Moore Timber 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 5 (Locobase 13949)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 43, p. 249 and 45, p. 34.. works numbers were 38627 in November 1912 and 40943 in November 1913.

These were typical wood-burning logging Prairies fitted with 13" diameter Radley & Hunter stacks, whose spark-arresting efficiency was explicitly required to have "special attention." Also indicative of the less-than-mainline operating conditions was the provision that "Plenty of play to be allowed for spring hangers and equalizers, on account of rough track. Equalizing beams to have oil holes for pins at bearings, pins of ample size, case hardened."

Principal Dimensions by Steve Llanso of Sweat House Media
Class5
Locobase ID13,949
RailroadMoore Timber
CountryUSA
Whyte2-6-2
Number in Class2
Road Numbers5, 3
GaugeStd
Number Built2
BuilderBaldwin
Year1912
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)8 / 2.44
Engine Wheelbase (ft / m)22.75 / 6.93
Ratio of driving wheelbase to overall engine wheebase 0.35
Overall Wheelbase (engine & tender) (ft / m)43.96 / 13.40
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)56,000 / 25,401
Engine Weight (lbs / kg)76,000 / 34,473
Tender Loaded Weight (lbs / kg)50,000 / 22,680
Total Engine and Tender Weight (lbs / kg)126,000 / 57,153
Tender Water Capacity (gals / ML)2500 / 9.47
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)31 / 15.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)170 / 11.70
High Pressure Cylinders (dia x stroke) (in / mm)13" x 22" / 330x559
Tractive Effort (lbs / kg)12,792 / 5802.36
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.38
Heating Ability
Firebox Area (sq ft / m2)74 / 6.87
Grate Area (sq ft / m2)13.30 / 1.24
Evaporative Heating Surface (sq ft / m2)767 / 71.26
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)767 / 71.26
Evaporative Heating Surface/Cylinder Volume226.94
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2261
Same as above plus superheater percentage2261
Same as above but substitute firebox area for grate area12,580
Power L14003
Power MT472.77