Lamm Lumber Company 2-8-2 "Mikado" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 15495)

Data from DeGolyer, Vol 80, pp. 522. See also W E Lamm, Lumbering in Klamath. Works number was 61306 in April 1930.

Oil-burning logging Mikado that served this Modoc Point, Ore (near Klamath Falls) enterprise. W E Lamm incorporated the lumber company in 1914. Long-Bell Lumber made frequent use of the Lamm Lumber railroad to move the logs it harvested from northern Klamath County. Opened in 1915, Lamm Lumber remained open until 1944, closing a year after several other well-known timber harvesters in the same area.

Like most later Baldwin logging 2-8-2s, the 3 was superheated. It used 10" (254 mm) piston valves. Its large tender suggests longer than usual runs for a timber harvester. Maximum grade reached 7% and curves bent at 25 degrees maximum (radii of 229 feet) over a 50-mile (80 km) network of main and logging roads.

In 1944, Lamm Lumber sold the 3 to the California Western Railroad, which gave it number 44. After 8 more years, the engine was scrapped in April 1952.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID15495
RailroadLamm Lumber Company
Number in Class1
Road Numbers3
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12.08 / 3.68
Engine Wheelbase (ft / m)28.50 / 8.69
Ratio of driving wheelbase to overall engine wheebase 0.42
Overall Wheelbase (engine & tender) (ft / m)57.12 / 17.41
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)127,000 / 57,606
Engine Weight (lbs / kg)156,000 / 70,760
Tender Loaded Weight (lbs / kg)124,000 / 56,246
Total Engine and Tender Weight (lbs / kg)280,000 / 127,006
Tender Water Capacity (gals / ML)6000 / 22.73
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)2000 / 7.60
Minimum weight of rail (calculated) (lb/yd / kg/m)53 / 26.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)190 / 13.10
High Pressure Cylinders (dia x stroke) (in / mm)19" x 24" / 483x610
Tractive Effort (lbs / kg)31,801 / 14424.71
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.99
Heating Ability
Firebox Area (sq ft / m2)158 / 14.68
Grate Area (sq ft / m2)29 / 2.69
Evaporative Heating Surface (sq ft / m2)1700 / 157.93
Superheating Surface (sq ft / m2)356 / 33.07
Combined Heating Surface (sq ft / m2)2056 / 191
Evaporative Heating Surface/Cylinder Volume215.85
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5510
Same as above plus superheater percentage6447
Same as above but substitute firebox area for grate area35,123
Power L110,073
Power MT699.44

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