Yverdon a Ste Croix Articulated Locomotives in Switzerland
Class Details by Steve Llanso of Sweat House Media
Class Reine Berthe (Locobase 15619)
Data from No. 99, Societe Alsacienne de Construction Mecanique of SACM Locomotive book supplied by Dany Machi up at [
] as
Diagrammes des machines SACM construites a GRAFENSTADEN (October 2007). Works numbers were 4516-4518 in 1893.
The second and third locomotives of a standard Mallet tank design were named Olivier and Davel. The 24-km (14.9-mile railway rose 633 m (2,076 feet) from the former town, which lies on the shores of Lake Neuchatel, northwest to the latter town near the interantional border with France.
The three locomotives were later superheated and moved south in 1920 to the Lausanne-Echallens-Bercher railway in the Canton of Vaud (Lausanne lies on Lake Geneva). The 3 was withdrawn from service in 1937, followed by the 1 in 1938. The 2 served another eight years before it was retired in 1946.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | Reine Berthe |
| Locobase ID | 15619 |
| Railroad | Yverdon a Ste Croix |
| Country | Switzerland |
| Whyte | 0-4-4-0T |
| Number in Class | 3 |
| Road Numbers | 1-3 |
| Gauge | Metre |
| Number Built | 3 |
| Builder | SACM |
| Year | 1893 |
| Valve Gear | Heusinger |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 4.59 / 1.40 |
| Engine Wheelbase (ft / m) | 15.32 / 4.67 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.30 |
| Overall Wheelbase (engine & tender) (ft / m) | 15.32 / 4.67 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 74,406 / 33,750 |
| Engine Weight (lbs / kg) | 74,406 / 33,750 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 74,406 / 33,750 |
| Tender Water Capacity (gals / ML) | 977 / 3.70 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.10 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 31 / 15.50 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 39.80 / 1010 |
| Boiler Pressure (psi / kPa) | 169.70 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 11.02" x 19.69" / 280x500 |
| Low Pressure Cylinders (dia x stroke) (in / mm) | 16.73" x 19.69" / 425x500 |
| Tractive Effort (lbs / kg) | 12,088 / 5483.03 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 6.16 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | 136 - 1.614" / 41 |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 11.65 / 3.55 |
| Firebox Area (sq ft / m2) | 58.88 / 5.47 |
| Grate Area (sq ft / m2) | 10.98 / 1.02 |
| Evaporative Heating Surface (sq ft / m2) | 728 / 67.65 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 728 / 67.65 |
| Evaporative Heating Surface/Cylinder Volume | 334.92 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1863 |
| Same as above plus superheater percentage | 1863 |
| Same as above but substitute firebox area for grate area | 9992 |
| Power L1 | 2297 |
| Power MT | 272.24 |