Wrightsville & Tennille 4-4-0 "American" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 9 (Locobase 7937)

Data from CofGa 12 - 1925 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works number was 23233 in November 1903. See Rail Georgia's excellent "biography" of the W & T.

This Georgia railroad often bought locomotives from railroads such as the Central of Georgia when those bigger operations no longer needed such relatively dinky engines. In this case, however, Baldwin delivered an Eight-wheeler to the W & T, which at the time was a 75-mile line that had Tennille at one end and dipped down and to the West well past Wrightsville and through Dublin to Hawkinsville at the other. The "Wiggle and Twist" earned its nickname for its curvy alignment.

The W & T operated the #9 for 20 years, then sold it to the C of Ga, which ran it for another 11 years before scrapping it in November 1934.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID7937
RailroadWrightsville & Tennille
Number in Class1
Road Numbers9 / 1587 / 355
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.08 / 2.77
Engine Wheelbase (ft / m)23.92 / 7.29
Ratio of driving wheelbase to overall engine wheebase 0.38
Overall Wheelbase (engine & tender) (ft / m)46.45 / 14.16
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)72,000 / 32,659
Engine Weight (lbs / kg)112,000 / 50,802
Tender Loaded Weight (lbs / kg)62,000 / 28,123
Total Engine and Tender Weight (lbs / kg)174,000 / 78,925
Tender Water Capacity (gals / ML)3000 / 11.36
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)7 / 6.40
Minimum weight of rail (calculated) (lb/yd / kg/m)60 / 30
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)62 / 1575
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)17,057 / 7736.93
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.22
Heating Ability
Firebox Area (sq ft / m2)148 / 13.75
Grate Area (sq ft / m2)18.60 / 1.73
Evaporative Heating Surface (sq ft / m2)1650 / 153.35
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1650 / 153.35
Evaporative Heating Surface/Cylinder Volume233.43
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2976
Same as above plus superheater percentage2976
Same as above but substitute firebox area for grate area23,680
Power L15590
Power MT342.33