Government of Nicaragua 2-4-0 Locomotives in Nicaragua

Class Details by Steve Llanso of Sweat House Media

Class La Paz (Locobase 20530)

Data from DeGolyer, Volume 18, p. 7. (Many thanks to Norman Cos for a series of emails beginning on 12 February 2019 providing much of the information in this entry.) Works numbers were 12765-12766 in June 1892.

Locobase regrets that he cannot determine either the firebox or the evaporative heating surface area from his sources. However, the 56 tubes in the boiler offered 110 sq ft (10.22 sq m), which with the small wood-burning firebox fitted to this tiny locomotive, probably added up to about 135-140 sq ft (12.54-13 sq m) of EHS.

Norman Cos supplied the following history for La Paz (Gene Connelly's Baldwin roster says the history for Tipitapa, the other locomotive, was the same in most respects.): " To begin, this is the same company that has the survivor; No.5 HK Porter # 6595 build date 1920. The company is called; "Nicaragua Sugar Estates Ltd" also as known as "Ingenio San Antonio", it was founded in 1890, by five partners."

Describing a photograph he sent to and Locobase, Cos added: "The name on the locomotive "Benard" was for a director who was president of the company during June 21, 1912 till 1935. Benard was made president after the original partner president "Alfredo Francisco Pellas Canessa" died. [NSEL]...still exist[s] today [2019], they make the rum "flor de ca ña".

Principal Dimensions by Steve Llanso of Sweat House Media

ClassLa Paz
Locobase ID20530
RailroadGovernment of Nicaragua
Number in Class2
Road Numbers12-13
Number Built2
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)5 / 1.52
Engine Wheelbase (ft / m)10.33 / 3.15
Ratio of driving wheelbase to overall engine wheelbase 0.48
Overall Wheelbase (engine & tender) (ft / m)10.33 / 3.15
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)17,000 / 7711
Engine Weight (lbs / kg)22,000 / 9979
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)22,000 / 9979
Tender Water Capacity (gals / ML)250 / 0.95
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)37 / 940
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)8" x 16" / 203x406
Tractive Effort (lbs / kg)3764 / 1707.32
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.52
Heating Ability
Tubes (number - dia) (in / mm)56 - 1.5" / 38
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)5 / 1.52
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2) 5.67 / 0.53
Evaporative Heating Surface (sq ft / m2)
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)
Evaporative Heating Surface/Cylinder Volume
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation907
Same as above plus superheater percentage907
Same as above but substitute firebox area for grate area
Power L1
Power MT

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