified the Class 329 into the superheated variant 429. The smokebox was lengthened, the boiler barrel reduced accordingly, high-pressure cylinders were given piston valves, the low-pressure cylinders slide valves. The Lokomotivfabrik Floridsdorf, the Wiener Neustädter Lokomotivfabrik and the Lokomotivfabrik der StEG delivered 57 units (429.01–57) to the kkStB.

In spite of the small superheater area, problems arose with the slide valves on the low-pressure side. As a result, the following 126 engines were supplied with piston valves on both sides (429.100–225). At the same time a two-cylinder variant with piston valves was tried, of which in the end 197 units were procured by the kkStB (429.900–999 and 429.1900–1996).

The Austrian Southern Railway procured six compound locomotives (with piston valves), that were numbered 429.01–06.

The 429s were employed for all duties and with good coal generated up to 1,200 PS (883 kW; 1,184 hp). They were to be found in almost all parts of the Danube Monarchy.

After the First World War the former 429s became Class 354.7 with the ČSD, Class Ol12 in the PKP, Class 106 in the JDŽ, Class 688 in the FS and were also used by the Romanian State Railways retaining their original numbers. A total of 87 units (46 compound, 41 two-cylinder locomotives) remained in the BBÖ.

In 1939 the Deutsche Reichsbahn (DRB) reclassified the two-cylinder engines as 35 201–241 and the compounds as 35 301–346. During the course of the war, several locomotives from the ČSD and JDŽ ended up in the DRB. After the Second World War 46 two-cylinder machines were left in the ÖBB and became their Class 35, as well as 39 compound engines which became Class 135. The serial numbers were not changed from those allocated by the DRB.

ČSD Class 354.7

The ČSD in Czechoslovakia converted all its compound locomotives (27 of the first series, 57 of the second) into two-cylinder engines. Together with the 68  two-cylinder machines taken over, they therefore had over 152 examples of Class 354.7. With the exception of one engine, all the locomotives were give a second steam dome with a connecting pipe. The ČSD did not withdraw Class 354.7 engines from its fleet until 1967.

External links

• Pospichal locomotive statistics
• There is a relevant English-language forum at Railways of Germany