Oesterreichische Nordwestbahn 4-4-0 Locomotives in Austria
Class Details by Steve Llanso of Sweat House Media
Class IIa (Locobase 7802)
Data from [
], last accessed 27 August 2006.
This unusual set of locomotives did not ever receive kkStB designations, as they had all been retired in 1883 (6 engines) and 1887 (the other 6). As they came into service, they were named as follows: AUSTRIA, BOHEMIA, PARDUBITZ, K+NIGGR-TZ, JOSEFSTADT, ELBE, K+NIGINHOF, LIEBENAU, ISER, TURNAU, TRAUTENAU, and REICHENBERG. They were the first Austrian locomotives to be fitted with external Hall cranks.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | IIa |
| Locobase ID | 7802 |
| Railroad | Oesterreichische Nordwestbahn |
| Country | Austria |
| Whyte | 4-4-0 |
| Number in Class | 12 |
| Road Numbers | 1-12 |
| Gauge | Std |
| Number Built | 12 |
| Builder | Maffei |
| Year | 1857 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.51 / 1.68 |
| Engine Wheelbase (ft / m) | 13.41 / 4.09 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.41 |
| Overall Wheelbase (engine & tender) (ft / m) | 34.15 / 10.41 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 46,958 / 21,300 |
| Engine Weight (lbs / kg) | 71,650 / 32,500 |
| Tender Loaded Weight (lbs / kg) | 45,636 / 20,700 |
| Total Engine and Tender Weight (lbs / kg) | 117,286 / 53,200 |
| Tender Water Capacity (gals / ML) | 1320 / 5 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 39 / 19.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 63.40 / 1610 |
| Boiler Pressure (psi / kPa) | 101.50 / 700 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15.94" x 24.02" / 405x610 |
| Tractive Effort (lbs / kg) | 8305 / 3767.09 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.65 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 78.55 / 7.30 |
| Grate Area (sq ft / m2) | 12.70 / 1.18 |
| Evaporative Heating Surface (sq ft / m2) | 1029 / 95.60 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1029 / 95.60 |
| Evaporative Heating Surface/Cylinder Volume | 185.48 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1289 |
| Same as above plus superheater percentage | 1289 |
| Same as above but substitute firebox area for grate area | 7973 |
| Power L1 | 2749 |
| Power MT | 258.12 |