Data from digilander.libero.it/sam700/storia200.htm.
This particular entry doesn't have boiler pressure so Locobase's figure is estimated based on several contemporaneous Italian locomotives. The 240s were designed to deliver 900 hp and their superheating undoubtedly aided in offsetting the small size of the boiler. They rated at 60 km/h (38 mph) forward, 40 km/h reverse.
The site says the first 4 were from St Leonard, the next 5 from La Meuse in 1908. When the FNM - the Ferrovie Nord Milano -- took over the Monza-Molteno-Oggiono Railroad in 1912, 2 more of identical design but built by Henschel & Sohn came with the railroad.
In the 1950s, all were sold for scrap.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 240 |
| Locobase ID | 6175 |
| Railroad | FNM |
| Country | Italy |
| Whyte | 0-8-0 |
| Number in Class | 11 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 11 |
| Builder | SA Saint Leonard |
| Year | 1908 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 14.76 / 4.50 |
| Engine Wheelbase (ft / m) | 14.76 / 4.50 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 132,718 / 60,200 |
| Engine Weight (lbs / kg) | 132,718 / 60,200 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1373 / 5.20 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.70 / 2 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 55 / 27.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 52 / 1322 |
| Boiler Pressure (psi / kPa) | 159.50 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 21.65" x 23.62" / 550x600 |
| Tractive Effort (lbs / kg) | 28,865 / 13092.96 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.60 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 118.36 / 11 |
| Grate Area (sq ft / m2) | 25.82 / 2.40 |
| Evaporative Heating Surface (sq ft / m2) | 1237 / 115 |
| Superheating Surface (sq ft / m2) | 344 / 32 |
| Combined Heating Surface (sq ft / m2) | 1581 / 147 |
| Evaporative Heating Surface/Cylinder Volume | 122.91 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 4118 |
| Same as above plus superheater percentage | 5024 |
| Same as above but substitute firebox area for grate area | 23,032 |
| Power L1 | 6764 |
| Power MT | 449.44 |