Frost-Johnson Lumber Company 2-8-2 "Mikado" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 45 (Locobase 14945)

Data from DeGolyer, Volume 65, pp. 126+. See also "With Frost at Nacogdoches", Gulf Coast Lumberman, 1 February 1938, archived in the Texas Transporation Archives at [link], last accessed 3 December 2022..Works number was 56726 in June 1923.

One of the first non wood-burners on the F-J system, the 45 burned oil instead. Moreover, since the engine was superheated, the design adopted 10" (254 mm) piston valves for steam admission.

Soon after its arrival, the 45 transferred to Frost Lumber's Nacogdoches, Texas site, which FLC bought from Hayward Lumber Company in 1910 after the latter built the mill bigger and better following a 1909 fire.At the time of the 1938 article, the author described the site's current status:

"They still have large stumpage holdings of their own, and in addition are daily offered large quantities of excellent logs for sale, that are hauled from all parts of the Nacogdoches territory. Like most of the big mills of this territory, so great has this business become that they have arranged suitable unloading facilities and docks for trucks bringing in logs. That they will be operating for many years is already certain."

The 45 operated until scrapped there in 1950, presumably because the boom in business had ended..

Principal Dimensions by Steve Llanso of Middle Run Media
Class45
Locobase ID14945
RailroadFrost-Johnson Lumber Company
CountryUSA
Whyte2-8-2
Number in Class1
Road Numbers45
GaugeStd
Number Built1
BuilderBaldwin
Year1923
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.50 / 4.11
Engine Wheelbase (ft / m)29 / 8.84
Ratio of driving wheelbase to overall engine wheelbase 0.47
Overall Wheelbase (engine & tender) (ft / m)54.79 / 16.70
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)118,000 / 53,524
Engine Weight (lbs / kg)149,000 / 67,585
Tender Loaded Weight (lbs / kg)98,000 / 44,452
Total Engine and Tender Weight (lbs / kg)247,000 / 112,037
Tender Water Capacity (gals / ML)4500 / 17.05
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)1800 / 6813
Minimum weight of rail (calculated) (lb/yd / kg/m)49 / 24.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)46 / 1168
Boiler Pressure (psi / kPa)180 / 1240
High Pressure Cylinders (dia x stroke) (in / mm)19" x 24" / 483x610
Tractive Effort (lbs / kg)28,817 / 13071.19
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.09
Heating Ability
Tubes (number - dia) (in / mm)170 - 2" / 51
Flues (number - dia) (in / mm)26 - 5.375" / 137
Flue/Tube length (ft / m)12 / 3.66
Firebox Area (sq ft / m2)154 / 14.31
Grate Area (sq ft / m2)29 / 2.70
Evaporative Heating Surface (sq ft / m2)1651 / 153.44
Superheating Surface (sq ft / m2)373 / 34.67
Combined Heating Surface (sq ft / m2)2024 / 188.11
Evaporative Heating Surface/Cylinder Volume209.52
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5220
Same as above plus superheater percentage6160
Same as above but substitute firebox area for grate area32,710
Power L110,119
Power MT756.22

All material Copyright © SteamLocomotive.com
Wes Barris