Walter H Gahagan 4-6-0 "Ten-Wheeler" Type Locomotives

Class Details by Steve Llanso

Class 1 (Locobase 13334)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 32, p. 51 and 311. Works numbers were 33013-33014 in October 1908 and 33255-33256 in March.

Gahagan was a large construction company that worked on civil-engineering projects across the country. Baldwin supplied two wheel arrangements to the company: this quartet of small Ten-wheelers and six 0-4-0 switchers.

All of the 4-6-0s were sold to other industrial or logging operators after a period in Gahagan service. The 1 went to the Isle d'Anticosti in Quebec's Gulf of St Lawrence and was used in logging operations. 2's first stop was locomotive rebuilder/reseller Birmingham Rail & Locomotive. BR & L sold the engine to Gulledge Lumber Company of Haines City, Fla, passed quickly to International Paper, and wound up with Polk City Lumber in 1927. 3 was sold to Warner Sugar Refining Company in Waukegan, Ill. 4 went to Wickwire Steel of Buffalo, NY by 1917.

Specifications by Steve Llanso
Class 1
Locobase ID 13334
Railroad Walter H Gahagan
Whyte 4-6-0
Road Numbers 1-4
Gauge Std
Builder Burnham, Williams & Co
Year 1908
Valve Gear Stephenson
Locomotive Length and Weight
Driver Wheelbase 10.50'
Engine Wheelbase 21.17'
Ratio of driving wheelbase to overall engine wheebase 0.50
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)
Weight on Drivers 84000 lbs
Engine Weight 104500 lbs
Tender Light Weight 60000 lbs
Total Engine and Tender Weight 164500 lbs
Tender Water Capacity 3000 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated) on which locomotive could run 47 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter 46"
Boiler Pressure 180 psi
Cylinders (dia x stroke) 17" x 24"
Tractive Effort 23070 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.64
Heating Ability
Firebox Area 114 sq. ft
Grate Area 22.20 sq. ft
Evaporative Heating Surface 1334 sq. ft
Superheating Surface
Combined Heating Surface 1334 sq. ft
Evaporative Heating Surface/Cylinder Volume 211.58
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation 3996
Same as above plus superheater percentage 3996
Same as above but substitute firebox area for grate area 20520
Power L1 4167
Power MT 328.09


Introduction and roster provided by Richard Duley . Class details and specifications provided by Steve Llanso of Sweat House Media.

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