Juncos Central 2-6-0 "Mogul" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 14761)

Data from Baldwin Locomotive Works Negative 7786 as archived at Flicker, http://www.flickr.com/photos/fredandrebecca/4389039935/in/pool-1209499@N23, last accessed 22 December 2012. See also DeGolyer, Vol 63, pp. 265. Works number was 54136 in November 1920.

A comment on the flickr website from a "PR RR Historian" gave a full account of this locomotive's checkered history:"For reasons never satisfactorily given, this locomotive, the second # 1 for Central Juncos [of Las Piedras, PR], only worked the railroad for a very short period of time before being sold off of the Island to a mill in the Dominican Republic in 1922."

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID14,761
RailroadJuncos Central
Number in Class1
Road Numbers1
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)7 / 2.13
Engine Wheelbase (ft / m)13.50 / 4.11
Ratio of driving wheelbase to overall engine wheebase 0.52
Overall Wheelbase (engine & tender) (ft / m)38.33 / 11.68
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)40,000 / 18,144
Engine Weight (lbs / kg)46,000 / 20,865
Tender Loaded Weight (lbs / kg)44,000 / 19,958
Total Engine and Tender Weight (lbs / kg)90,000 / 40,823
Tender Water Capacity (gals / ML)2000 / 7.58
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)4 / 3.60
Minimum weight of rail (calculated) (lb/yd / kg/m)22 / 11
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)36 / 914
Boiler Pressure (psi / kPa)170 / 11.70
High Pressure Cylinders (dia x stroke) (in / mm)12" x 16" / 305x406
Tractive Effort (lbs / kg)9248 / 4194.83
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.33
Heating Ability
Firebox Area (sq ft / m2)39 / 3.62
Grate Area (sq ft / m2)8 / 0.74
Evaporative Heating Surface (sq ft / m2)469 / 43.57
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)469 / 43.57
Evaporative Heating Surface/Cylinder Volume223.93
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1360
Same as above plus superheater percentage1360
Same as above but substitute firebox area for grate area6630
Power L13234
Power MT534.73

All material Copyright © SteamLocomotive.com
Wes Barris