Long-boilered type with outside cylinders between the leading axles and a "gothic" domed firebox. One wonders if the ride might have been improved by so large a gap between the 2 leading, and unpowered, axles. Based on Gooch's experience with Stephenson's Great A, Locobase is skeptical; see entry 3030.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | La Tarasque |
| Locobase ID | 620 |
| Railroad | Avignon & Marseille |
| Country | France |
| Whyte | 4-2-0 |
| Number in Class | |
| Road Numbers | 210 / 192 |
| Gauge | Std |
| Number Built | |
| Builder | Le Benet |
| Year | 1846 |
| Valve Gear | |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 13.29 / 4.05 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | 26,455 / 12,000 |
| Weight on Drivers (lbs / kg) | 26,455 / 12,000 |
| Engine Weight (lbs / kg) | 59,547 / 27,010 |
| 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) | 44 / 22 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 65 / 1650 |
| Boiler Pressure (psi / kPa) | 116 / 800 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 14.96" x 22.05" / 380x560 |
| Tractive Effort (lbs / kg) | 7486 / 3395.60 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.53 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | 12.57 / 3.83 |
| Firebox Area (sq ft / m2) | 50.27 / 4.67 |
| Grate Area (sq ft / m2) | |
| Evaporative Heating Surface (sq ft / m2) | 513 / 47.64 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 513 / 47.64 |
| Evaporative Heating Surface/Cylinder Volume | 114.36 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | |
| Same as above plus superheater percentage | |
| Same as above but substitute firebox area for grate area | 5831 |
| Power L1 | 2141 |
| Power MT | 178.42 |