Data from August Perdonnet et Camille Polonceau, Nouveau Portefeuille de L'Ingenieur des Chemins de Fer, Tome Second (Paris: Librairie Scientifique, Industrielle et Agricole, 1866), pp. 524. Works numbers were 40-50 in 1854.
See also Locobase 621, which has somewhat different data from an earlier Perdonnet work. These engines together with the classes shown in Locobases 11296-11297, all came from the same manufacturer and varied primariliy in th size of their boilers.
But the 41s were meant for local passenger service as they turned smaller drivers that suited slower trains making more stops.
Like the 136 class, most or all of this class were gone by 1884.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 41 |
| Locobase ID | 11298 |
| Railroad | Paris-Strasbourg/Est |
| Country | France |
| Whyte | 2-2-2 |
| Number in Class | 10 |
| Road Numbers | 41-50 |
| Gauge | Std |
| Number Built | 10 |
| Builder | Cave |
| Year | 1854 |
| Valve Gear | Stephenson |
| 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) | 21,332 / 9676 |
| Weight on Drivers (lbs / kg) | 21,332 / 9676 |
| Engine Weight (lbs / kg) | 49,018 / 22,234 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 36 / 18 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 70.90 / 1800 |
| Boiler Pressure (psi / kPa) | 116 / 800 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14.96" x 22.05" / 380x560 |
| Tractive Effort (lbs / kg) | 6863 / 3113.01 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.11 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.10 / 3.08 |
| Firebox Area (sq ft / m2) | 71.23 / 6.62 |
| Grate Area (sq ft / m2) | 12.37 / 1.15 |
| Evaporative Heating Surface (sq ft / m2) | 800 / 74.39 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 800 / 74.39 |
| Evaporative Heating Surface/Cylinder Volume | 178.34 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1435 |
| Same as above plus superheater percentage | 1435 |
| Same as above but substitute firebox area for grate area | 8263 |
| Power L1 | 3533 |
| Power MT | 365.13 |