Pithiviers a Toury 0-4-2 Locomotives in France
Class Details by Steve Llanso of Sweat House Media
Class La France (Locobase 9433)
Data from G Humbert, Traite des Chemins de Fer d'Interet Local (Paris: Ch Beranger, 1893) , p. 270-273 and and F Lievin & H Heude, Tramway a vapeur a voie de 0.60"m de Pithiviers a Toury (Paris: Baudry, 1894), pp.13-14. (Thanks to Wes Barris of steamlocomotive.com for his 13 June 2018 email noting a missing cylinder count.)
These very-narrow-gauge engines were designed for the agricultural lines that proliferated in France in the late 19th Century. The Pithiviers line used two of the four-coupled radial tanks shown here; Decauville's larger radial tank is shown in Locobase 9434.
The summary of motive power shown on the [
] (accessed 10 May 2008) notes that the first one of the class was built by Weidknecht for Decauville. Locobase suspects that the other three (Decauville works 176, 184, & 189) were similar.
Although Humbert suggested the small drivers would limit speeds to 16-18 km/h (10-11 mph), Lievin & Heude claimed the invigorating rate of 27-28 km/h (16.75-17 mph) under the right conditions.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | La France |
| Locobase ID | 9433 |
| Railroad | Pithiviers a Toury |
| Country | France |
| Whyte | 0-4-2T |
| Number in Class | 2 |
| Road Numbers | |
| Gauge | 60 cm |
| Number Built | 2 |
| Builder | Decauville |
| Year | 1892 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 6.40 / 1.95 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | 6.40 / 1.95 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 14,892 / 6755 |
| Engine Weight (lbs / kg) | 19,180 / 8700 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 422 / 1.60 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.70 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 12 / 6 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 23.60 / 599 |
| Boiler Pressure (psi / kPa) | 145 / 1000 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 6.89" x 11.81" / 175x300 |
| Tractive Effort (lbs / kg) | 2928 / 1328.12 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.09 |
| 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) | 18.30 / 1.70 |
| Grate Area (sq ft / m2) | 3.12 / 0.29 |
| Evaporative Heating Surface (sq ft / m2) | 142 / 13.20 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 142 / 13.20 |
| Evaporative Heating Surface/Cylinder Volume | 278.63 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 452 |
| Same as above plus superheater percentage | 452 |
| Same as above but substitute firebox area for grate area | 2654 |
| Power L1 | 2613 |
| Power MT | 773.66 |