Williamsport & North Branch 2-8-0 "Consolidation" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 4 (Locobase 11740)

Data from Baldwin Locomotive Works Specification for Engines, 1890, as digitized by the DeGolyer Library of Southern Methodist University Vol 18, p. 108. Works numbers were 13049 in November 1892, 13481 in June 1893, and 13855 in December.

These Wootten-boilered drag freighters served a northern Pennsylvania short-line that remained independent from its incorporation in 1872 to its closing in 1937.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID11,740
RailroadWilliamsport & North Branch
Number in Class3
Road Numbers4-5, 7
Number Built3
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)13.67 / 4.17
Engine Wheelbase (ft / m)21.75 / 6.63
Ratio of driving wheelbase to overall engine wheebase 0.63
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)110,000 / 49,895
Engine Weight (lbs / kg)125,000 / 56,699
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)3500 / 13.26
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)46 / 23
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)50 / 1270
Boiler Pressure (psi / kPa)160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)20" x 24" / 508x610
Tractive Effort (lbs / kg)26,112 / 11844.22
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.21
Heating Ability
Firebox Area (sq ft / m2)155 / 14.41
Grate Area (sq ft / m2)63.30 / 5.88
Evaporative Heating Surface (sq ft / m2)1928 / 179.18
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1928 / 179.18
Evaporative Heating Surface/Cylinder Volume220.93
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation10,128
Same as above plus superheater percentage10,128
Same as above but substitute firebox area for grate area24,800
Power L14130
Power MT331.09

All material Copyright © SteamLocomotive.com
Wes Barris