Polish State 0-8-0 Locomotives in Poland
Class Details by Steve Llanso of Sweat House Media
Class Px 48/Px49 (Locobase 5155)
[
] (August 2002). This design had been created during World War II, but series production only began in 1949. The two classes were distinguished by their tenders, the Px48 pulling one with two bogies, the Px49 using a 3-axle version. Other changes from the pre-war design included a more sheltered footplate and enlargement of the heating surfaces and the grate.
Although built to the 750 mm gauge, 17 were modified in 1969-1974 by ZNTK Nowy Its in Czechoslovakia to run on the metre gauge. And 10 went to Romania as CFR 764.050-059.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Px 48/Px49 |
| Locobase ID | 5155 |
| Railroad | Polish State |
| Country | Poland |
| Whyte | 0-8-0 |
| Number in Class | 214 |
| Road Numbers | |
| Gauge | 75 cm |
| Number Built | 214 |
| Builder | Chrzanow |
| Year | 1949 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.51 / 2.90 |
| Engine Wheelbase (ft / m) | 9.51 / 2.90 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 26.25 / 8 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 12,236 / 5550 |
| Weight on Drivers (lbs / kg) | 48,061 / 21,800 |
| Engine Weight (lbs / kg) | 48,061 / 21,800 |
| Tender Loaded Weight (lbs / kg) | 44,533 / 20,200 |
| Total Engine and Tender Weight (lbs / kg) | 92,594 / 42,000 |
| Tender Water Capacity (gals / ML) | 1584 / 6 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 4.40 / 4 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 20 / 10 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 29.50 / 750 |
| Boiler Pressure (psi / kPa) | 188.50 / 1300 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12.6" x 14.17" / 320x360 |
| Tractive Effort (lbs / kg) | 12,219 / 5542.45 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.93 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 12.34 / 1.15 |
| Evaporative Heating Surface (sq ft / m2) | 435 / 40.43 |
| Superheating Surface (sq ft / m2) | 144 / 13.38 |
| Combined Heating Surface (sq ft / m2) | 579 / 53.81 |
| Evaporative Heating Surface/Cylinder Volume | 212.72 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2326 |
| Same as above plus superheater percentage | 2908 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |