Data from cnum_8XAE739, Exposition universelle, Groupe VII. Classes 39 et 40: Industrie des Transports-Chemins de fer et Tramways. Exposition internationale des industries et du travail de Turin 1911 (Paris: Comite Francais des Expositions a l'Etranger, 1911), p. 18. See also J B Flamme, Les Materiel des Chemins de Fer a L'Exposition universelle et internationale de Bruxelles de 1910 (Paris: H. Dunod et E Pinat, 1911), pp. 70-87 for detailed descriptions and diagrams.
B. Flamme was faced with providing more power for the grade in the mountainous regions of Belgium and he responded with the Series 36. The engine used a Zara truck that combined the pony truck and the first driving axle. Its other driving axles all enjoyed some degree of play. The second axle swung 46 mm (1.8"), and other axles also contributed to an ability for this mammoth to negotiate curves of 100 metres radius. Four piston valves, each of 285 mm (11.2"), served the cylinders.
This was not a pretty engine with its coned second course, extended re-heater, and tubing and auxiliaries bolted here and there. Even the cab looked odd as it featured not just side windows, but skylight-type openings in the slanted roof and a clerestory on the roof's centerline.
But it was very powerful and successful. Even in its original form it could pull 443 tons up a 2.5% grade, 600 tons at 22 mph up a 1.6% grade. 136 were in service by 1914 and 17 were added from 1921-1926.
When upgraded later on with a Legein double blastpipe and rearranged superheater, horsepower increased to 2,300. They enjoyed long service lives.
NB: The tube heating surface area used in the evaporative heating surface total shows the water side (outside) diameter. When calculated from the fire side (inside) diameter, its evaporative heating surface area amounted to 238.95 sq m (2,572 sq ft).
Principal Dimensions by Steve Llanso of Middle Run Media | |
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Class | Series 36 |
Locobase ID | 2523 |
Railroad | Belgian State |
Country | Belgium |
Whyte | 2-10-0 |
Number in Class | 153 |
Road Numbers | 4348-4500 |
Gauge | Std |
Number Built | 153 |
Builder | FUF Haine Saint-Pierre |
Year | 1909 |
Valve Gear | Walschaert |
Locomotive Length and Weight | |
Driver Wheelbase (ft / m) | 24.97 / 7.61 |
Engine Wheelbase (ft / m) | 33.20 / 10.12 |
Ratio of driving wheelbase to overall engine wheelbase | 0.75 |
Overall Wheelbase (engine & tender) (ft / m) | |
Axle Loading (Maximum Weight per Axle) (lbs / kg) | 39,242 / 17,800 |
Weight on Drivers (lbs / kg) | 193,566 / 87,800 |
Engine Weight (lbs / kg) | 228,399 / 104,200 |
Tender Loaded Weight (lbs / kg) | 118,168 / 53,600 |
Total Engine and Tender Weight (lbs / kg) | 346,567 / 157,800 |
Tender Water Capacity (gals / ML) | 6336 / 24 |
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) | 7.70 / 7 |
Minimum weight of rail (calculated) (lb/yd / kg/m) | 65 / 32.50 |
Geometry Relating to Tractive Effort | |
Driver Diameter (in / mm) | 57.10 / 1450 |
Boiler Pressure (psi / kPa) | 210.30 / 1450 |
High Pressure Cylinders (dia x stroke) (in / mm) | 19.69" x 25.98" / 500x660 (4) |
Tractive Effort (lbs / kg) | 63,064 / 28605.38 |
Factor of Adhesion (Weight on Drivers/Tractive Effort) | 3.07 |
Heating Ability | |
Tubes (number - dia) (in / mm) | 230 - 1.969" / 50 |
Flues (number - dia) (in / mm) | 31 - 5" / 127 |
Flue/Tube length (ft / m) | 16.40 / 5 |
Firebox Area (sq ft / m2) | 203.98 / 18.95 |
Grate Area (sq ft / m2) | 53.82 / 5 |
Evaporative Heating Surface (sq ft / m2) | 2814 / 261.40 |
Superheating Surface (sq ft / m2) | 667 / 62 |
Combined Heating Surface (sq ft / m2) | 3481 / 323.40 |
Evaporative Heating Surface/Cylinder Volume | 153.67 |
Computations Relating to Power Output (More Information) | |
Robert LeMassena's Power Computation | 11,318 |
Same as above plus superheater percentage | 13,469 |
Same as above but substitute firebox area for grate area | 51,047 |
Power L1 | 10,751 |
Power MT | 612.24 |