Data from Titre Exposition universelle internationale de 1878 a Paris. Rapports du jury internationale..Volume Groupe VI - Classe 64. Rapport sur le materiel des chemins de fer. p. 50 (cnum.cnam.fr/CGI/fpage.cgi?8XAE277-11.1/54/100/312/0/0 (accessed 1 September 2005) table and page 91. Also see Reports of the United States Commissioners to the Paris Universal Exposition , 1878, pp.434-435, which has a different cylinder size (400 mm) and less tube surface area (82 sq m vs 86.3 sq m shown here).
This little engine was intended for local passenger service on a line that envisioned speeds of 40-45 km/h (25-28 mph). Its front axle was given 20 mm (4/5") of play to help negotiate tight curves. A Belpaire firebox led a boiler whose tubes were, the Jury noted, were relatively short, but which still provided plenty of heating surface because of their number.
See Locobase 13432 for the same engines as updated in 1884.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 7376 |
| Railroad | Dombes |
| Country | France |
| Whyte | 2-4-0T |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 1 |
| Builder | Schneider-Creusot |
| Year | 1878 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 12.80 / 3.90 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | 12.80 / 3.90 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 51,500 / 23,360 |
| Engine Weight (lbs / kg) | 78,484 / 35,600 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 78,484 / 35,600 |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 43 / 21.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 63.40 / 1610 |
| Boiler Pressure (psi / kPa) | 130.50 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16.14" x 23.62" / 410x600 |
| Tractive Effort (lbs / kg) | 10,765 / 4882.93 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.78 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 181 - 1.811" / 46 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.83 / 3.30 |
| Firebox Area (sq ft / m2) | 79.62 / 7.40 |
| Grate Area (sq ft / m2) | 18.83 / 1.75 |
| Evaporative Heating Surface (sq ft / m2) | 1008 / 93.71 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1008 / 93.71 |
| Evaporative Heating Surface/Cylinder Volume | 180.22 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2457 |
| Same as above plus superheater percentage | 2457 |
| Same as above but substitute firebox area for grate area | 10,390 |
| Power L1 | 3467 |
| Power MT | 296.83 |