Data from "Steam Rail Motor Coaches, Belgian State Railways," The Locomotive Magazine, Vol XI (14 April 1905), p. 60
The steam motor shown in this report is quite a bit smaller than those most often imagined when the term is used. Its overall length ran 28 ft 6 in, of which about half was devoted to motive power and operator. The rear half was supported by one axle and hosted 2nd and 3rd class passengers and some luggage. Top speed was limited to 20 mph (32 km/h) by regulation.
| Principal Dimensions by Steve Llanso of Middle Run Media | |
|---|---|
| Class | 1 |
| Locobase ID | 10500 |
| Railroad | Belgian State |
| Country | Belgium |
| Whyte | 0-4-2T |
| Number in Class | 1 |
| Road Numbers | 1 |
| Gauge | Std |
| Number Built | 1 |
| Builder | La Metallurgique |
| Year | 1904 |
| Valve Gear | Stephenson |
| Locomotive Length and Weight | |
| Driver Wheelbase (ft / m) | |
| Engine Wheelbase (ft / m) | 13.45 / 4.10 |
| Ratio of driving wheelbase to overall engine wheelbase | |
| Overall Wheelbase (engine & tender) (ft / m) | 13.45 / 4.10 |
| Axle Loading (Maximum Weight per Axle) (lbs / kg) | |
| Weight on Drivers (lbs / kg) | 33,069 / 15,000 |
| Engine Weight (lbs / kg) | 49,383 / 22,400 |
| Tender Loaded Weight (lbs / kg) | |
| Total Engine and Tender Weight (lbs / kg) | |
| Tender Water Capacity (gals / ML) | 475 / 1.80 |
| Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 0.60 / 1 |
| Minimum weight of rail (calculated) (lb/yd / kg/m) | 28 / 14 |
| Geometry Relating to Tractive Effort | |
| Driver Diameter (in / mm) | 38.60 / 980 |
| Boiler Pressure (psi / kPa) | 175.50 / 1210 |
| High Pressure Cylinders (dia x stroke) (in / mm) | 9.84" x 12.6" / 250x320 |
| Tractive Effort (lbs / kg) | 4715 / 2138.69 |
| Factor of Adhesion (Weight on Drivers/Tractive Effort) | 7.01 |
| Heating Ability | |
| Tubes (number - dia) (in / mm) | |
| Flues (number - dia) (in / mm) | |
| Flue/Tube length (ft / m) | |
| Firebox Area (sq ft / m2) | 46.27 / 4.30 |
| Grate Area (sq ft / m2) | 11.84 / 1.10 |
| Evaporative Heating Surface (sq ft / m2) | 240 / 22.30 |
| Superheating Surface (sq ft / m2) | |
| Combined Heating Surface (sq ft / m2) | 240 / 22.30 |
| Evaporative Heating Surface/Cylinder Volume | 216.41 |
| Computations Relating to Power Output (More Information) | |
| Robert LeMassena's Power Computation | 2078 |
| Same as above plus superheater percentage | 2078 |
| Same as above but substitute firebox area for grate area | 8120 |
| Power L1 | 4799 |
| Power MT | 639.87 |