Georgia Coast & Piedmont 4-6-0 "Ten-wheeler" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 66 (Locobase 12871)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 47, p. 260. Works numbers were 39655-39656 in April 1913

Locobase 12870 shows the first five in a group of small Ten-wheelers that operated on this eastern Georgia shortline. Seven years after that quintet had been ordered, the GC & P returned for two more that had the same cylinder volume and driver diameter. But the boiler pressure increased by 20 psi, coal fuel was substituted for wood, and the valves were now actuated by the increasingly popular Walschaert outside radial gear.

When the GC & P began selling off its assets as part of its closure in 1918-1919, these two joined four of the earlier locomotives at the locomotive rebuilder/reseller Georgia Car & Locomotive. Both were sold to lumber companies. 66 went to J Ray Arnold Lumber Coas their 100 in March 1920, then Putnam Lumber. 67 joined 63 at Lyon Lumber in Garyville, La in December 1919, where it took #9 and joined the #10 (ex-71 described on Locobase 12872)..


Class 70 (Locobase 12872)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 53, p. 369+. Works numbers were 41463-41464 in June 1914.

Typical Ten-wheel short line freighters that represented a slightly larger version of the 1913 Baldwins described on Locobase 12871.

When the GC&P was sold to Collins and Ludowici in October 1919, the two Ten-wheelers went to locomotive rebuilder/reseller Georgia Car & Locomotive. GC&L quickly found buyers for each. 70 went to the Marianna & Blountstown and 71 began operating on Lyons Lumber tracks as the Garyville, La company's #10 in company with the #9 (ex-GC&P 67).

Specifications by Steve Llanso of Sweat House Media
Class6670
Locobase ID12871 12872
RailroadGeorgia Coast & PiedmontGeorgia Coast & Piedmont
CountryUSAUSA
Whyte4-6-04-6-0
Number in Class22
Road Numbers66-6770-71
GaugeStdStd
Number Built22
BuilderBaldwinBaldwin
Year19131914
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase12.83'12.83'
Engine Wheelbase22.98'23.42'
Ratio of driving wheelbase to overall engine wheebase 0.56 0.55
Overall Wheelbase (engine & tender)48.17'49.62'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers72000 lbs87000 lbs
Engine Weight100000 lbs115000 lbs
Tender Light Weight90000 lbs90000 lbs
Total Engine and Tender Weight190000 lbs205000 lbs
Tender Water Capacity4500 gals4500 gals
Tender Fuel Capacity (oil/coal)6 tons6 tons
Minimum weight of rail (calculated)40 lb/yard48 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter56"56"
Boiler Pressure200 psi180 psi
Cylinders (dia x stroke)16" x 24"17" x 26"
Tractive Effort18651 lbs20529 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.86 4.24
Heating Ability
Firebox Area93 sq. ft121 sq. ft
Grate Area15 sq. ft20.60 sq. ft
Evaporative Heating Surface1225 sq. ft1362 sq. ft
Superheating Surface
Combined Heating Surface1225 sq. ft1362 sq. ft
Evaporative Heating Surface/Cylinder Volume219.34199.40
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation30003708
Same as above plus superheater percentage30003708
Same as above but substitute firebox area for grate area1860021780
Power L156484838
Power MT518.82367.79


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