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.
The Jury's report explains that this little locomotive was designed for "service de pilotage" , which either refers to an engine sent out ahead of trains to assure the safety of the line or one that couples to a road engine for helper service. In any case, the sole difference between the locomotive displayed and those suburban locomotives already in service on the Ouest (most likely the 2-4-0T Bicyclettes, Locobase 6048), according to the Jury, was the addition of a 4th axle to allow a larger bunker and thus longer runs between refuellings.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 58 |
| Locobase ID | 7375 |
| Railroad | Ouest |
| Country | France |
| Whyte | 2-4-2T |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 1 |
| Builder | Fives-Lille |
| Year | 1878 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 5.71 / 1.74 |
| Engine Wheelbase (ft / m) | 16.73 / 5.10 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.34 |
| Overall Wheelbase (engine & tender) (ft / m) | 16.73 / 5.10 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 54,234 / 24,600 |
| Engine Weight (lbs / kg) | 97,885 / 44,400 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1716 / 6.50 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.70 / 2 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 45 / 22.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 65 / 1650 |
| Boiler Pressure (psi / kPa) | 123.30 / 850 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16.54" x 22.05" / 420x560 |
| Tractive Effort (lbs / kg) | 9726 / 4411.64 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.58 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 149 - 1.969" / 50 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 13.12 / 4 |
| Firebox Area (sq ft / m2) | 64.99 / 6.04 |
| Grate Area (sq ft / m2) | 14.74 / 1.37 |
| Evaporative Heating Surface (sq ft / m2) | 1072 / 99.66 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1072 / 99.66 |
| Evaporative Heating Surface/Cylinder Volume | 195.50 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1817 |
| Same as above plus superheater percentage | 1817 |
| Same as above but substitute firebox area for grate area | 8013 |
| Power L1 | 3403 |
| Power MT | 276.66 |