Data from US Military Railway Service Equipment Data Book for Italian Locomotives [inter alia] supplied by Allen Stanley in May 2005 from his extensive Rail Data Exchange.
Radial tank that seems to have been a single-unit class; see [] (visited 30 June 2005). It was credited by the MRS with 10,560 lb of steam per hour and rated at 460 hp at 27 mph.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Gruppo 900 |
| Locobase ID | 6622 |
| Railroad | Ferrovie dello Stato (FS) |
| Country | Italy |
| Whyte | 0-6-2T |
| Number in Class | 1 |
| Road Numbers | 9011 |
| Gauge | Std |
| Number Built | 1 |
| Builder | |
| Year | 1889 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 10.06 / 3.07 |
| Engine Wheelbase (ft / m) | 17.23 / 5.25 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.58 |
| Overall Wheelbase (engine & tender) (ft / m) | 17.23 / 5.25 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 31,900 / 14,470 |
| Weight on Drivers (lbs / kg) | 94,160 / 42,710 |
| Engine Weight (lbs / kg) | 117,920 / 53,488 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1485 / 5.63 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 2.20 / 2 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 52 / 26 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 53.10 / 1350 |
| Boiler Pressure (psi / kPa) | 142 / 980 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 17.72" x 23.63" / 450x600 |
| Tractive Effort (lbs / kg) | 16,866 / 7650.30 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.58 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 173 - 1.969" / 50 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12.40 / 3.78 |
| Firebox Area (sq ft / m2) | 71.02 / 6.60 |
| Grate Area (sq ft / m2) | 17.11 / 1.59 |
| Evaporative Heating Surface (sq ft / m2) | 1066 / 99.07 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1066 / 99.07 |
| Evaporative Heating Surface/Cylinder Volume | 158.05 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2430 |
| Same as above plus superheater percentage | 2430 |
| Same as above but substitute firebox area for grate area | 10,085 |
| Power L1 | 2648 |
| Power MT | 186.00 |