Data from "Locomotive Engines at the Paris Exhibition", The Artizan (Vol II, 4th Series, #2), p. 25.
Locobase 683 describes the Engerth-Fink variation of the semi-articulated Engerth locomotive. The article referenced above noted that after the initial trials with the system, the engine was refashioned with a set of 3 coupled axles before the firebox and 2 behind, connected by a pivot joint. A similar joint connected the rear of the locomotive to the tender.
The reporter noted that the demands of the line on which these locomotives operated were considerable. The rails weighed only 48 lb/yd (24 kg/m), rose on an incline of 1 in 50 (2%), and curved as tightly as 360 ft radius. In fair weather, the report added, the engine could pull 120 tons. Locobase notes the small size of the grate.
Wikipedia's entry on the Engerth system notes that one of the four locomotives (these 3 and the Steyerdorf) lasted long enough to be given a class ID by the Hungarian State Railways and numbered 4270.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Krassova |
| Locobase ID | 11156 |
| Railroad | JO&S |
| Country | Austria |
| Whyte | 0-6-4-0 |
| Number in Class | 3 |
| Road Numbers | 501-502 |
| Gauge | Std |
| Number Built | 3 |
| Builder | StEG |
| Year | 1867 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 19.27 / 5.87 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 20,608 / 9348 |
| Weight on Drivers (lbs / kg) | 94,976 / 43,080 |
| Engine Weight (lbs / kg) | 94,976 / 43,080 |
| Tender Loaded Weight (lbs / kg) | 22,848 / 10,364 |
| Total Engine and Tender Weight (lbs / kg) | 117,824 / 53,444 |
| 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) | 39.40 / 1000 |
| Boiler Pressure (psi / kPa) | 104.40 / 720 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 18.1" x 24.9" / 460x630 |
| Tractive Effort (lbs / kg) | 18,373 / 8333.86 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.17 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 158 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14.50 / 4.40 |
| Firebox Area (sq ft / m2) | 78 / 7.25 |
| Grate Area (sq ft / m2) | 12.50 / 1.16 |
| Evaporative Heating Surface (sq ft / m2) | 1318 / 122.50 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1318 / 122.50 |
| Evaporative Heating Surface/Cylinder Volume | 177.74 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1305 |
| Same as above plus superheater percentage | 1305 |
| Same as above but substitute firebox area for grate area | 8143 |
| Power L1 | 1579 |
| Power MT | 183.26 |