StEG 0-4-6 Locomotives in Austria
Class Details by Steve Llanso of Sweat House Media
Class II / MAv 250 / kKStB 14 (Locobase 9580)
Data from [
], last accessed 28 September 2008.
Locobase 544 describes the Engerth system of augmenting adhesion by cogs driving the three axles of the tender. This class, delivered over an 8-year period, took advantage of the all-adhesion layout to increase driver diameter for greater speed.
In 1891, 37 of the class were incorporated in the Magyar -llamvasutak, the Hungarian State Railway, as MAV 250. In 1909, the absorption of all Austrian railways into the kKStB led to the 27 engines on those railways being designated as the 14 class.
All were retired by the end of World War One.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | II / MAv 250 / kKStB 14 |
| Locobase ID | 9580 |
| Railroad | StEG (kKStB) |
| Country | Austria |
| Whyte | 0-4-6T |
| Number in Class | 93 |
| Road Numbers | 178-270 |
| Gauge | Std |
| Number Built | 93 |
| Builder | StEG |
| Year | 1865 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8.64 / 2.63 |
| Engine Wheelbase (ft / m) | 27.29 / 8.32 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.32 |
| Overall Wheelbase (engine & tender) (ft / m) | 27.29 / 8.32 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 38,581 / 17,500 |
| Engine Weight (lbs / kg) | 111,554 / 50,600 |
| 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) | 32 / 16 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 62.20 / 1580 |
| Boiler Pressure (psi / kPa) | 130.50 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16.22" x 22.8" / 412x579 |
| Tractive Effort (lbs / kg) | 10,697 / 4852.08 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.61 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 86.08 / 8 |
| Grate Area (sq ft / m2) | 12.91 / 1.20 |
| Evaporative Heating Surface (sq ft / m2) | 1345 / 125 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1345 / 125 |
| Evaporative Heating Surface/Cylinder Volume | 246.67 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1685 |
| Same as above plus superheater percentage | 1685 |
| Same as above but substitute firebox area for grate area | 11,233 |
| Power L1 | 4405 |
| Power MT | 503.43 |