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 59-64 in 1854.
See also Locobase 621, which has somewhat different data from an earlier Perdonnet work. Whchever version the reader chooses, both show the tall drivers that signified an express-passenger engine. These engines shared many of the same dimensions as the 158 class including the same tube count.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1/136 |
| Locobase ID | 11296 |
| Railroad | Saint-Dizier-Gray/Est |
| Country | France |
| Whyte | 2-2-2 |
| Number in Class | 6 |
| Road Numbers | 1-6/136-141 |
| Gauge | Std |
| Number Built | 6 |
| Builder | Charbonnier et Cie |
| 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) | 22,046 / 10,000 |
| Weight on Drivers (lbs / kg) | 22,046 / 10,000 |
| Engine Weight (lbs / kg) | 57,119 / 25,909 |
| 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) | 37 / 18.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 78.70 / 2000 |
| Boiler Pressure (psi / kPa) | 116 / 800 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14.96" x 22.05" / 380x560 |
| Tractive Effort (lbs / kg) | 6183 / 2804.56 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.57 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 158 - 1.85" / 47 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 9.51 / 2.90 |
| Firebox Area (sq ft / m2) | 68.24 / 6.34 |
| Grate Area (sq ft / m2) | 13.35 / 1.24 |
| Evaporative Heating Surface (sq ft / m2) | 799 / 74.24 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 799 / 74.24 |
| Evaporative Heating Surface/Cylinder Volume | 178.11 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1549 |
| Same as above plus superheater percentage | 1549 |
| Same as above but substitute firebox area for grate area | 7916 |
| Power L1 | 3867 |
| Power MT | 386.70 |