Thomasz Galka's [] (23 July 2004) is the main source for data.
Galka comments: "Due to the axle arrangement, running was very smooth. Crews praised good visibility and easy access to the running gear and brakes. Fuel consumption, despite live-steam injectors of excessive output, was comparatively low." But he and Durrant 1966) note that this might have been a standard express locomotive in Poland, but they were too long for many of the existing turntables. So their principal dimensions were repeated in the Pt-31s (Locobase 1681), which, as Mikados, had shorter wheelbases. A[nthony] E[dward] Durrant, The steam loc's assessment of this class as the "most elegant of all Polish locomotives" is difficult to challenge, as photographs show these engines to have had excellent Mountain lines. Two of the three fell into Soviet hands and were not returned. The third was used by the German railway in Poland during the war and returned to Poland in 1950. It ran for another 20 years before retiring in 1970.
Principal Dimensions by Steve Llanso of Sweat House Media | |
---|---|
Class | Pu-29 |
Locobase ID | 1683 |
Railroad | Polish State Rwys |
Country | Poland |
Whyte | 4-8-2 |
Number in Class | 3 |
Road Numbers | |
Gauge | Std |
Number Built | 3 |
Builder | Cegielski |
Year | 1930 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 19.69 / 6 |
Engine Wheelbase (ft / m) | 43.31 / 13.20 |
Ratio of driving wheelbase to overall engine wheelbase | 0.45 |
Overall Wheelbase (engine & tender) (ft / m) | 69.21 / 21.10 |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 40,785 / 18,500 |
Weight on Drivers (lbs / kg) | 160,055 / 72,600 |
Engine Weight (lbs / kg) | 250,886 / 113,800 |
Tender Loaded Weight (lbs / kg) | 116,845 / 53,000 |
Total Engine and Tender Weight (lbs / kg) | 367,731 / 166,800 |
Tender Water Capacity (gals / ML) | |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 67 / 33.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 72.80 / 1850 |
Boiler Pressure (psi / kPa) | 217.60 / 15 |
High Pressure Cylinders (dia x stroke) (in / mm) | 24.8" x 27.6" / 630x701 |
Tractive Effort (lbs / kg) | 43,128 / 19562.55 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.71 |
Heating Ability | |
Tubes (number - dia) (in / mm) | |
Flues (number - dia) (in / mm) | |
Flue/Tube length (ft / m) | 21.33 / 6.50 |
Firebox Area (sq ft / m2) | 199.06 / 18.50 |
Grate Area (sq ft / m2) | 51.65 / 4.80 |
Evaporative Heating Surface (sq ft / m2) | 2480 / 230.50 |
Superheating Surface (sq ft / m2) | 934 / 86.80 |
Combined Heating Surface (sq ft / m2) | 3414 / 317.30 |
Evaporative Heating Surface/Cylinder Volume | 160.72 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 11,239 |
Same as above plus superheater percentage | 14,274 |
Same as above but substitute firebox area for grate area | 55,011 |
Power L1 | 20,329 |
Power MT | 1120.06 |