Chattahoochee Valley 4-6-0 "Ten-wheeler" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 7 (Locobase 13174)

Data from Baldwin Locomotive Works Specification for Engines, 1903, as digitized by the DeGolyer Library of Southern Methodist University, Volume 31, p. Works numbers were 32219 in November 1907 and 38053 in July 1912.

Possibly because the 1907 Panic hit revenues, the last of an order of Ten-wheelers for the Midland Valley (Locobase 12859) was sold to the CVRR as their #7. The CVR served several cotton mills along the west bank of the river from West Point, Ga due south ultimately to Bleeker (27 miles) and north to Standing Rock, Ala. It opened in 1897.

The CVRR went back to Baldwin 5 years later to buy a sister to the 7. The 9's specs stated that the "wearing parts" were to be interchangeable with the 7, a requirement that simplified maintenance on a small road.

The 7 did wind up on the Midland, but the 9 found a new home at the Tennessee & North Carolina.

Specifications by Steve Llanso of Sweat House Media
Locobase ID13174
RailroadChattahoochee Valley
Number in Class2
Road Numbers7, 9
Number Built2
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase11.33'
Engine Wheelbase21.58'
Ratio of driving wheelbase to overall engine wheebase 0.53
Overall Wheelbase (engine & tender)51.96'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers97000 lbs
Engine Weight122000 lbs
Tender Light Weight100000 lbs
Total Engine and Tender Weight222000 lbs
Tender Water Capacity5000 gals
Tender Fuel Capacity (oil/coal)10.8 tons
Minimum weight of rail (calculated)54 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter58"
Boiler Pressure190 psi
Cylinders (dia x stroke)18" x 24"
Tractive Effort21652 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.48
Heating Ability
Firebox Area145 sq. ft
Grate Area22.20 sq. ft
Evaporative Heating Surface1796 sq. ft
Superheating Surface
Combined Heating Surface1796 sq. ft
Evaporative Heating Surface/Cylinder Volume254.08
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4218
Same as above plus superheater percentage4218
Same as above but substitute firebox area for grate area27550
Power L16550
Power MT446.61

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