PKP class Pm36

4 ft 8+1⁄2 in) standard gaugeLeading dia.950 mm (37.40 in)Driver dia.2,000 mm (78.74 in)Trailing dia.1,150 mm (45.28 in)Length24.843 m (81 ft 6 in)Axle load17.2 tonnes (16.9 long tons; 19.0 short tons)Adhesive weight51.6 tonnes (50.8 long tons; 56.9 short tons)Loco weight94.0 tonnes (92.5 long tons; 103.6 short tons)Tender weight72.9 tonnes (71.7 long tons; 80.4 short tons)Tender cap.9.0 tonnes (8.9 long tons; 9.9 short tons)Firebox:​ • Grate area3.85 m² (41.4 sq ft)Boiler pressure18 kg/cm² (1.77 MPa; 256 psi)Heating surface:​ • Firebox15.00 m² (161.5 sq ft) • Total surface198.0 m² (2,131 sq ft)Superheater:
​ • Heating area71.2 m² (766 sq ft)CylindersTwo, outsideCylinder size530 mm × 700 mm (20.87 in × 27.56 in)Valve gearHeusinger (Walschaerts)Loco brakeWestinghouse

Performance figures
Maximum speed	Pm36-1: 140 km/h (87 mph) Pm36-2: 130 km/h (81 mph)
Power output	1,325 kW (1,780 hp)
Tractive effort	147.5 kN (33,160 lbf)

Career
Operators	PKP » DRB » PKP
Class	PKP: Pm36 DRB: 186
Numbers	PKP: Pm36-1 to Pm36-2 DRB: 18 601 to 18 602
Nicknames	Piękna Helena
Locale	Poland
Retired	1965
Restored	1995
Current owner	PKP

PKP class Pm36 is a class of two express passenger (P) 4-6-2 (m) steam locomotives ordered in 1936 for the Polskie Koleje Państwowe (Polish State Railways).

History

Design

The design was ready in 1936 and the following year the first two prototypes were built. One of them (Pm36-1) had aerodynamic fairing. The construction as well as the shape of it was designed by inz. Kazimierz Zembrzuski, head of the design office in the First Polish Factory of Locomotives and at the same time professor of the Warsaw University of Technology. The other (Pm36-2) had a standard look. The idea was to test both engines in parallel to compare top speed, acceleration, coal and water consumption etc. The Pm36-1 won a gold medal at the 1937 International Exposition of Art and Technology in Paris.

Service

After the German occupation of Poland during World War II, the two locomotives were renumbered into the Deutsche Reichsbahn (DRB) fleet as 18 601 and 18 602 (class 18⁶). The 18 601 had its streamlining removed,^[1] but was later damaged and subsequently scrapped (probably in 1942). The 18 602 survived the war, and was returned to Poland where it regained its PKP class and number. It continued to work for PKP until 1965, when it was given to the Warsaw Railway Museum.

Present day

In 1995 the machine went through a major overhaul and is now working in Wolsztyn as a tourist attraction, called Beautiful Helen (pl. Piękna Helena). It is occasionally used in regular service, pulling trains to Poznań^[2] or Leszno.^[3] Currently Beautiful Helen waits for repair in Wolsztyn.^[4]

Gallery

• 
  Pm36 with aerodynamic fairing, World Expo 1937
• 
  Pm36 model with aerodynamic fairing, World Expo 1939

See also

• PKP classification system

Notes

References

Diesel

Standard gauge	SM01 SM02 SM03 SM04 SM15 SM25 SM30 SP30 SM31 SP32 SM40 ST40 SM41 SM42 SP42 SU42 ST43 ST44 SP45 ST45 SU45 SU46 SP47 SM48 ST48 SU160
Narrow gauge	Ld1 Lyd1 Lyd2 Lxd2

ElectricSteam

Standard gauge*	Ok22 OKl27 OKz32 Ol49 Os24 Pm36 Pt31 Pt47 Pu29 TKh49 TKt48 Tr21 Ty23 Ty37 Ty42 Ty43 Ty45 Ty51 Ty246
Standard gauge**	Od2 Oi1 Oi2 Ok1 OKi1 OKi2 OKl2 OKl12 OKo1 Ol12 Ot1 Pd1 Pd4 Pd5 Pf1 Pf12 Pk1 Pk2 Pm2 Pm3 Pn12 Pt1 Th1 Th3 Th24 Ti1 Ti2 Ti4 Ti11 Ti12 Ti16 Ti17 TKh1 TKh2 TKi1 TKi3 TKp1 TKp11 TKp101 TKt1 TKt2 TKt3 TKw1 TKw2 Tp1 Tp2 Tp3 Tp4 Tp15 Tp102/104 Tr1 Tr5 Tr6 Tr11 Tr12 Tr20 Tr201/203 Tr202 Tw1 Tw12 Ty1 Ty2 Ty3 Ty4 Ty5
Narrow gauge	Px27 Px29 Px38 Px48 Px49 T49 Tw47 Tw53 Tx23 Tx26

Multiple units

Electric	14WE/EN61 19WE 33WE 35WE 36WE EW51 EW52 EW53 EW54 EW55 EN56 EN57 EW58 ED59 EW60 EN62/EN76/EN96 ED70 EN71 ED72 ED73 ED74 EN75/ER75/ED160 EN77 ED78 EN80 EN81 EW90 EW91 EW92 EN94 EN95 EN97 EN100 ED161 ED250
Diesel	222M 810** MR/MRD** SN51 SN52 SN60 SN61 SD80** SN80 SN81 SN82** SN83** SN84** SD85** SA101 SA102 SA103 SA104 SA105 SA106 SA107 SA108 SA109 SA110 SA131 SA132 SA133 SA134 SA135 SA136 SA137 SA138 SA139 VT627**

Metro cars