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


Class Details by Steve Llanso of Sweat House Media

Class 35 (Locobase 15231)

Data from DeGolyer, Vol 71, pp.323+. (Thanks to Stephen Low for his 13 October 2017 email establishing PALCO's corporate and operating iindependence.) Works number was 57538 in November 1923.

An oil-burning Mikado similar to several others that like the others had at times to use the common-carrier tracks of the Northwestern Pacific as well as its own lines. So it was sized and equipped to fit in with the medium-sized freight engines it would encounter. The piston valves had a relatively large diameter of 12" (306 mm).

Stephen Low fleshed out Pacific Lumber's identity when he commented: "PALCO was a great family owned company that had a sustainable logging system until it was subject to a hostile corporate takeover that liquidated its assets into bankruptcy by 2006."

Still, PALCO's own tracks were more like the logging roads to which Baldwin supplied hundreds of locomotives. Rail weight was a light 60 lb/yard (30 kg/meter) and curves could bend as much as 25 degrees. It was guaranteed to haul 14 cars of 15 short tons (13.6 metric tonnes) each up a straight grade of not over 4 1/2% and the resistance of the compensated grade with curves would not be any greater than a straight grade.

The 35 operated out of PALCO headquarters at Scotia, Calif until it was sold to February 1966 to Edward and Julius Nervo. They sold the 35 to Gunner Henriolle in January 1968. Soon the 35 wound up on the Wasatch Mountain Railroad, the line of the Heber Creeper.

Specifications by Steve Llanso of Sweat House Media
Class35
Locobase ID15,231
RailroadPacific Lumber Company (PALCO)
CountryUSA
Whyte2-8-2
Number in Class1
Road Numbers35
GaugeStd
Number Built1
BuilderBaldwin
Year1923
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.08 / 3.99
Engine Wheelbase (ft / m)27.08 / 8.25
Ratio of driving wheelbase to overall engine wheebase 0.48
Overall Wheelbase (engine & tender) (ft / m)55.71 / 16.98
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)141,500 / 64,183
Engine Weight (lbs / kg)179,000 / 81,193
Tender Loaded Weight (lbs / kg)90,000 / 40,823
Total Engine and Tender Weight (lbs / kg)269,000 / 122,016
Tender Water Capacity (gals / ML)4500 / 17.05
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)1500 / 5.70
Minimum weight of rail (calculated) (lb/yd / kg/m)59 / 29.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)20.5" x 28" / 521x711
Tractive Effort (lbs / kg)37,507 / 17012.91
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.77
Heating Ability
Firebox Area (sq ft / m2)154 / 14.31
Grate Area (sq ft / m2)41.30 / 3.84
Evaporative Heating Surface (sq ft / m2)2476 / 230.03
Superheating Surface (sq ft / m2)553 / 51.37
Combined Heating Surface (sq ft / m2)3029 / 281.40
Evaporative Heating Surface/Cylinder Volume231.48
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation7434
Same as above plus superheater percentage8772
Same as above but substitute firebox area for grate area32,710
Power L111,070
Power MT689.90