Sugar Pine Lumber Co 2-8-2 "Mikado" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 1312)

Data from Bruce (1952). Note that former Coos Bay Lumber Company 2-8-2STs 10 and 11 (Alco works # 68548 in December 1930 and 68276 from December 1929, respectively, seem to be the same design.)

Last of three Mikado tanks for this lumber company and more powerful than the other two. Sugar Pine's bankruptcy in the early 1930s led to the sale of #4 to Pacific Lumber Company and operated as #37 from 1935-1962.

Purchased for tourist railroad WaWa & Concordville where it operated briefly in the late 1960s, bought in 1980 by the Wilmington & Western in Marshallton , DE. Stored there until repairs (1983-1987) made it possible to re-enter service in 1987. In 1990 a dispute over who was to pay for needed repairs idled the locomotive.

In May 2003, the Timber Heritage Museum of Eureka, Calif contracted to buy the 37. In Spring 2006, the locomotive was delivered to the Strasburg Railroad in Pennsylvania to begin a leisurely restoration.

Specifications by Steve Llanso of Sweat House Media
Locobase ID1312
RailroadSugar Pine Lumber Co
Number in Class1
Road Numbers4
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)13 / 3.96
Engine Wheelbase (ft / m)28.09 / 8.56
Ratio of driving wheelbase to overall engine wheebase 0.46
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)148,500 / 67,359
Engine Weight (lbs / kg)197,500 / 89,585
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)197,500
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)62 / 31
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)20" x 24" / 508x610
Tractive Effort (lbs / kg)35,236 / 15982.80
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.21
Heating Ability
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)31 / 2.88
Evaporative Heating Surface (sq ft / m2)1635 / 151.95
Superheating Surface (sq ft / m2)347 / 32.25
Combined Heating Surface (sq ft / m2)1982 / 184.20
Evaporative Heating Surface/Cylinder Volume187.36
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5890
Same as above plus superheater percentage6950
Same as above but substitute firebox area for grate area
Power L1
Power MT