Bagdad Land & Lumber Company / Benson Logging & Lumber Company 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 14 (Locobase 14265)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Vol 62, p. 343+ and Vol 73, pp. 283+. (Many thanks to Chris Hohl's 4 August 2015 email providing the tender's wood capacity and his comments on Harbeson company numbers prompted a review of several entries.) Works numbers were 52795-52796 in January 1920 and 57915 in July 1924.

Locobase 14262 shows the first three wood-burning logging Prairies that went to DeFuniak Springs, Fla in 1916 to work for the WB Harbeson Lumber Company. The next trio, which arrived in 1920, repeated the design, but trailed a heavier tender with the same 3-cord wood capacity and put a little more weight on the drivers. The 1924 engine (#11) also followed the pattern, but had a still large tender with 4 cords of wood (about 9,200 lb/4,173 kg of pine fuel).

Their assignment to Bagdad Land & Lumber Company underscored their primary service of supplying a 200,000 foot capacity mill in Bagdad, Fla.. Over the next decade, BL&LC increased the mill capacity to 300,000 feet.

The four remained with W B Harbeson through its 1936 reorganization as West Florida Lumber. 14-15 were later renumbered 128-129 by Harbeson.


Class 17 (Locobase 14266)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 62, p. 343+. (Many thanks to Chris Hohl's 4 August 2015 email providing the tender's wood capacity and his comments on Harbeson company numbers prompted a review of several entries.) Works number was 52920 in January 1920.

Locobase 14265 shows the three 1920 logging Prairie wood-burners that succeeded the earlier engines. This oil-burner repeated the design except for trailing a heavier tender that carried oil. It too was owned by W B Harbeson and served the Bagdad (Fla) mill.

The 17 was later sold to the St Joe Lumber & Export Company, which it served until being scrapped, probably in 1950.


Class 7 (Locobase 12915)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 28, p. 233 . Works number was 27379 in in January 1906.

This lumber company was headquartered in Oak Point, Washington. At almost the same time they took delivery of this small Prairie, the company was bought by a group of Wisconsin timbermen who had formed the Wisconsin Logging & Timber Company.

The WL&T sold the 7 to Weed Lumber in December 1919.


Class 8 (Locobase 12916)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 29, p. 238 . Works number was 29822 in January 1906.

Slightly larger and rolling on a longer wheelbase than the Benson Timber #7 (Locobase 12915), this Prairie soon transferred to Benson Timber rails that ran out of Clatskanie, Ore. Wisconsion Logging & Timber eventually owned all of the Benson Timber properties

Principal Dimensions by Steve Llanso of Sweat House Media
Class141778
Locobase ID14,265 14,266 12,915 12,916
RailroadBagdad Land & Lumber CompanyBagdad Land & Lumber CompanyBenson Logging & Lumber CompanyBenson Logging & Lumber Company
CountryUSAUSAUSAUSA
Whyte2-6-22-6-22-6-22-6-2
Number in Class4111
Road Numbers14-16, 11/128-129, 16, 111778
GaugeStdStdStdStd
Number Built4111
BuilderBaldwinBaldwinBurnham, Williams & CoBurnham, Williams & Co
Year1920192019061906
Valve GearWalschaertWalschaertStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m) 9.17 / 2.80 9.17 / 2.80 7.67 / 2.34 9.17 / 2.80
Engine Wheelbase (ft / m)23.75 / 7.2423.75 / 7.2423.83 / 7.2624.67 / 7.52
Ratio of driving wheelbase to overall engine wheebase 0.39 0.39 0.32 0.37
Overall Wheelbase (engine & tender) (ft / m)45.56 / 13.8945.56 / 13.89
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)71,000 / 32,20571,000 / 32,20579,790 / 36,19281,000 / 36,741
Engine Weight (lbs / kg)92,000 / 41,73192,000 / 41,731108,490 / 49,210110,500 / 50,122
Tender Loaded Weight (lbs / kg)70,000 / 31,75270,000 / 31,75258,000 / 26,30858,000 / 26,308
Total Engine and Tender Weight (lbs / kg)162,000 / 73,483162,000 / 73,483166,490 / 75,518168,500 / 76,430
Tender Water Capacity (gals / ML)3500 / 13.263500 / 13.262500 / 9.472500 / 9.47
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)1200
Minimum weight of rail (calculated) (lb/yd / kg/m)39 / 19.5039 / 19.5044 / 2245 / 22.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 111844 / 111844 / 111844 / 1118
Boiler Pressure (psi / kPa)180 / 12.40180 / 12.40180 / 12.40180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)15" x 24" / 381x61015" x 24" / 381x61016" x 24" / 406x61016" x 24" / 406x610
Tractive Effort (lbs / kg)18,777 / 8517.1118,777 / 8517.1121,364 / 9690.5621,364 / 9690.56
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.78 3.78 3.73 3.79
Heating Ability
Firebox Area (sq ft / m2)86 / 7.9986 / 7.99128 / 11.90128 / 11.90
Grate Area (sq ft / m2)14.10 / 1.3114.10 / 1.3116 / 1.4916 / 1.49
Evaporative Heating Surface (sq ft / m2)1074 / 99.781074 / 99.781567 / 145.631567 / 145.63
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1074 / 99.781074 / 99.781567 / 145.631567 / 145.63
Evaporative Heating Surface/Cylinder Volume218.79218.79280.57280.57
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2538253828802880
Same as above plus superheater percentage2538253828802880
Same as above but substitute firebox area for grate area15,48015,48023,04023,040
Power L14044404452165216
Power MT376.71376.71432.36425.90

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