CF do Vale do Vouga 4-6-0 Locomotives in Portugal
Class Details by Steve Llanso of Sweat House Media
Class 121 (Locobase 9706)
Data from [
], last accessed 30 November 2008.
These narrow-gauge tank engines served the Vale do Vouga area both before and after the formation of the CP in 1951. When the lines were closed in 1972, the engines were based at the Sernada depot, from which they were tranferred to Viseu. The last to retire was E 122 which left service on 24 April 1977. Only E 121 was scrapped; the others have all been preserved.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 121 |
| Locobase ID | 9706 |
| Railroad | CF do Vale do Vouga |
| Country | Portugal |
| Whyte | 4-6-0T |
| Number in Class | 4 |
| Road Numbers | 21-24 / E 121-124 |
| Gauge | Metre |
| Number Built | 4 |
| Builder | Borsig |
| Year | 1908 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 81,571 / 37,000 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 81,571 / 37,000 |
| Tender Water Capacity (gals / ML) | 1109 / 4.20 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 1.30 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 43.30 / 1100 |
| Boiler Pressure (psi / kPa) | 169.70 / 1170 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14.17" x 19.69" / 360x500 |
| Tractive Effort (lbs / kg) | 13,170 / 5973.82 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 58.10 / 5.40 |
| Grate Area (sq ft / m2) | 13.77 / 1.28 |
| Evaporative Heating Surface (sq ft / m2) | 785 / 73 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 785 / 73 |
| Evaporative Heating Surface/Cylinder Volume | 218.43 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2337 |
| Same as above plus superheater percentage | 2337 |
| Same as above but substitute firebox area for grate area | 9860 |
| Power L1 | 3665 |
| Power MT | |