Matanzas 2-6-6 Locomotives in Cuba

Class Details by Steve Llanso of Sweat House Media

Class 32 (Locobase 20323)

Data from "Double-End, Narrow-Gauge, Tank Locomotive for the Matanzas Railroad", Railroad Gazette, Volume XI [11] (28 March 1879), p. 167. Works number was 2504 in November 1878.

Relatively large for its day and gauge, this wood burner continued a long-standing partnership between the Paterson,NJ builder and the Cuban north shore sugar producer. It joined an earlier Rogers double-ender (works number 2395 in February 1875), which rolled on 30" (762 mm) drivers as a 2-4-4T with 11"(279 mm) x 16" (406 mm) cylinders.

This may have been the first tank engine to have a six-wheel bogie under the tank. A large cab with extended roof dwarfed the slender boiler, although the other end featured an enormous spark-arresting cabbage stack over the smokebox. The latter rested on an extension of a frame that began just behind the last set of drivers. Roger's William Hudson had developed the definitive leading truck for a Mogul arrangement (see Locobase 2558) and that setup served the 32 as well.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID20323
Number in Class1
Road Numbers32
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.25 / 2.82
Engine Wheelbase (ft / m)31.08 / 9.47
Ratio of driving wheelbase to overall engine wheelbase 0.30
Overall Wheelbase (engine & tender) (ft / m)31.08 / 9.47
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)40,200 / 18,234
Engine Weight (lbs / kg)74,200 / 33,657
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)1300 / 4.92
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)22 / 11
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33.75 / 857
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)13.5" x 16" / 343x406
Tractive Effort (lbs / kg)11,016 / 4996.78
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.65
Heating Ability
Tubes (number - dia) (in / mm)82 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.92 / 3.63
Firebox Area (sq ft / m2)57.40 / 5.33
Grate Area (sq ft / m2) 9.60 / 0.89
Evaporative Heating Surface (sq ft / m2)568 / 52.77
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)568 / 52.77
Evaporative Heating Surface/Cylinder Volume214.28
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1440
Same as above plus superheater percentage1440
Same as above but substitute firebox area for grate area8610
Power L12722
Power MT447.83

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