Data from "Societe Nouvelle des Etablissments Decauville Ain, a Petit-Bourg (Seine-et-Oise), France", p. 77.
The manufacturer claimed the engine would consume 39 litres of water per km (6.4 gallons per mile) and 5.5 kg per km (7.53 lb/mile). At that rate, the likely endurance turned out to be 27 km (16.7 miles).
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Locomotive Type No 6 |
| Locobase ID | 21263 |
| Railroad | |
| Country | France |
| Whyte | 0-4-2T |
| Number in Class | |
| Road Numbers | |
| Gauge | 60 cm |
| Number Built | |
| Builder | Decauville |
| Year | |
| Valve Gear | Decauville |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 2.95 / 0.90 |
| Engine Wheelbase (ft / m) | 6.23 / 1.90 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.47 |
| Overall Wheelbase (engine & tender) (ft / m) | 6.23 / 1.90 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 21,495 / 9750 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 269 / 1.02 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.30 / 0.28 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 23.60 / 600 |
| Boiler Pressure (psi / kPa) | 161.60 / 1100 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 8.27" x 11.81" / 210x300 |
| Tractive Effort (lbs / kg) | 4701 / 2132.34 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | - 1.614" / 41 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 4.27 / 1.30 |
| Firebox Area (sq ft / m2) | 23.68 / 2.20 |
| Grate Area (sq ft / m2) | 4.09 / 0.38 |
| Evaporative Heating Surface (sq ft / m2) | 183 / 17 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 183 / 17 |
| Evaporative Heating Surface/Cylinder Volume | 249.24 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 661 |
| Same as above plus superheater percentage | 661 |
| Same as above but substitute firebox area for grate area | 3827 |
| Power L1 | 2609 |
| Power MT | |