J F Darby Lumber Company 4-6-0 "Ten-Wheeler" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 167 (Locobase 14699)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 62, p. 327+. Works number was 52922 in January 1920.

This logging Ten-wheeler was sold in March 1927 to locomotive rebuilder/reseller Georgia Car & Locomotive, which sold it in October 1928 to Groveland, Florida's J Ray Arnold. The lumber company later sold it to the Macon, Dublin & Savannah, which was then part of the Seaboard Air Line.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID14,699
RailroadJ F Darby Lumber Company
Number in Class1
Road Numbers167 / 110
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)11.33 / 3.45
Engine Wheelbase (ft / m)22.17 / 6.76
Ratio of driving wheelbase to overall engine wheebase 0.51
Overall Wheelbase (engine & tender) (ft / m)50.08 / 15.26
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)98,500 / 44,679
Engine Weight (lbs / kg)126,500 / 57,380
Tender Loaded Weight (lbs / kg)100,000 / 45,359
Total Engine and Tender Weight (lbs / kg)226,500 / 102,739
Tender Water Capacity (gals / ML)5000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)8 / 7.30
Minimum weight of rail (calculated) (lb/yd / kg/m)55 / 27.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)57 / 1448
Boiler Pressure (psi / kPa)185 / 12.80
High Pressure Cylinders (dia x stroke) (in / mm)18" x 26" / 457x660
Tractive Effort (lbs / kg)23,240 / 10541.50
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.24
Heating Ability
Firebox Area (sq ft / m2)127 / 11.80
Grate Area (sq ft / m2)25.10 / 2.33
Evaporative Heating Surface (sq ft / m2)1783 / 165.64
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1783 / 165.64
Evaporative Heating Surface/Cylinder Volume232.84
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4644
Same as above plus superheater percentage4644
Same as above but substitute firebox area for grate area23,495
Power L15550
Power MT372.66

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