Central Monserrate 0-4-0 "Switcher" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class Carmen (Locobase 14756)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 63 p.247. See Locobase 13278 for a description of the Monserrate. Works number was 53372 in July 1920.

Even for the 60-cm gauge, this was a small tank engine.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID14,756
RailroadCentral Monserrate
Number in Class1
Road Numbers8
Gauge60 cm
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 3.33 / 1.01
Engine Wheelbase (ft / m) 3.33 / 1.01
Ratio of driving wheelbase to overall engine wheebase1
Overall Wheelbase (engine & tender) (ft / m) 3.33 / 1.01
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)12,000 / 5443
Engine Weight (lbs / kg)12,000 / 5443
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)12,000
Tender Water Capacity (gals / ML)140 / 0.53
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)30 / 27.30
Minimum weight of rail (calculated) (lb/yd / kg/m)10 / 5
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)24 / 610
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)6" x 12" / 152x305
Tractive Effort (lbs / kg)2448 / 1110.40
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.90
Heating Ability
Firebox Area (sq ft / m2)15.40 / 1.43
Grate Area (sq ft / m2) 3.50 / 0.33
Evaporative Heating Surface (sq ft / m2)90 / 8.36
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)90 / 8.36
Evaporative Heating Surface/Cylinder Volume229.18
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation560
Same as above plus superheater percentage560
Same as above but substitute firebox area for grate area2464
Power L12722
Power MT1000.16

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