Data from "Locomotives of the Antwerp-Ghent Railway," The Locomotive Magazine, Vol VIII (23 May 1903), p. 353. Works numbers 690-692, 718-719.
An unusual feature of this design, according to the article, was the very large surface area devoted to the Belpaire firebox. Locobase wonders if somehow the author simply miscalculated the metric dimensions. He does underscore the "remarkable" proportions and separates the two numbers, but still ...
The tall and slender polished-brass dome had a saucer-like cover and the inversely tapered stack had a broad cap. When the A-G was taken into the Belgian State Railway system in 1899, these locomotivers were withdrawn from service.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 20 |
| Locobase ID | 10324 |
| Railroad | Antwerp-Ghent |
| Country | Belgium |
| Whyte | 2-2-2T |
| Number in Class | 5 |
| Road Numbers | 20-24 |
| Gauge | 3' 7" |
| Number Built | 5 |
| Builder | SA Saint Leonard |
| Year | 1885 |
| Valve Gear | Walschaert |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | 6.56 / 2 |
| Engine Wheelbase (ft / m) | 13.12 / 4 |
| Ratio of driving wheelbase to overall engine wheelbase | 0.50 |
| Overall Wheelbase (engine & tender) (ft / m) | 13.12 / 4 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | |
| Engine Weight (lbs / kg) | 50,960 / 23,115 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | 50,960 / 23,115 |
| Tender Water Capacity (gals / ML) | 684 / 2.59 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.60 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 59.40 / 1510 |
| Boiler Pressure (psi / kPa) | 127.60 / 880 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 11.02" x 20.08" / 280x510 |
| Tractive Effort (lbs / kg) | 4453 / 2019.85 |
| 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) | 384.99 / 35.78 |
| Grate Area (sq ft / m2) | 9.04 / 0.84 |
| Evaporative Heating Surface (sq ft / m2) | 815 / 75.75 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 815 / 75.75 |
| Evaporative Heating Surface/Cylinder Volume | 367.67 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 1154 |
| Same as above plus superheater percentage | 1154 |
| Same as above but substitute firebox area for grate area | 49,125 |
| Power L1 | 15,614 |
| Power MT | |