Belgian Railways 0-4-2 Locomotives in Belgium

Class Details by Steve Llanso of Sweat House Media

Class Elephant (Locobase 16089)

Data from Arthur E Kyffin, "Some Vulcan Foundry Engines", The Railway Engineer, Volume 17, No 9 (September 1896), p. 259. Works number was 13 in April 1835.

Class Type 1 (Locobase 20821)

Data from Luc Delporte, "Locomotive fourgon - Tubize type 28 (type 1 EB)" posted 30 April 2019 on the Musee de la Porte website at [], last accessed 26 December 2020. Several different Belgian builders supplied engines. 2001-2007 came from Carels, 2008-2019 from Saint-Leonard, 2020-2028 from Haine Saint Pierre, Zimmerman-Hanrez added 2029-2032, and Tubize supplied 2033-2036.

Known as locomotives-fourgons, this tank engine design combined a small boiler and drivers and a large baggage van section on the rear of the frame. In addition to this load, the engine was expected to pull one or two passenger carriages on lightly traveled lines.

All three axles rolled wheels of the same size, but only the first two were coupled and driven by cylinders. There were two variants. The first 36 put the cylinders inside with valves actuated by Stephenson link motion; the last ten had outside Walschaert motion working valves on outside cylinders.

NB: Belgian railways data usually used the external (water side) tube diameter in its specs, but calculated heating surface area using the internal (fire side) diameter. In this design, tube heating surface area was 30.75 sq m (331 sq m). Locobase uses the external diameter to simplify comparison with the widespread practice in several key countries.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassElephantType 1
Locobase ID16089 20821
RailroadBelgian RailwaysBelgian Railways
Number in Class136
Road Numbers2001-2066, 2037-2046
Number Built136
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 5.91 / 1.80
Engine Wheelbase (ft / m)13.62 / 4.15
Ratio of driving wheelbase to overall engine wheelbase 0.43
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)
Engine Weight (lbs / kg)58,202 / 26,400
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)58,202 / 26,400
Tender Water Capacity (gals / ML)884 / 3.35
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.30 / 1.20
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)54 / 137238.60 / 980
Boiler Pressure (psi / kPa)89.90 / 6.20174 / 12
High Pressure Cylinders (dia x stroke) (in / mm)11" x 18" / 279x45710.63" x 13.78" / 270x350
Tractive Effort (lbs / kg)3082 / 1397.975966 / 2706.14
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Tubes (number - dia) (in / mm)102 - 1.625" / 41123 - 1.772" / 45
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 6.73 / 2.05
Firebox Area (sq ft / m2)59.96 / 5.5753.93 / 5.01
Grate Area (sq ft / m2)14.32 / 1.33
Evaporative Heating Surface (sq ft / m2)428 / 39.76438 / 40.69
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)428 / 39.76438 / 40.69
Evaporative Heating Surface/Cylinder Volume216.18309.44
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2492
Same as above plus superheater percentage2492
Same as above but substitute firebox area for grate area53909384
Power L129745596
Power MT

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