Data from digilander.libero.it/sam700/storia200.htm. See also Wikipedia's "Locomotiva FNM 200" at [], last accessed 19 August 2019.
The Ticino bought these little engines five years before the FNM (Ferrovie Nord Milano) absorbed the railway. outside constant-lead radial valve gear actuated the valves; a layout unusual in such small locomotives at the time. The cab's windscreen curved up and over the footplate crew to an open backplate. At that point the locomotives were renumbered 201-207. They proved capable of speeds of 60 kph (37 mph) in both directions as they served the Como-Varese-Lavenoline and Saronno-Malnate lines. The FNM renumbered the 200s beginning with 201.
Relegated to switching near the major ports in the 1930s, these locomotives found a second calling pulling auto-trains like the Saronno-Tradate. Wikipedia notes that when the 200-05 was "accurately restored" in 1974, it reentered active service hauling a light train on tourist operations. As of 2019, the 200-05 was the second oldest locomotive still in use in Europe.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 200 |
| Locobase ID | 6176 |
| Railroad | SA Ferrovie del Ticino/FNM |
| Country | Italy |
| Whyte | 0-4-0T |
| Number in Class | 7 |
| Road Numbers | 200-206/201-207/200-01 to 200-07 |
| Gauge | Std |
| Number Built | 7 |
| Builder | Couillet |
| Year | 1883 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 8.53 / 2.60 |
| Engine Wheelbase (ft / m) | 8.53 / 2.60 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 21.67 / 6.61 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 61,729 / 28,000 |
| Engine Weight (lbs / kg) | 61,729 / 28,000 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 792 / 3 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.10 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 51 / 25.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 56.90 / 1446 |
| Boiler Pressure (psi / kPa) | 145 / 1000 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 12.6" x 23.62" / 320x600 |
| Tractive Effort (lbs / kg) | 8123 / 3684.54 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 7.60 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 49.50 / 4.60 |
| Grate Area (sq ft / m2) | 13.34 / 1.24 |
| Evaporative Heating Surface (sq ft / m2) | 773 / 71.80 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 773 / 71.80 |
| Evaporative Heating Surface/Cylinder Volume | 226.77 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1934 |
| Same as above plus superheater percentage | 1934 |
| Same as above but substitute firebox area for grate area | 7178 |
| Power L1 | 4117 |
| Power MT | 294.07 |