Gainesville & Gulf 4-4-0 "American" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 6 (Locobase 16235)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 21, p. 54 Works numbers were 15464 in August 1897.

Essentially identical to the Detroit & Lima Northern delivered a few months earlier (Locobase 16233), this wood-burning Eight-wheeler had smaller drivers, higher boiler pressure, and a larger tender.

Formerly the Gainesville Rocky Point & Micanopy, the G&G emerged in 1895 after reorganization. It was reorganized again as the Tampa & Jacksonville in 1907. A few years later, the locomotive apparently went to locomotive rebuilder/reseller Southern Iron & Equipment for a rebuild, but remained with the T& J. In 1927, the T&J was once again renamed, this time as Gainesville, Rocky Point & Micanopy.

The 100 remained on the road through all of the changes and was only scrapped after the GRP&M was abandoned in 1944.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID16,235
RailroadGainesville & Gulf
Number in Class1
Road Numbers100
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 8.50 / 2.59
Engine Wheelbase (ft / m)22.75 / 6.93
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)56,000 / 25,401
Engine Weight (lbs / kg)85,000 / 38,555
Tender Loaded Weight (lbs / kg)70,000 / 27,216
Total Engine and Tender Weight (lbs / kg)155,000 / 65,771
Tender Water Capacity (gals / ML)3500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)47 / 23.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)56 / 1422
Boiler Pressure (psi / kPa)190 / 13.10
High Pressure Cylinders (dia x stroke) (in / mm)16" x 24" / 406x610
Tractive Effort (lbs / kg)17,719 / 8037.21
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.16
Heating Ability
Firebox Area (sq ft / m2)118.90 / 11.05
Grate Area (sq ft / m2)16.50 / 1.53
Evaporative Heating Surface (sq ft / m2)1159 / 107.67
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1159 / 107.67
Evaporative Heating Surface/Cylinder Volume207.52
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3135
Same as above plus superheater percentage3135
Same as above but substitute firebox area for grate area22,591
Power L15568
Power MT438.40

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Wes Barris