Birmingham Southern 2-6-0 "Mogul" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 7 (Locobase 11871)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 13. p 222. Works number 8526 in April 1887.

This single, relatively powerful Mogul for its time was sold to the Birmingham Southern at some point as 11. At some later date, the railroad's owner, TCI & RR renumbered it as 172.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID11,871
RailroadBirmingham Southern (TCI&R)
Number in Class1
Road Numbers7
Number Built1
BuilderBurnham, Parry, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)14 / 4.27
Engine Wheelbase (ft / m)22 / 6.71
Ratio of driving wheelbase to overall engine wheebase 0.64
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)31,850 / 14,447
Weight on Drivers (lbs / kg)93,625 / 42,468
Engine Weight (lbs / kg)110,580 / 50,158
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)2650 / 10.04
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)52 / 26
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)50 / 1270
Boiler Pressure (psi / kPa)130 / 9
High Pressure Cylinders (dia x stroke) (in / mm)20" x 24" / 508x610
Tractive Effort (lbs / kg)21,216 / 9623.43
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.41
Heating Ability
Firebox Area (sq ft / m2)157.40 / 14.63
Grate Area (sq ft / m2)23.90 / 2.22
Evaporative Heating Surface (sq ft / m2)1592 / 147.96
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1592 / 147.96
Evaporative Heating Surface/Cylinder Volume182.43
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3107
Same as above plus superheater percentage3107
Same as above but substitute firebox area for grate area20,462
Power L12953
Power MT208.61

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Wes Barris