Chronister Lumber Company / Conway Lumber Company 2-6-2 "Prairie" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 4 (Locobase 14043)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 45, p. 30. See also "Timber and Turpentine Industries" presented at the Horry County Historical Society at [] (last accessed 10 April 2012). Works number was 41293 in April 1914.

Baldwin built this small, wood-burning logging Prairie design for several lumber companies in early 1914. Conway's town was located in Horry County, just west of the coastline that would later be well-known as Myrtle Beach. The main line ran 16 miles to Aynor.

According to the Horry County Historical Society, "The Conway Lumber Company built its tramroads into the wilderness of the Little Pee Dee Swamps and connected with the Conway, Seashore and Western Railroad to bring its logs into the mill at Conway." The HCHS account adds this graphic note: "Franklin G. Burroughs, who died in 1996, told of seeing logs of a diameter greater than the height of a man."

Class 8 (Locobase 14947)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 62, p. 316+. See also Christopher Long, "CHRONISTER, TX," Handbook of Texas Online ([]), accessed February 17, 2013. Published by the Texas State Historical Association and Works number was 55125 in November 1921.

Harris Lipsitz Lumber bought this mixed-fuel logging Prairie that could burn either coal or wood. The latter fuel called for a Rushton Improved cabbage stack.

Chronister, Texas was located in Cherokee County and supported a sawmill fror 49 years from 1896 to 1944. Given the usual outcome of logging operations, it's surprising to see that Chronister, which was absorbed by nearby Wildhurst, Tex in 1910 has disappeared. According to Christopher Long's entry in the Handbook of Texas: "Both were gone by the early 1990s, when the surrounding area was covered with dense forests."

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID14,043 14,947
RailroadConway Lumber CompanyChronister Lumber Company
Number in Class11
Road Numbers48
Number Built11
Valve GearStephensonWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.83 / 2.39 9.17 / 2.80
Engine Wheelbase (ft / m)20.58 / 6.2723.75 / 7.24
Ratio of driving wheelbase to overall engine wheebase 0.38 0.39
Overall Wheelbase (engine & tender) (ft / m)39.77 / 12.1245.56 / 13.89
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)40,000 / 18,14470,000 / 31,752
Engine Weight (lbs / kg)55,000 / 24,94893,500 / 42,411
Tender Loaded Weight (lbs / kg)40,000 / 18,14470,000 / 31,752
Total Engine and Tender Weight (lbs / kg)95,000 / 43,092163,500 / 74,163
Tender Water Capacity (gals / ML)2000 / 7.583500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)6 / 5.50
Minimum weight of rail (calculated) (lb/yd / kg/m)22 / 1139 / 19.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)36 / 91444 / 1118
Boiler Pressure (psi / kPa)170 / 11.70180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)12" x 16" / 305x40615" x 24" / 381x610
Tractive Effort (lbs / kg)9248 / 4194.8318,777 / 8517.11
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.33 3.73
Heating Ability
Firebox Area (sq ft / m2)56 / 5.2083 / 7.71
Grate Area (sq ft / m2)14 / 1.3014.10 / 1.31
Evaporative Heating Surface (sq ft / m2)438 / 40.691071 / 99.50
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)438 / 40.691071 / 99.50
Evaporative Heating Surface/Cylinder Volume209.13218.18
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation23802538
Same as above plus superheater percentage23802538
Same as above but substitute firebox area for grate area952014,940
Power L134973996
Power MT578.22377.56

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Wes Barris