Triano 2-4-0 Locomotives in Spain


Class Details by Steve Llanso of Sweat House Media

Class 120-0211 (Locobase 3337)

Data from [] (accessed 31 January 2007).

This little tank was dubbed Somorrostro when it entered service. It was the odd one out among the RENFE holding of small tank engines in having fewer tubes of smaller diameter. Like the others, the 17 served the Bilbao-Portugalete suburban lines until electrification in the 1930s. It then operated in auxiliary service into the 1960s.

Principal Dimensions by Steve Llanso of Middle Run Media

Class120-0211
Locobase ID3337
RailroadTriano
CountrySpain
Whyte2-4-0T
Number in Class1
Road Numbers17
Gauge5'6"
Number Built1
BuilderNasmyth Wilson
Year1917
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.29 / 3.75
Engine Wheelbase (ft / m)12.29 / 3.75
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)12.29 / 3.75
Axle Loading (Maximum Weight per Axle) (lbs / kg)26,885 / 12,195
Weight on Drivers (lbs / kg)55,116 / 25,000
Engine Weight (lbs / kg)74,957 / 34,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)74,957 / 34,000
Tender Water Capacity (gals / ML)1188 / 4.50
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 1.70 / 2
Minimum weight of rail (calculated) (lb/yd / kg/m)46 / 23
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)54 / 1372
Boiler Pressure (psi / kPa)145 / 10
High Pressure Cylinders (dia x stroke) (in / mm)15" x 20" / 381x508
Tractive Effort (lbs / kg)10,271 / 4658.85
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.37
Heating Ability
Tubes (number - dia) (in / mm)140 - 1.969" / 50
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 9.19 / 2.80
Firebox Area (sq ft / m2)66.74 / 6.20
Grate Area (sq ft / m2)11.09 / 1.03
Evaporative Heating Surface (sq ft / m2)771 / 71.60
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)771 / 71.60
Evaporative Heating Surface/Cylinder Volume188.48
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1608
Same as above plus superheater percentage1608
Same as above but substitute firebox area for grate area9677
Power L13524
Power MT281.92

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