Alexander Gilmer Lumber Company 2-6-2 "Prairie" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 13119)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 30, p. 158. See also Thad Sitton & James H. Conrad, Nameless towns: Texas sawmill communities, 1880-1942 (Austin, TX: University of Texas Press, 1998). p. 63. Works number was 30152 in February 1907.

Headquartered in Remlig, Texas (to decipher the origins of the town name, read it backward), the AGLC adopted the Baldwin Prairie logging locomotive design for its operations. They proclaimed themselves as Manufacturers of Nothing But Long Leaf Yellow Pine. After some years on the AGLC, the 2 was sold to Martin Wagon Company.

Sitton and Conrad report that like many other lumber companies of the time, Alexander Gilmer used a pay-slip system which operated daily but were redeemed only once a month for merchandise at the company store. Used any earlier, the slips would lose some of their face value and private merchants would discount the slips by 20-30%

Specifications by Steve Llanso of Sweat House Media
Class3
Locobase ID13,119
RailroadAlexander Gilmer Lumber Company
CountryUSA
Whyte2-6-2
Number in Class1
Road Numbers3
GaugeStd
Number Built1
BuilderBurnham, Williams & Co
Year1907
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft) 9.17
Engine Wheelbase (ft)23.75
Ratio of driving wheelbase to overall engine wheebase 0.39
Overall Wheelbase (engine & tender) (ft)
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)61,000
Engine Weight (lbs)83,300
Tender Loaded Weight (lbs)50,000
Total Engine and Tender Weight (lbs)133,300
Tender Water Capacity (gals)2500
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)34
Geometry Relating to Tractive Effort
Driver Diameter (in)46
Boiler Pressure (psi)180
High Pressure Cylinders (dia x stroke) (in)15" x 20"
Tractive Effort (lbs)14,967
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.08
Heating Ability
Firebox Area (sq ft)82.20
Grate Area (sq ft)14.13
Evaporative Heating Surface (sq ft)991
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)991
Evaporative Heating Surface/Cylinder Volume242.26
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2543
Same as above plus superheater percentage2543
Same as above but substitute firebox area for grate area14,796
Power L14730
Power MT512.85


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