Data from Ferrovie Dell' Alta Italia, Album Delle Locomotive (Torino, 1o Luglio 1876), T50. Works numbers were 43-44 in 1846, 58-59 in 1847,
This Austrian design's profile offered several noticeable features. The big balloon stack wasn't particularly unusual, but the slender column that was the dome may have been unique. Likewise, each of the spring hangers over the drivers had a row downward-facing teeth. Locobase hasn't seen anything like it and can't really hazard a guess, other than to suppose it helped stabilize the big equalizing beam over the rear two drivers on each side and the smaller one over the lead axle. Yet another oddity are the two pipes linking the top of the steam chest with the smokebox. Again, Locobase can't tell why that particular arrangement might have been used.
The Album data show the fireside evaporative heating surface area--105.0 sq m--which was approximately 15% too low when compared to the sum of firebox heating surface area and the calculated tube heating surface area including the tubes' external (water side) diameter. Locobase's specifications adjust the EHS to reflect the higher value.
Not long after its original railway merged into the Alta Italia, the SFAI scrapped this foursome in 1872-1874.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 797/130/801 |
| Locobase ID | 20665 |
| Railroad | Sudbahn Italianesche |
| Country | Italy |
| Whyte | 0-6-0 |
| Number in Class | 4 |
| Road Numbers | 797-800/130-133/800-804 |
| Gauge | Std |
| Number Built | 4 |
| Builder | Haswell |
| Year | 1846 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.80 / 3.29 |
| Engine Wheelbase (ft / m) | 10.80 / 3.29 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 32.85 / 10.01 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 22,928 / 10,400 |
| Weight on Drivers (lbs / kg) | 67,241 / 30,500 |
| Engine Weight (lbs / kg) | 67,241 / 30,500 |
| Tender Loaded Weight (lbs / kg) | 46,958 / 21,300 |
| Total Engine and Tender Weight (lbs / kg) | 114,199 / 51,800 |
| Tender Water Capacity (gals / ML) | 1980 / 7.50 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.30 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 37 / 18.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 56 / 1422 |
| Boiler Pressure (psi / kPa) | 94.30 / 650 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.13" x 22.83" / 435x580 |
| Tractive Effort (lbs / kg) | 9589 / 4349.50 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 7.01 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 176 - 2.047" / 52 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 14.07 / 4.29 |
| Firebox Area (sq ft / m2) | 75.35 / 7 |
| Grate Area (sq ft / m2) | 13.99 / 1.30 |
| Evaporative Heating Surface (sq ft / m2) | 1402 / 130.25 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1402 / 130.25 |
| Evaporative Heating Surface/Cylinder Volume | 230.22 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1319 |
| Same as above plus superheater percentage | 1319 |
| Same as above but substitute firebox area for grate area | 7106 |
| Power L1 | 2571 |
| Power MT | 252.88 |