Long Bell Lumber Company 2-6-6-2 "Mallet Mogul" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class 1000 (Locobase 4056)

Data from http://loggingmallets.railfan.net, supplemented by DeGolyer, Vol . 71, p. 288+. Works numbers were 57597-57598 in January 1924.

The Baldwin specs showed that this rather large articulated was expected to negotiate curves of 40 degrees (146 foot/44.5 metre radii), and conquering grades of 6% and 7%. 8" (203 mm) piston valves served the HP cylinders, 12" (305 mm) piston valves directed the HP exhaust steam to the LP cylinders.

These engines ran on Long Bell property out of Ryderwood, Wash., for their entire working lives. Both were scrapped in the mid-50s.

Specifications by Steve Llanso of Sweat House Media
Class1000
Locobase ID4056
RailroadLong Bell Lumber Company
CountryUSA
Whyte2-6-6-2
Number in Class2
Road Numbers1000-1001
GaugeStd
Number Built2
BuilderBaldwin
Year1924
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)8 / 2.44
Engine Wheelbase (ft / m)23.67 / 7.21
Ratio of driving wheelbase to overall engine wheebase 0.34
Overall Wheelbase (engine & tender) (ft / m)64.06 / 19.53
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)174,000 / 78,925
Engine Weight (lbs / kg)200,000 / 90,719
Tender Loaded Weight (lbs / kg)99,000 / 44,906
Total Engine and Tender Weight (lbs / kg)299,000 / 135,625
Tender Water Capacity (gals / ML)5000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)1500 / 5.70
Minimum weight of rail (calculated) (lb/yd / kg/m)48 / 24
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)44 / 1118
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Low Pressure Cylinders (dia x stroke) (in / mm)28" x 24" / 711x610
Tractive Effort (lbs / kg)42,517 / 19285.41
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.09
Heating Ability
Firebox Area (sq ft / m2)160 / 14.86
Grate Area (sq ft / m2)31.50 / 2.93
Evaporative Heating Surface (sq ft / m2)1927 / 179.02
Superheating Surface (sq ft / m2)466 / 43.29
Combined Heating Surface (sq ft / m2)2393 / 222.31
Evaporative Heating Surface/Cylinder Volume272.61
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation6300
Same as above plus superheater percentage7497
Same as above but substitute firebox area for grate area38,080
Power L15935
Power MT451.19