Torralba-Soria 0-8-0 Locomotives in Spain


Class Details by Steve Llanso of Sweat House Media

Class 040-2241 (Locobase 3461)

Data from [], the web site of the Spanish National Railway. See also Justo Arenillas in "Las locomotoras belgas en el Madrid-Caceres-Portugal", Lineas Del Tren (as reproduced on [], viewed 28 April 2003).

Arenillas notes that the Stephenson valve gear on these "Spanish Great Central" engines was an unusual provision for Belgian-built locomotives. Most had the home-grown, but widely used, radial gear originally developed by Belgian Egide Walschaert. They also used the Belpaire firebox.


Class 231/040-2261 (Locobase 3463)

Data from [], the web site of the Spanish National Railway and from [].

See also Justo Arenillas in "Las locomotoras belgas de Andaluces", Lineas Del Tren (as reproduced on (reproduced on [], viewed 28 April 2003)

These eight-coupleds were purchased by Torralba-Soria before that line was absorbed by the Sur. Although quite a bit smaller, this trio came from the same builder as the TS's 80-81, which were procured in the same year but fitted with Stephenson valve gear.

According to the ASAFAL website, "Estos eran los nombres originales de Sur de Espaa:

101- Barcelona

102- Almanzora

103- Or+n

These Belpaire-firebox engines were delivered in two batches, the first three in 1897.

Later the Andaluces operated them as 231-233. In 1941, RENFE incorporated them as 040-2261 / 040-2263.

Principal Dimensions by Steve Llanso of Sweat House Media

Class040-2241231/040-2261
Locobase ID3461 3463
RailroadTorralba-Soria (Sur de Espana)Torralba-Soria (Sur de Espana)
CountrySpainSpain
Whyte0-8-00-8-0
Number in Class23
Road Numbers80-81231-233/040-2261 a 2263
Gauge5'6"5'6"
Number Built23
BuilderSA Saint LeonardSA Saint Leonard
Year18921891
Valve GearStephensonWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.76 / 4.5013.58 / 4.14
Engine Wheelbase (ft / m)14.76 / 4.5013.58 / 4.14
Ratio of driving wheelbase to overall engine wheelbase11
Overall Wheelbase (engine & tender) (ft / m)35.86 / 10.9334.15 / 10.41
Axle Loading (Maximum Weight per Axle) (lbs / kg)25,353 / 11,50028,054 / 12,725
Weight on Drivers (lbs / kg)101,413 / 46,000108,908 / 49,400
Engine Weight (lbs / kg)101,413 / 46,000108,908 / 49,400
Tender Loaded Weight (lbs / kg)61,729 / 28,00056,218 / 25,500
Total Engine and Tender Weight (lbs / kg)163,142 / 74,000165,126 / 74,900
Tender Water Capacity (gals / ML)1848 / 72640 / 10
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 7.70 / 7 4.40 / 4
Minimum weight of rail (calculated) (lb/yd / kg/m)42 / 2145 / 22.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51.20 / 130051.20 / 1300
Boiler Pressure (psi / kPa)142.10 / 9.80171.10 / 11.80
High Pressure Cylinders (dia x stroke) (in / mm)19.69" x 25.59" / 500x65018.5" x 25.59" / 470x650
Tractive Effort (lbs / kg)23,405 / 10616.3424,878 / 11284.48
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.33 4.38
Heating Ability
Tubes (number - dia) (in / mm)203 - 1.969" / 50181 - 1.969" / 50
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)16.93 / 5.1612.47 / 3.80
Firebox Area (sq ft / m2)103.66 / 9.63102.37 / 9.51
Grate Area (sq ft / m2)20.24 / 1.8824.11 / 2.24
Evaporative Heating Surface (sq ft / m2)1848 / 171.651252 / 116.30
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1848 / 171.651252 / 116.30
Evaporative Heating Surface/Cylinder Volume204.91157.26
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation28764125
Same as above plus superheater percentage28764125
Same as above but substitute firebox area for grate area14,73017,516
Power L131823235
Power MT276.69261.94

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