Gustav Reder (Michael Reynolds, trans), The World of Steam Locomotives (New York: Putnam, 1974), Wiener (1930) and theTitre Rapports du jury mixte internationale publies sous la dir. de S.A.I le Prince Napoleon, presidente de la commission Imperial (Paris, Impremerie Imperiale, 1856) Collation [4]-LXXVI-1574-p. -[2]; Cote CNAM 8th Xae 53 - Mots mateiere Exposition internationale (1885; Paris); Industrie - 19e siecle; Produits industriels - 19e siecle, p. 233, hosted on cnum.cnam.fr/CGI/fpage.cgi?8XAE53/320/100/1664/0/0, accessed 1 September 2005.
The "future" is what this locomotive represented to Jean Jacques Meyer, who had it built to showcase his 4-cylinder layout of two engine sets arranged face to face under a single boiler. The front set pivoted around a fixed point, the rear one followed curved guides. The design also featured one of the first uses of the Heusinger-Walschaerts radial valve gear that would come to dominate valve gear designs for the next century.
Demonstrations on various railroads in Switzerland (Jura Industrial, and Swiss Central) and Belgium (Grand Central) failed to impress and the locomotive wound up on the Charentes Railroad (SW France) where it was scrapped in 1886.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | L'Avenir |
| Locobase ID | 3596 |
| Railroad | several |
| Country | France |
| Whyte | 0-4-4-0T |
| Number in Class | 1 |
| Road Numbers | |
| Gauge | Std |
| Number Built | 1 |
| Builder | Fives-Lille |
| Year | 1868 |
| Valve Gear | Heusinger-Wals |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 9.52 / 2.90 |
| Engine Wheelbase (ft / m) | 28.90 / 8.81 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.33 |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 111,353 / 50,509 |
| Engine Weight (lbs / kg) | 111,353 / 50,509 |
| 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) | 46 / 23 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 51.20 / 1300 |
| Boiler Pressure (psi / kPa) | 145 / 1000 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 13.38" x 21.62" / 340x549 (4) |
| Tractive Effort (lbs / kg) | 18,634 / 8452.25 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.98 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 18.07 / 1.68 |
| Evaporative Heating Surface (sq ft / m2) | 1642 / 152.60 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 1642 / 152.60 |
| Evaporative Heating Surface/Cylinder Volume | 233.35 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2620 |
| Same as above plus superheater percentage | 2620 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |