Manchester Saw Mills 2-6-2 "Prairie" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 4 (Locobase 14127)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 43, p. 239. Works number was 39381 in February 1913.

The Manchester Saw Mills operated about 6.5 miles of track between Manchester, Ala and Sunlight and sometimes operated logging trains on the nearby Alabama Central Railroad. MSM told the AC in January 1926 that it had finished logging timber in the area. It then sold the 4 to locomotive rebuilder/reseller Birmingham Rail & Locomotive in October 1926. BR&L would sell the 4 more than two years later to Gibson Justis Co in May 1929 as their #12.

Principal Dimensions by Steve Llanso of Sweat House Media
Class4
Locobase ID14,127
RailroadManchester Saw Mills
CountryUSA
Whyte2-6-2
Number in Class1
Road Numbers4
GaugeStd
Number Built1
BuilderBaldwin
Year1913
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)44.33 / 13.51
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)56,500 / 25,628
Engine Weight (lbs / kg)76,500 / 34,700
Tender Loaded Weight (lbs / kg)51,000 / 23,133
Total Engine and Tender Weight (lbs / kg)127,500 / 57,833
Tender Water Capacity (gals / ML)2500 / 9.47
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT) 3.50 / 3.20
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) 4.42
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 MT468.59