Data from "Bogie Tank Locomotive, Great Southern & Western Ry", The Railway Magazine, Volume XII [12] ( 15 August 1906), p.141
For decades, the GS & WR operated a couple of dozen of these adhesion-leading tank engines on many services. In 1906, the railway still had 20 in service, some handling virtually all of the local traffic on the Cork-Queenstown (Cobh) - Youghal line. A daily mail connecting Queenstown with Cork 12 miles away would cover the distance in 22 minutes.
Little had been done to change the 1880s look of the design. A slender dome sat on the center of the boiler behind a tall capped stack, the running board featured splashers over both drivers and arches over the crank radius on each driver. The trailing bogie had outside, overhead springs on both axles.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 47 |
| Locobase ID | 10580 |
| Railroad | Great Southern & Western |
| Country | Ireland |
| Whyte | 0-4-4T |
| Number in Class | 20 |
| Road Numbers | 47-51, 70-84 |
| Gauge | 5'3" |
| Number Built | 20 |
| Builder | |
| Year | 1883 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 6 / 1.83 |
| Engine Wheelbase (ft / m) | 13.92 / 4.24 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.43 |
| Overall Wheelbase (engine & tender) (ft / m) | 13.92 / 4.24 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 41,216 / 18,695 |
| Engine Weight (lbs / kg) | 93,632 / 42,471 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 1252 / 4.74 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 34 / 17 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 68.50 / 1740 |
| Boiler Pressure (psi / kPa) | 130 / 900 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 16" x 20" / 406x508 |
| Tractive Effort (lbs / kg) | 8259 / 3746.22 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 4.99 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | |
| Grate Area (sq ft / m2) | 16 / 1.49 |
| Evaporative Heating Surface (sq ft / m2) | 863 / 80.17 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 863 / 80.17 |
| Evaporative Heating Surface/Cylinder Volume | 185.42 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2080 |
| Same as above plus superheater percentage | 2080 |
| Same as above but substitute firebox area for grate area | |
| Power L1 | |
| Power MT | |