St Croix Timber Company 2-6-2 "Prairie" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 13955)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 43, p. 269 . Works number was 39005 in January 1913.

St Croix Timber of New Richmond, Wisc was located in Douglas County in the extreme northwestern part of the Badger State as part of the Empire Lumber Company's ....empire. As with most logging Prairie engines, the 1 had several owners. In this case, all of the owners were in Wisconsin. In 1915, she was passed on to Mellen Lumber of Mellen, Wisc as their #5. In 1928, Mellen sold the 5 to Roddis Lumber & Veneer of Marshfield, which upgraded the 5's road number to 7.

RL &V operated the engine for about a decade, then sold it to locomotive rebuilder/reseller Southern Iron & Equipment in 1938. Apparently, the engine lay dormant for almost a decade before going to work for Dells Paper & Pulp of Eau Claire, Wisconsin.

Specifications by Steve Llanso of Sweat House Media
Locobase ID13955
RailroadSt Croix Timber Company
Number in Class1
Road Numbers1
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 9.17'
Engine Wheelbase24.67'
Ratio of driving wheelbase to overall engine wheebase 0.37
Overall Wheelbase (engine & tender)46.73'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers82500 lbs
Engine Weight110500 lbs
Tender Light Weight50500 lbs
Total Engine and Tender Weight161000 lbs
Tender Water Capacity2500 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)46 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter44"
Boiler Pressure160 psi
Cylinders (dia x stroke)16" x 24"
Tractive Effort18991 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.34
Heating Ability
Firebox Area118 sq. ft
Grate Area16 sq. ft
Evaporative Heating Surface1600 sq. ft
Superheating Surface
Combined Heating Surface1600 sq. ft
Evaporative Heating Surface/Cylinder Volume286.48
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2560
Same as above plus superheater percentage2560
Same as above but substitute firebox area for grate area18880
Power L14601
Power MT368.85

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