Midi 0-4-0 Locomotives in France
Class Details by Steve Llanso of Sweat House Media
Class 401 (Locobase 11321)
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. 528-529. Supplemented by Wikimedia at [
], last accessed 22 September 2018.
Little four-coupled terminal switcher with a higher axle loading than any other contemporary Midi class.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 401 |
| Locobase ID | 11321 |
| Railroad | Midi |
| Country | France |
| Whyte | 0-4-0T |
| Number in Class | |
| Road Numbers | 401-406 |
| Gauge | Std |
| Number Built | |
| Builder | Gouin |
| Year | 1855 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.87 / 2.40 |
| Engine Wheelbase (ft / m) | 7.87 / 2.40 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 7.87 / 2.40 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 31,967 / 14,500 |
| Weight on Drivers (lbs / kg) | 55,556 / 25,200 |
| Engine Weight (lbs / kg) | 55,556 / 25,200 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | / 2.30 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 46 / 23 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 47.60 / 1210 |
| Boiler Pressure (psi / kPa) | 98.60 / 680 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 15.75" x 18.11" / 400x460 |
| Tractive Effort (lbs / kg) | 7910 / 3587.92 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 7.02 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 125 - 1.811" / 46 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 10.20 / 3.11 |
| Firebox Area (sq ft / m2) | 55.33 / 5.14 |
| Grate Area (sq ft / m2) | 9.26 / 0.86 |
| Evaporative Heating Surface (sq ft / m2) | 659 / 61.26 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 659 / 61.26 |
| Evaporative Heating Surface/Cylinder Volume | 161.37 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 913 |
| Same as above plus superheater percentage | 913 |
| Same as above but substitute firebox area for grate area | 5456 |
| Power L1 | 1792 |
| Power MT | 142.22 |