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Specifications
Specifications
Configuration:;
• Whyte	4-8-2
• UIC	2′D1′ h2
Gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Leading dia.	860 mm (33.86 in)
Driver dia.	1,850 mm (72.83 in)
Trailing dia.	1,200 mm (47.24 in)
Tender wheels	1,000 mm (39.37 in)
Minimum curve	150 m (492 ft 2 in)
Wheelbase:
• Engine	13.200 m (43 ft 4 in)
• Drivers	6.000 m (19 ft 8 in)
• Tender	5.600 m (18 ft 4 in)
Length	24.595 m (80 ft 8 in) (with tender)
Height	4.630 m (15 ft 2 in)
Axle load	18.5 tonnes
Loco weight	113.8 tonnes
Tender weight	68.5 tonnes
Total weight	182.3 tonnes
Tender type	32D29
Water cap.	32 m3 (1,100 cu ft)
Tender cap.	10.0 tonnes
Firebox:
• Grate area	4.95 m2 (53.3 sq ft)
Boiler pressure	15 kg/cm2 (1.47 MPa; 213 psi)
Heating surface	230.5 m2 (2,481 sq ft)
Superheater:;
• Heating area	86.8 m2 (934 sq ft)
Cylinders	Two, outside
Cylinder size	630 mm × 700 mm (24.80 in × 27.56 in)
Valve gear	Heusinger

Type and origin
Type and origin
Power type	Steam
Builder	H. Cegielski – Poznań
Build date	1931
Total produced	3

PKP Pu29
PKP Pu29
	Pt31 locomotive
Power type
Type and origin
Power type	Steam
Builder	H. Cegielski – Poznań
Build date	1931
Total produced	3
Configuration:;
Specifications
Configuration:;
• Whyte	4-8-2
• UIC	2′D1′ h2
Gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge
Leading dia.	860 mm (33.86 in)
Driver dia.	1,850 mm (72.83 in)
Trailing dia.	1,200 mm (47.24 in)
Tender wheels	1,000 mm (39.37 in)
Minimum curve	150 m (492 ft 2 in)
Wheelbase:
• Engine	13.200 m (43 ft 4 in)
• Drivers	6.000 m (19 ft 8 in)
• Tender	5.600 m (18 ft 4 in)
Length	24.595 m (80 ft 8 in) (with tender)
Height	4.630 m (15 ft 2 in)
Axle load	18.5 tonnes
Loco weight	113.8 tonnes
Tender weight	68.5 tonnes
Total weight	182.3 tonnes
Tender type	32D29
Water cap.	32 m3 (1,100 cu ft)
Tender cap.	10.0 tonnes
Firebox:
• Grate area	4.95 m2 (53.3 sq ft)
Boiler pressure	15 kg/cm2 (1.47 MPa; 213 psi)
Heating surface	230.5 m2 (2,481 sq ft)
Superheater:;
• Heating area	86.8 m2 (934 sq ft)
Cylinders	Two, outside
Cylinder size	630 mm × 700 mm (24.80 in × 27.56 in)
Valve gear	Heusinger
Maximum speed
Performance figures
Maximum speed	110 km/h (68 mph)
Power output	1,820 hp (1,360 kW)
Tractive effort	13,500 kgf (29,760 lbf)
Operators
Career
Operators	PKP
Class	Pu29
Numbers	Pu29-1 to Pu29-3
Locale	Poland
Delivered	1931
Retired	1970
Preserved	1

PKP Class Pu29 is a Polish steam locomotive of Polskie Koleje Państwowe, designed for hauling heavy long-distance passenger trains, built in 1931. The designation stood for fast passenger (P) 4-8-2 (u) steam locomotive accepted in 1929.

The locomotive was designed and constructed by H. Cegielski in Poznań. In late 1920s Polish Ministry of Transport ordered two classes of fast passenger locomotives to haul heavy trains in Polish factories, to compare their merits.^[1] The design by H. Cegielski was accepted in 1929 as Pu29, and three prototypes were built in 1931 (factory numbers: 198-200). The design was successful, but lost in competition to more compact 2-8-2 Pt31 by Fablok, which better suited Polish turntables, and no further orders followed.^[1]

The three locomotives served in PKP as Pu29 class, hauling mostly transit trains between Germany and East Prussia.^[1] A maximum speed was 110 km/h (68 mph), which could be achieved with 760 tonnes (750 long tons; 840 short tons) train. It could also haul the train of 818 tonnes (810 long tons; 900 short tons) with speed up to 105 km/h (65 mph).^[1]

During World War II, two locomotives were captured by the Germans and impressed into service as DRG class 12², with numbers 201 and 202.^[1] The latter locomotive was scrapped in West Germany in 1952.^[1] Pu29-2 was captured by the Soviets in Poland in 1939 and converted to broad gauge by 1941, transliterated as ПУ-29 class.^[1] Possibly it worked until 1958.^[1]

After World War II, Poland reclaimed one locomotive 12.201, former Pu29-3. At first it was mistakenly counted as Pt31-46, and from 1950 as Pu29-1.^[1] It served until 1970, then avoided scrapping, and finally was preserved in Warsaw Railway Museum.^[1]

References

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Pokropiński 2007, p. 92-94.

Pokropiński, Bogdan (2007). Parowozy normalnotorowe produkcji polskiej [Normal gauge steam locomotives of Polish manufacture] (in Polish). Warsaw: Wydawnictwa Komunikacji i Łączności. pp. 96–106, 254. ISBN 978-83-206-1617-0.