Polish State Rwys 4-8-0 Locomotives in Poland
Class Details by Steve Llanso of Sweat House Media
Class Os-24 (Locobase 1686)
Data from Tomasz Galka's English-language Polish locomotives website [
], last accessed 10 January 2007.
Identical, says A[nthony] E[dward] Durrant, The steam loc, to the Austrian Sudbahn's 570s of 1915 and the Kaschau-Oderberger engines of 1916. In fact, however, the Austrian St.E.G. (Maschinenfabrik der priv. ~sterreichisch-ungarischen Staatseisenbahnen-Gesellschaft) produced these locomotives specifically to a Polish order and there were some differences.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Os-24 |
| Locobase ID | 1686 |
| Railroad | Polish State Rwys |
| Country | Poland |
| Whyte | 4-8-0 |
| Number in Class | 60 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 60 |
| Builder | Chrzanow |
| Year | 1924 |
| Valve Gear | Heusinger |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | 56.35 / 17.17 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 34,833 / 15,800 |
| Weight on Drivers (lbs / kg) | 139,332 / 63,200 |
| Engine Weight (lbs / kg) | 198,416 / 90,000 |
| Tender Loaded Weight (lbs / kg) | 120,923 / 54,850 |
| Total Engine and Tender Weight (lbs / kg) | 319,339 / 144,850 |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 58 / 29 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 68.90 / 1750 |
| Boiler Pressure (psi / kPa) | 203.10 / 1400 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 24.21" x 25.59" / 615x650 |
| Tractive Effort (lbs / kg) | 37,581 / 17046.48 |
| 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) | 17.06 / 5.20 |
| Firebox Area (sq ft / m2) | 173.24 / 16.10 |
| Grate Area (sq ft / m2) | 48.96 / 4.55 |
| Evaporative Heating Surface (sq ft / m2) | 2176 / 202.24 |
| Superheating Surface (sq ft / m2) | 812 / 75.50 |
| Combined Heating Surface (sq ft / m2) | 2988 / 277.74 |
| Evaporative Heating Surface/Cylinder Volume | 159.60 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 9944 |
| Same as above plus superheater percentage | 12,629 |
| Same as above but substitute firebox area for grate area | 44,685 |
| Power L1 | 17,705 |
| Power MT | 1120.57 |