Data from Lokomotive / Locomotive: ÖBB 197.301 (ex kkStB 269.01) at [], first accessed December 2002, last on 11 February2024; [] (visited December 2002), a Czech site with an English version that discusses most of the Austrian rack locomotives; and "Eine neue Zahnradlokomotive der k.k. oesterreichischen Staatsbahnen", Die Lokomotive, Volume 10, Number 2 (February 1913), pp. 25-. (Thanks to Alexander Blessing for his 4 February 2024 email giving the proper railway name, axle loading, and the original kKStB 269 road numbers.)
Tube diameter is estimated, calculated from (total heating surface minus firebox heating surface) divided by (tube number times length).
Huge Abt-system rack locomotive with characteristic 420 mm x 450 mm (16.54 x 17.72") cylinders driving the 688-mm (27.09") rack gearing. The design responded to a 20 km (12.4 mile) section of railway that climbed at 7%. (that is, 1 metre rise for every 14 metres of length). When not using the rack system, the locomotive used its pair of "oversquare"
A profile photo shows that the six-driving axles were split into groups of three with the main rod driving the 4th axle. Photos from 2000 show that the design acquired the fan-shaped Geisl ejector stack sometime in its career.
The lok in the Austrian Steam Base owned several class IDs. First was the Erzbergbahn Eisenerz-Vordenberg, soon part of the kkStB as 269, then successor Austrian State Railways (OeBB) classed it in the 197 group. During Germany's Anschluss period (1938-1945), the engine was a Reichsbahn class 97.301.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 269 |
| Locobase ID | 4598 |
| Railroad | Erzbergbahn Eisenerz-Vordenber-EEV |
| Country | Austria |
| Whyte | 0-12-0RT |
| Number in Class | 3 |
| Road Numbers | 1-3 |
| Gauge | Std |
| Number Built | 3 |
| Builder | Floridsdorf |
| Year | 1912 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 22.31 / 6.80 |
| Engine Wheelbase (ft / m) | 22.31 / 6.80 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 22.31 / 6.80 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 32,408 / 14,700 |
| Weight on Drivers (lbs / kg) | 194,059 / 88,024 |
| Engine Weight (lbs / kg) | 194,007 / 88,000 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1848 / 7 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.10 / 2.80 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 42.10 / 1050 |
| Boiler Pressure (psi / kPa) | 188.50 / 1300 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 22.44" x 20.47" / 570x520 |
| Tractive Effort (lbs / kg) | 39,229 / 17794.00 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.95 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 237 - 2.047" / 52 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 15.91 / 4.85 |
| Firebox Area (sq ft / m2) | 123.79 / 11.50 |
| Grate Area (sq ft / m2) | 35.52 / 3.30 |
| Evaporative Heating Surface (sq ft / m2) | 2121 / 197 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 2121 / 197 |
| Evaporative Heating Surface/Cylinder Volume | 226.36 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 6696 |
| Same as above plus superheater percentage | 6696 |
| Same as above but substitute firebox area for grate area | 23,334 |
| Power L1 | 3868 |
| Power MT | |