Sudbahn Italianesche 2-4-0 Locomotives in Italy
Class Details by Steve Llanso of Sweat House Media
Class 187/119/193/459/2103/241/1391 (Locobase 20630)
Data from Ferrovie Dell' Alta Italia, Album Delle Locomotive (Torino, 1o Luglio 1876), T39. (For roster details, see Josef Pospichal's lokstatistic website at [
], last accessed 14 August 2019.) Works numbers were 790-793 and 830-835 in 1863, 848-851 in 1964.
This class essentially duplicated the earlier Koechlin locomotives described in Locobase 20629 with only a slight reduction in boiler tubes. By 1876, the entire class had boilers with thicker plates and boiler pressure reset to 8 bar (116 psi). In 1885,eight of the class survived to join the Rete Mediterraneo. Formation of the Ferro dello Stato roster in 1905 included five of the original fourteen.
The Album data show the fireside evaporative heating surface area- 98 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.
Class 187/119/193/459/2103/241/1391 (Locobase 20631)
Data from Ferrovie Dell' Alta Italia, Album Delle Locomotive (Torino, 1o Luglio 1876), T40. (For roster details, see Josef Pospichal's lokstatistic website at [], last accessed 14 August 2019.) Works numbers were 790-793 and 830-835 in 1863, 848-851 in 1964.
This class essentially duplicated the earlier Koechlin locomotives described in Locobase 20629 with only a slight reduction in boiler tubes. By 1876, the entire class had boilers with thicker plates and boiler pressure reset to 8 bar (116 psi). In 1885,eight of the class survived to join the Rete Mediterraneo. Formation of the Ferro dello Stato roster in 1905 included five of the original fourteen.
The Album data show the fireside evaporative heating surface area- 101.6 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.
| Principal Dimensions by Steve Llanso of Middle Run Media | ||
|---|---|---|
| Class | 187/119/193/459/2103/241/1391 | 187/119/193/459/2103/241/1391 |
| Locobase ID | 20630 | 20631 |
| Railroad | Sudbahn Italianesche | Sudbahn Italianesche |
| Country | Italy | Italy |
| Whyte | 2-4-0 | 2-4-0 |
| Number in Class | 14 | 70 |
| Road Numbers | 119-132/193-206/459-472/2103-2108/241-248/1391-95 | 119-132/193-206/459-472/2103-2108/241-248/1391-95 |
| Gauge | Std | Std |
| Number Built | 14 | 70 |
| Builder | Koechlin | Koechlin |
| Year | 1863 | 1863 |
| Valve Gear | Stephenson | Stephenson |
| Locomotive Length and Weight | ||
| Driver Wheelbase (ft / m) | 5.74 / 1.75 | 6.04 / 1.84 |
| Engine Wheelbase (ft / m) | 10.76 / 3.28 | 11.48 / 3.50 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.53 | 0.53 |
| Overall Wheelbase (engine & tender) (ft / m) | 34.25 / 10.44 | 30.39 / 9.26 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 22,708 / 10,300 | 25,133 / 11,400 |
| Weight on Drivers (lbs / kg) | 45,195 / 20,500 | 50,927 / 23,100 |
| Engine Weight (lbs / kg) | 65,918 / 29,900 | 73,855 / 33,500 |
| Tender Loaded Weight (lbs / kg) | 44,533 / 20,200 | 43,651 / 19,800 |
| Total Engine and Tender Weight (lbs / kg) | 110,451 / 50,100 | 117,506 / 53,300 |
| Tender Water Capacity (gals / ML) | 1848 / 7 | 1848 / 7 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.30 / 3 | 3.30 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 38 / 19 | 42 / 21 |
| Geometry Relating to Tractive Effort | ||
| Driver Diameter (in / mm) | 65.60 / 1665 | 65.60 / 1665 |
| Boiler Pressure (psi / kPa) | 101.50 / 700 | 101.50 / 700 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15.75" x 22.05" / 400x560 | 16.54" x 22.05" / 420x560 |
| Tractive Effort (lbs / kg) | 7194 / 3263.15 | 7933 / 3598.35 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 6.28 | 6.42 |
| Heating Ability | ||
| Tubes (number - dia) (in / mm) | 177 - 1.969" / 50 | 177 - 1.969" / 50 |
| Flues (number - dia) (in / mm) | ||
| Flue/Tube length (ft / m) | 12.83 / 3.91 | 13.45 / 4.10 |
| Firebox Area (sq ft / m2) | 77.50 / 7.20 | 75.35 / 7 |
| Grate Area (sq ft / m2) | 12.70 / 1.18 | 13.13 / 1.22 |
| Evaporative Heating Surface (sq ft / m2) | 1248 / 115.90 | 1303 / 121.05 |
| Superheating Surface (sq ft / m2) | ||
| Combined Heating Surface (sq ft / m2) | 1248 / 115.90 | 1303 / 121.05 |
| Evaporative Heating Surface/Cylinder Volume | 251.00 | 237.62 |
| Computations Relating to Power Output (More Information) | ||
| Robert LeMassena's Power Computation | 1289 | 1333 |
| Same as above plus superheater percentage | 1289 | 1333 |
| Same as above but substitute firebox area for grate area | 7866 | 7648 |
| Power L1 | 3650 | 3399 |
| Power MT | 356.10 | 294.28 |