Data from Louis Figuier, Les Merveilles de la Science (Paris, Furne, Jouvet et cie, 1867), pp. 388-390
Locobase 6049 describes the general run of the Ouest's classic six-coupled tank design, but the current entry shows a larger locomotive with a bigger boiler and smaller drivers. Also, it appears to have had both a separate tender and supplementary tanks along the boiler, the latter to increase the adhesion weight for greater power.
Figuier says that these engines were adopted after the atmospheric railway system originally installed on the incline near Saint-Germain proved unsatisfactory. They were derived from the Ouest class and showed their power on the grade to a very satisfactory degree.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | unknown |
| Locobase ID | 9118 |
| Railroad | Saint-Germain |
| Country | France |
| Whyte | 0-6-0T |
| Number in Class | |
| Road Numbers | |
| Gauge | Std |
| Number Built | |
| Builder | |
| Year | 1861 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 72,752 / 33,000 |
| Engine Weight (lbs / kg) | 72,752 / 33,000 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 72,752 / 33,000 |
| Tender Water Capacity (gals / ML) | 818 / 3.10 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 3.10 / 3 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 40 / 20 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 46.10 / 1170 |
| Boiler Pressure (psi / kPa) | 130.50 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16.54" x 26.77" / 420x680 |
| Tractive Effort (lbs / kg) | 17,622 / 7993.21 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.13 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 147 - 1.772" / 45 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12.24 / 3.73 |
| Firebox Area (sq ft / m2) | 69.19 / 6.43 |
| Grate Area (sq ft / m2) | 12.05 / 1.12 |
| Evaporative Heating Surface (sq ft / m2) | 903 / 83.94 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 903 / 83.94 |
| Evaporative Heating Surface/Cylinder Volume | 135.64 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1573 |
| Same as above plus superheater percentage | 1573 |
| Same as above but substitute firebox area for grate area | 9029 |
| Power L1 | 1881 |
| Power MT | 171.00 |