Data from Jean Rudelle, "Les chemins de fer miniers de Mondalazac et Cadayrac", found at []., last accessed 16 January 2017.
Locobase includes this entry despite some missing data to celebrate the scholarship found on the website that provided the data. A limited ability to read French (let alone speak or write it!) inhibits any grand narrative. But one can say that the line in question linked the iron mines at Mondalazac with the station at Salles la Source, located 7 km (4.35 miles) away on a Paris-Orleans branch line in the Department of l'Aveyron.
Locobase can report that an early volume of the Railroad Gazette (Volume 2, 3 December 1870, p. 1870) reprinted a letter from Henry F Q d'Aligny to the United States Railroad and Mineral Register. In an article supporting narrow-gauge railroad construction, d'Aligny included a few details on the Mondalazac, mostly an incorrect statement as to its gauge.
Rudelle describes in detail a discussion on the proper gauge to adopt. That the 3 ft 7.35" (or, rather, 1.1 metre) gauge won almost certainly was a good decision.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 20146 |
| Railroad | CF miniers de Mondalazac et Cadrayac |
| Country | France |
| Whyte | 0-4-0T |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | 110 cm |
| Number Built | 1 |
| Builder | Poynot et Cie d'Anzin |
| Year | 1864 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 4.59 / 1.40 |
| Engine Wheelbase (ft / m) | 4.59 / 1.40 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 4.59 / 1.40 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 26,455 / 12,000 |
| Engine Weight (lbs / kg) | 26,455 / 12,000 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 301 / 1.14 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 22 / 11 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 39.40 / 1000 |
| Boiler Pressure (psi / kPa) | 116 / 800 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9.45" x 15.75" / 240x400 |
| Tractive Effort (lbs / kg) | 3520 / 1596.65 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 7.52 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 32.29 / 3 |
| Grate Area (sq ft / m2) | 5.27 |
| Evaporative Heating Surface (sq ft / m2) | 285 / 26.50 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 285 / 26.50 |
| Evaporative Heating Surface/Cylinder Volume | 222.91 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 611 |
| Same as above plus superheater percentage | 611 |
| Same as above but substitute firebox area for grate area | 3746 |
| Power L1 | 2660 |
| Power MT | 443.34 |