Cie. Agricola de Guatemala 2-8-2 Locomotives in Guatemala


Class Details by Steve Llanso of Sweat House Media

Class 18 S 128 (Locobase 5501)

Data from narrowmind.railfan.net/282Agricola-Guat183.jpg (visited 25 April 2003). Works numbers were 72654-72659, 73096-73100 in 1946, 73668-73675 in 1947, and 74125-74136 in 1948.

Very-late-in-the-game Mikado produced in the last couple of years of Baldwin's steam-locomotive era. Simple, direct design in the middle of the 2/3-gauge 2-8-2 power spectrum with 9" piston valves.

http://www.le-rail.ch/text/projekt32.htm (24 April 2003) tells us that this sextet was part of a steady importation of small Mikes of similar design to Guatemala from 1928 to 1948; see Locobase 15425. The International Railways of Central America (IRCA) were an amalgamation of many roads, including, apparently, the Agricola of Guatemala. Krupp and Baldwin were the manufacturers, with Baldwin delivering more than 30 after World War II.

Principal Dimensions by Steve Llanso of Sweat House Media
Class18 S 128
Locobase ID5501
RailroadCie. Agricola de Guatemala
CountryGuatemala
Whyte2-8-2
Number in Class33
Road Numbers175-206
Gauge3'
Number Built33
BuilderBaldwin
Year1946
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12 / 3.66
Engine Wheelbase (ft / m)62.50 / 19.05
Ratio of driving wheelbase to overall engine wheebase 0.19
Overall Wheelbase (engine & tender) (ft / m)52.29 / 15.94
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)100,500 / 45,586
Tender Loaded Weight (lbs / kg)79,000 / 35,834
Total Engine and Tender Weight (lbs / kg)224,500 / 101,832
Tender Water Capacity (gals / ML)3500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)1800 / 6.80
Minimum weight of rail (calculated) (lb/yd / kg/m)42 / 21
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)40 / 1016
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)18" x 22" / 457x559
Tractive Effort (lbs / kg)27,265 / 12367.21
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.69
Heating Ability
Firebox Area (sq ft / m2)130 / 12.08
Grate Area (sq ft / m2)34 / 3.16
Evaporative Heating Surface (sq ft / m2)1658 / 154.09
Superheating Surface (sq ft / m2)433 / 40.24
Combined Heating Surface (sq ft / m2)2091 / 194.33
Evaporative Heating Surface/Cylinder Volume255.88
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation6120
Same as above plus superheater percentage7405
Same as above but substitute firebox area for grate area28,314
Power L111,492
Power MT1008.38

All material Copyright © SteamLocomotive.com
Wes Barris