T2A / TKh29 / Ferrum 29

 

 

T2A, first version (Fablok 408/1929), later TKh29. Location and date unknown, possibly factory photo. Collection Bogdan Pokropiński; source: PNPP.

 

 

Second version of the T2A, location and date unknown. Source: as above.

 

 

Side drawing of the first…

 

 

…and of the second version. Source: as above.

 

 

And now for something completely different: TKh29-1 drawing by Mariusz Plewka (used by permission).

 

 

 

 

Type T1A, built in small numbers by Fablok on the basis of documentation purchased from StEG in 1927, was soon developed into an improved and more powerful superheated T2A. Similar in external appearance, new locomotive featured copper firebox and piston valves, was slightly longer and lighter. The sole example of this version (Fablok 408/1929) was purchased by Kolej Elektryczna Warszawa-Młociny-Modlin (Warszawa-Młociny-Modlin Electric Railway), which already had one T1A in operation. Plans to electrify this railway in fact failed to materialize, due to the world crisis, and the line was never completed.  Normal traffic was later suspended and the line was used only by military authorities, providing a connection to the military depots located near Palmiry. Operation was entrusted to PKP and the locomotive was numbered TKh29-1. In 1939 it fell into German hands and was impressed into DRG as 89 1101. Withdrawn in May 1944, it was transferred to RAW Linz, then taken over by Austrian state railways ÖBB and finally withdrawn in November 1946.

Second version of this type appeared almost in parallel with the first one and featured modified boiler, again with steel firebox. It was slightly longer and had lower smokestack. It was commonly known as ‘Ferrum 29’. Data concerning production of this variant vary considerably, depending on source. PNPP gives ten examples built between 1929 and 1941, but only four of these are confirmed by the Fablok factory list (see References). Given the fact that two engines listed in PNPP as T1As were in fact most probably T2As, total pre-war production was six examples; this is consistent with AP, which gives combined production of T1A and T2A as twelve engines. According to PNPP, further ten examples were built between 1946 and 1948. Nine of these are confirmed by the Fablok factory list, but these locomotives were most probably T3As (also known as ‘Ferrum 47’, described under a separate entry), which had been developed from T2A, but ran on saturated steam. During overhauls, T2As were fitted with electric lighting; in some examples, vacuum brakes were replaced by air units. These locomotives remained in service with various industrial establishments until late 1970s; not a single example has been preserved.

 


Main technical data – first version (TKh29)

 

No.

Parameter

Unit

Value

1.

Years of manufacture

-

1929

2.

Total built / used in Poland

-

1 / 1

3.

Tender class

-

-

4.

Axle arrangement

-

0-3-0

5.

Design maximum speed

km/h

45

6.

Cylinder bore

mm

2 X 460

7.

Piston stroke

mm

540

8.

Engine rating

kW/hp

 331 / 450

9.

Tractive effort

kG

 9 800

10.

Boiler pressure

MPa

1.33

11.

Grate dimensions

m X m

1.73 m2

12.

Firebox heating surface

m2

13.

Distance between tube plates

mm

14.

Number of flue tubes

-

15.

Heating surface of flue tubes

m2

16.

Number of smoke tubes

-

-

17.

Heating surface of smoke tubes

m2

-

18.

Evaporating surface, total

m2

70.9

19.

Superheater heating surface

m2

18.2

20.

Diameter of drivers

mm

1 140

21.

Diameter of idlers front/rear

mm

- / -

22.

Total weight, empty

kg

33 750

23.

Total weight, working order

kg

43 250

24.

Weight on drivers, working order

kg

43 250

25.

Weight with tender, empty

kg

-

26.

Weight with tender, working order

kg

-

27.

Maximum axle load

T

14.4

28.

Axle base (with tender)

mm

3 400

29.

Overall length (with tender)

mm

9 019

30.

Brake type

-

Westinghouse

 

 

Main technical data – second version (Ferrum 29)

 

No.

Parameter

Unit

Value

1.

Years of manufacture

-

1930 – 1940

2.

Total built / used in Poland

-

6 / 61)

3.

Tender class

-

-

4.

Axle arrangement

-

0-3-0

5.

Design maximum speed

km/h

45

6.

Cylinder bore

mm

2 X 460

7.

Piston stroke

mm

540

8.

Engine rating

kW/hp

 331 / 450

9.

Tractive effort

kG

7 850

10.

Boiler pressure

MPa

1.33

11.

Grate dimensions

m X m

1.70 m2

12.

Firebox heating surface

m2

13.

Distance between tube plates

mm

14.

Number of flue tubes

-

15.

Heating surface of flue tubes

m2

16.

Number of smoke tubes

-

-

17.

Heating surface of smoke tubes

m2

-

18.

Evaporating surface, total

m2

71.4

19.

Superheater heating surface

m2

19.4

20.

Diameter of drivers

mm

1 140

21.

Diameter of idlers front/rear

mm

- / -

22.

Total weight, empty

kg

33 750

23.

Total weight, working order

kg

43 600

24.

Weight on drivers, working order

kg

43 600

25.

Weight with tender, empty

kg

-

26.

Weight with tender, working order

kg

-

27.

Maximum axle load

T

14.53

28.

Axle base (with tender)

mm

3 400

29.

Overall length (with tender)

mm

9 170

30.

Brake type

-

Vacuum2)

 

 

1)      Most probably.

2)      Some latter fitted with air brakes.

 

References and acknowledgments

 

-        PPN, PNPP, AP;

-        Fablok factory list (courtesy Attila Kirchner).