Rondez 0-4-0 Locomotives in Switzerland
Class Details by Steve Llanso of Sweat House Media
Class E 2/2 (Locobase 6393)
Data from [
] Works numbers were 1267 & 1670, respectively, for locomotives procured in 1900 and 1905.
Locobase 5115 describes the Brownian double-lever drive that operated the valves on some small tank locomotives. The advantage, as noted in the earlier entry, seems to have lay in raising the cylinders out of the way without having to locate them inside.
Whatever its peculiarities, the design seems to have been well suited to Swiss industrial switching. Both operated in that role until 1996 (more than 90 years!). In 2000, the Swiss preservation group La Traction bought both, but with the expiration of the boiler certificates on the pair, sold them in 2002.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | E 2/2 |
| Locobase ID | 6393 |
| Railroad | Rondez |
| Country | Switzerland |
| Whyte | 0-4-0T |
| Number in Class | 2 |
| Road Numbers | 4-5 |
| Gauge | Std |
| Number Built | 2 |
| Builder | SLM |
| Year | 1900 |
| Valve Gear | Brown |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 7.22 / 2.20 |
| Engine Wheelbase (ft / m) | 7.22 / 2.20 |
| Ratio of driving wheelbase to overall engine wheelbase | 1 |
| Overall Wheelbase (engine & tender) (ft / m) | 7.22 / 2.20 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 48,061 / 21,800 |
| Engine Weight (lbs / kg) | 48,061 / 21,800 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 48,061 / 21,800 |
| Tender Water Capacity (gals / ML) | 718 / 2.72 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.70 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 40 / 20 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 35.40 / 900 |
| Boiler Pressure (psi / kPa) | 174 / 1200 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 10.63" x 17.72" / 270x450 |
| Tractive Effort (lbs / kg) | 8366 / 3794.76 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 5.74 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 8.79 / 2.68 |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 6.99 / 0.65 |
| Evaporative Heating Surface (sq ft / m2) | 447 / 41.50 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 447 / 41.50 |
| Evaporative Heating Surface/Cylinder Volume | 245.58 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1216 |
| Same as above plus superheater percentage | 1216 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |