Gainesville Midland 4-6-0 "Ten-wheeler" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 100 (Locobase 12956)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 28, p 293. See the entry at the Rail Georgia Railroad History website at http://railga.com/gm.html . Works number was 28877 in August 1906.

Georgia short line GM set up in 1906, its core much of the foreclosed property of the narrow-gauge Gainesville, Jefferson & Southern; its trackage connected Gainesville, Jefferson, and Monroe. The Rail Georgia account tells us that until 1908, the only standard-gauge portion of the system was the 19 southernmost miles built in 1906 from Jefferson to the Seaboard Air Line connection at Fowler Junction, 2 miles outside of Athens.

Probably because of delays in constructing the standard-gauge section, the first 100 produced in April 1906 was sent to the New Mexico Midland (See Locobase 12957). The spec for the order stated that the locomotive "....must draw 155 to 170 tons of 2000 lbs. of cars an dloading up a grade of 3% in conjunction with 14-degree curve [269-ft curve radius] at 8 to 10 miles per hour, or 450 tons on level track at 50 miles per hour."

Specifications by Steve Llanso of Sweat House Media
Class100
Locobase ID12956
RailroadGainesville Midland
CountryUSA
Whyte4-6-0
Number in Class1
Road Numbers100
GaugeStd
Number Built1
BuilderBurnham, Williams & Co
Year1906
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase14'
Engine Wheelbase24.25'
Ratio of driving wheelbase to overall engine wheebase 0.58
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)
Weight on Drivers96000 lbs
Engine Weight126000 lbs
Tender Light Weight120000 lbs
Total Engine and Tender Weight246000 lbs
Tender Water Capacity6000 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)53 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter56"
Boiler Pressure180 psi
Cylinders (dia x stroke)19" x 24"
Tractive Effort23671 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.06
Heating Ability
Firebox Area128 sq. ft
Grate Area40 sq. ft
Evaporative Heating Surface1912 sq. ft
Superheating Surface
Combined Heating Surface1912 sq. ft
Evaporative Heating Surface/Cylinder Volume242.77
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation7200
Same as above plus superheater percentage7200
Same as above but substitute firebox area for grate area23040
Power L15444
Power MT375.06


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