Polish State Rwys 2-10-2 Locomotives in Poland
Class Details by Steve Llanso of Sweat House Media
Class Okz-32 (Locobase 1688)
Data from Tomas Galka's English-language Polish locomotives website [
], last accessed 10 January 2007.
An unusual wheel arrangement for a passenger tank engine. Although they resembled the Ty-23 tender engine," the motion was completely redesigned, and the cylinders, which were smaller both in diameter and stroke, had straight ports and large-diameter piston valves." [A[nthony] E[dward] Durrant, The steam loc]. The tank engine also worked a smaller boiler at a higher pressure.
See thread in [] . The design was a success and lasted to the end of steam.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Okz-32 |
| Locobase ID | 1688 |
| Railroad | Polish State Rwys |
| Country | Poland |
| Whyte | 2-10-2T |
| Number in Class | 25 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 25 |
| Builder | Cegielski |
| Year | 1934 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 21 / 6.40 |
| Engine Wheelbase (ft / m) | 38.39 / 12.05 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.55 |
| Overall Wheelbase (engine & tender) (ft / m) | 38.39 / 12.05 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 37,479 / 17,000 |
| Weight on Drivers (lbs / kg) | 187,393 / 85,000 |
| Engine Weight (lbs / kg) | 261,027 / 118,400 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 62 / 31 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 57.10 / 1450 |
| Boiler Pressure (psi / kPa) | 217.60 / 1500 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 24.8" x 27.56" / 630x700 |
| Tractive Effort (lbs / kg) | 54,907 / 24905.43 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.41 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14.76 / 4.50 |
| Firebox Area (sq ft / m2) | 145.26 / 13.50 |
| Grate Area (sq ft / m2) | 40.89 / 3.80 |
| Evaporative Heating Surface (sq ft / m2) | 1981 / 184.10 |
| Superheating Surface (sq ft / m2) | 710 / 66 |
| Combined Heating Surface (sq ft / m2) | 2691 / 250.10 |
| Evaporative Heating Surface/Cylinder Volume | 128.57 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 8898 |
| Same as above plus superheater percentage | 11,211 |
| Same as above but substitute firebox area for grate area | 39,827 |
| Power L1 | 12,226 |
| Power MT | 719.18 |