Zaragoza al Mediterraneo 2-6-0 Locomotives in Spain

Class Details by Steve Llanso of Sweat House Media

Class 101 (Locobase 11651)

Data from Baldwin Locomotive Works Specification for Engines, 1888, as digitized by the DeGolyer Library of Southern Methodist University Vol 15, p. 249. Works numbers were 10651-10652 in February 1890. See [], last accessed 22 Sept 2010 for a complete history of the Z al M.

The troubled Z al M was a British-owned company that struggled to complete a line from Zaragoza to the Mediterranean begun in 1864. Funding seems to have been a constant limitation and the line was fitfully built for more than two decades. Only the section between Pueblo de Hijar and Alcaniz had actually been constructed.

The 4 Abril 1888 law gave the latest reorganization (which adopted the name Zaragoza al Mediterraneo) four more years to complete the railroad. This spur seems to energized the company as it liquidated some debt, bought some locomotives (including the two Moguls in this entry), and forged ahead. A branch line linked the Samper to Reus section to the Val de San Carlos de la Rapita line in 1894 and the Pueblo de Hijar-Alcaniz line was formally opened 31 July 1895.

Alas, the effort bankrupted the Z al M and it ceased operation in 1898. Some of the sectons were distributed to other railways, but the core 32 km between Pueblo de Hijar and Alcaniz was taken over and operated by the government.

In 1910, the two Moguls and their railroad came under the control of the Sur de Espana as its 11 & 12. The S de E scrapped them in 1926.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID11651
RailroadZaragoza al Mediterraneo
Number in Class2
Road Numbers101-102
Number Built2
BuilderBurnham, Parry, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.67 / 4.17
Engine Wheelbase (ft / m)21 / 6.40
Ratio of driving wheelbase to overall engine wheelbase 0.65
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)72,000 / 32,659
Engine Weight (lbs / kg)88,000 / 39,916
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)2500 / 9.47
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)40 / 20
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)56 / 1422
Boiler Pressure (psi / kPa)130 / 9
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)15,344 / 6959.93
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.69
Heating Ability
Tubes (number - dia) (in / mm)204 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.62 / 3.24
Firebox Area (sq ft / m2)99 / 9.20
Grate Area (sq ft / m2)15.90 / 1.48
Evaporative Heating Surface (sq ft / m2)1121 / 104.18
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1121 / 104.18
Evaporative Heating Surface/Cylinder Volume158.59
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2067
Same as above plus superheater percentage2067
Same as above but substitute firebox area for grate area12,870
Power L12774
Power MT254.82

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