Elgoibar a San Sebastian 2-6-2 Locomotives in Spain

Class Details by Steve Llanso of Sweat House Media

Class Sagarbide (Locobase 10359)

Data from "Metre-Gauge Tank Locomotive for Spain," The Locomotive Magazine, Vol IX (5 September 1903)., p.141.

This railway was a challenge in many respects and included the construction of 6 tunnels in 5 km (3 miles). Krauss's design attempted to provide the flexibility needed to negotiate the Basque narrow-gauge's tight curves while putting substantial weight on the drivers. The FC E SS was taken into the FC Vascongados on 1 May 1906, where it joined the FC Central de Vizcaya and FC de Durango a Zumarraga.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID10359
RailroadElgoibar a San Sebastian
Number in Class
Road Numbers
Number Built
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)22.52 / 6.86
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)22.52 / 6.86
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)82,673 / 37,500
Engine Weight (lbs / kg)101,413 / 46,000
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)101,413 / 46,000
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)46 / 23
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)41.70 / 1059
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)16.5" x 21.25" / 419x540
Tractive Effort (lbs / kg)18,868 / 8558.39
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.38
Heating Ability
Tubes (number - dia) (in / mm)124 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)13.10 / 3.99
Firebox Area (sq ft / m2)64.26 / 5.97
Grate Area (sq ft / m2)15.17 / 1.41
Evaporative Heating Surface (sq ft / m2)902 / 83.83
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)902 / 83.83
Evaporative Heating Surface/Cylinder Volume171.52
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2427
Same as above plus superheater percentage2427
Same as above but substitute firebox area for grate area10,282
Power L12587
Power MT206.96

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