Geneva tramway 0-4-0 Locomotives in Switzerland
Class Details by Steve Llanso of Sweat House Media
Class 858 (Locobase 7398)
Data from Titre Exposition universelle internationale de 1878 a Paris. Rapports du jury internationale..Volume Groupe VI - Classe 64. Rapport sur le materiel des chemins de fer. p. 56 (cnum.cnam.fr/CGI/fpage.cgi?8XAE277-11.1/54/100/312/0/0 (accessed 1 September 2005) table.
Also see [
] -- the Trams of Geneva website (accessed 22 Jan 2006).
The latter site tells us that this tram motor was a big hit at the 1878 Exposition and was the Geneva system's #1. The technical data differ given in the Geneva account differ to some extent. The piston diameter is given as 160 mm (6.3"), the heating surface 11.7 sq m. (126 sq ft), and the operating weight 7.7 tonnes (16,976 lb). The writer notes that the first machine was a trial horse and was later joined by 7 more motors. It is likely that the data in his account refers to those later locomotives.
Whatever the actual numbers (Locobase chooses the contemporaneous Jury values), the tramway management found that the steam tram had the same operating expenses per km as a 2-horse tram while pulling not just one but two or three trailing coaches.
By 1894, electrification of the tram network meant the retirement of these little mules.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 858 |
| Locobase ID | 7398 |
| Railroad | Geneva tramway |
| Country | Switzerland |
| Whyte | 0-4-0T |
| Number in Class | 1 |
| Road Numbers | 1 |
| Gauge | Std |
| Number Built | 1 |
| Builder | SLM |
| Year | 1877 |
| Valve Gear | Brown |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 4.92 / 1.50 |
| Engine Wheelbase (ft / m) | 4.92 / 1.50 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 4.92 / 1.50 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 13,669 / 6200 |
| Engine Weight (lbs / kg) | 13,669 / 6200 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 132 / 0.50 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.20 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 11 / 5.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 23.60 / 600 |
| Boiler Pressure (psi / kPa) | 217.60 / 1500 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 5.51" x 11.81" / 140x300 |
| Tractive Effort (lbs / kg) | 2810 / 1274.60 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.86 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 71 - 1.575" / 40 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 3.12 / 0.95 |
| Firebox Area (sq ft / m2) | 21.52 / 2 |
| Grate Area (sq ft / m2) | 2.58 / 0.24 |
| Evaporative Heating Surface (sq ft / m2) | 103 / 9.60 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 103 / 9.60 |
| Evaporative Heating Surface/Cylinder Volume | 316.02 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 561 |
| Same as above plus superheater percentage | 561 |
| Same as above but substitute firebox area for grate area | 4683 |
| Power L1 | 5530 |
| Power MT | 1783.82 |