Belgian State 2-10-0 Locomotives in Belgium

Class Details by Steve Llanso of Sweat House Media

Class Series 36 (Locobase 2523)

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 Sweat House Media

ClassSeries 36
Locobase ID2523
RailroadBelgian State
Number in Class153
Road Numbers4348-4500
Number Built153
BuilderFUF Haine Saint-Pierre
Valve GearWalschaert
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 / 14.50
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 Volume153.67
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation11,318
Same as above plus superheater percentage13,469
Same as above but substitute firebox area for grate area51,047
Power L110,751
Power MT612.24

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