Data from E L Ahrons, M I Mech. E, "Early English Express Engines in Italy", The Locomotive Magazine, Vol XV (15 September 1909), p. 174.
When made over by the SFAI, the Sharp, Stewarts that had started out in Sardinia (Locobase 10730) were given Belpaire fireboxes with greater area than the earlier design but fewer boiler tubes. They retained the oddly dimensioned auxiliary wheels.
Two remained in service in 1908 on the FS.
NB: Tube length was derived from subtracting the given direct heating surface area from the total for the tube area and calculating the tube length required for that area when given the tube count and exterior diameter.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 524 |
| Locobase ID | 10732 |
| Railroad | Rete Mediterraneo |
| Country | Italy |
| Whyte | 2-2-2 |
| Number in Class | 15 |
| Road Numbers | 524-538 |
| Gauge | Std |
| Number Built | 15 |
| Builder | SFAI |
| Year | 1885 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 61,600 / 27,941 |
| 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) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 78 / 1981 |
| Boiler Pressure (psi / kPa) | 100 / 690 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 20" / 406x508 |
| Tractive Effort (lbs / kg) | 5579 / 2530.59 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 181 - 2" / 51 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9 / 2.74 |
| Firebox Area (sq ft / m2) | 100 / 9.29 |
| Grate Area (sq ft / m2) | |
| Evaporative Heating Surface (sq ft / m2) | 952 / 88.44 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 952 / 88.44 |
| Evaporative Heating Surface/Cylinder Volume | 204.55 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | |
| Same as above plus superheater percentage | |
| Same as above but substitute firebox area for grate area | 10,000 |
| Power L1 | 4056 |
| Power MT | |