Elk River Mill & Lumber Company 0-4-4 "Forney" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 2 (Locobase 12682)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 25 p. 284. Works number was 22319 in June 1903

One of the many logging roads in northern California's Redwood Coast, the ERM & LC was founded near Eureka by the Flak family in 1860 and remained under their control until 1915.

At some point in the 19'teens, the ERM&LC sold the 2 to the OG Leach Lumber Company of Lottie, Louisiana. OG Leach sold the engine to the locomotive rebuilder/reseller Southern Iron & Equipment in 1918. SI&E soon persuaded Baker Wakefield Cypress of Plattville, La to buy it, then BWC sold it to Bond-Foley Lumber of Jackson, Kentucky, BFL sold it back to SI&E in 1924, and SI&E sold it to Woodstock Slag Company of Woodward, Ala.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID12682
RailroadElk River Mill & Lumber Company
Number in Class1
Road Numbers2
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)5 / 1.52
Engine Wheelbase (ft / m)14.67 / 4.47
Ratio of driving wheelbase to overall engine wheelbase 0.34
Overall Wheelbase (engine & tender) (ft / m)14.67 / 4.47
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)28,000 / 12,701
Engine Weight (lbs / kg)38,000 / 17,237
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)38,000
Tender Water Capacity (gals / ML)400 / 1.52
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)23 / 11.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)33 / 838
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)9" x 16" / 229x406
Tractive Effort (lbs / kg)5341 / 2422.64
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.24
Heating Ability
Tubes (number - dia) (in / mm)75 - 1.5" / 38
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 7.42 / 2.26
Firebox Area (sq ft / m2)36 / 3.35
Grate Area (sq ft / m2) 8.20 / 0.76
Evaporative Heating Surface (sq ft / m2)252 / 23.42
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)252 / 23.42
Evaporative Heating Surface/Cylinder Volume213.56
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1312
Same as above plus superheater percentage1312
Same as above but substitute firebox area for grate area5760
Power L13222
Power MT507.38

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