This lumber company was based in Doucette, Texas and clearly had some money - at least enough to buy four small wood-burning Prairies. The relatively light tenders held only 2 1/4 cords of wood.
They logged about 38,500 acres of timber in Tyler County. The 6 worked for the Thompson & Tucker Lumber Company. 11 and 12 were eventually sold to the Rock Creek Lumber Company of Trinity, Texas, which was bought out by Texas Long-Leaf Lumber Company.
When this Texas timber company came back to Baldwin for another locomotive, they opted for a larger engine than the design they'd stocked up with in 1910-1911 (Locobase 13642). It too was a wood-burner and its tender held 3 1/2 cords of wood.
In its first couple of years of service, the 100 served several lumber companies in the area, starting with Rock Creek Lumber of New Willard, then its parent Texas Long Leaf Lumber. Texas Long Leaf's Burton Swartz Supply sold the 100 to Carbur Logging.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Thompson Brothers Lumber Company||Thompson Brothers Logging Company|
|Number in Class||4||1|
|Road Numbers||10, 6, 11-12||100|
|Locomotive Length and Weight|
|Ratio of driving wheelbase to overall engine wheebase||0.39||0.37|
|Overall Wheelbase (engine & tender)||48.83'|
|Axle Loading (Maximum Weight per Axle)|
|Weight on Drivers||63300 lbs||88000 lbs|
|Engine Weight||87600 lbs||117500 lbs|
|Tender Light Weight||60000 lbs||80000 lbs|
|Total Engine and Tender Weight||147600 lbs||197500 lbs|
|Tender Water Capacity||3000 gals||4000 gals|
|Tender Fuel Capacity (oil/coal)|
|Minimum weight of rail (calculated)||35 lb/yard||49 lb/yard|
|Geometry Relating to Tractive Effort|
|Boiler Pressure||180 psi||170 psi|
|Cylinders (dia x stroke)||15" x 20"||16" x 24"|
|Tractive Effort||16793 lbs||20177 lbs|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||3.77||4.36|
|Firebox Area||93 sq. ft||120 sq. ft|
|Grate Area||14 sq. ft||15.60 sq. ft|
|Evaporative Heating Surface||1000 sq. ft||1602 sq. ft|
|Combined Heating Surface||1000 sq. ft||1602 sq. ft|
|Evaporative Heating Surface/Cylinder Volume||244.46||286.84|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||2520||2652|
|Same as above plus superheater percentage||2520||2652|
|Same as above but substitute firebox area for grate area||16740||20400|