Vredenburgh Saw Mill Company 2-8-0 "Consolidation" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 12 (Locobase 14972)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 65, pp. 317+. Works number was 54431 in January 1921.

Seven years after this Alabama sawmill purchased a Ten-wheeler from Baldwin (Locobase 14055), it bought this somewhat larger logging Consolidation from Eddystone. As its dimensions suggest, the 12's main role was straight freight service on the Georgia, Florida & Alabama Railroad. It still had to contend with 58 lb/yard (29 kg/metre) rail and curves as tight as 25 degrees (radii of 231 feet/70.4 metres).

Specifications by Steve Llanso of Sweat House Media
Locobase ID14972
RailroadVredenburgh Saw Mill Company
Number in Class1
Road Numbers12
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase14'
Engine Wheelbase21.67'
Ratio of driving wheelbase to overall engine wheebase 0.65
Overall Wheelbase (engine & tender)51.58'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers121000 lbs
Engine Weight134400 lbs
Tender Light Weight107700 lbs
Total Engine and Tender Weight242100 lbs
Tender Water Capacity5000 gals
Tender Fuel Capacity (oil/coal)9 tons
Minimum weight of rail (calculated)50 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter50"
Boiler Pressure200 psi
Cylinders (dia x stroke)19" x 24"
Tractive Effort29458 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.11
Heating Ability
Firebox Area132 sq. ft
Grate Area27.50 sq. ft
Evaporative Heating Surface1622 sq. ft
Superheating Surface
Combined Heating Surface1622 sq. ft
Evaporative Heating Surface/Cylinder Volume205.95
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5500
Same as above plus superheater percentage5500
Same as above but substitute firebox area for grate area26400
Power L14829
Power MT351.94

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