Davenport stock 2-6-0 "Mogul" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class unknown (Locobase 15090)

Data from set of original DLW diagrams offered for sale on Ebay in March 2013.

The data for heating surface area and tube count or diameter are inconsistent. As laid out in the diagram, the evaporative heating surface area should add up to 1,458 sq ft.(135.45 sq m). It's possible that the tube diameter was actually 1 3/4" (44.5 mm), which would generate a total much closer to that given in the diagram.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID15,090
RailroadDavenport stock
Number in Class1
Road Numbers
Number Built1
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.50 / 4.42
Engine Wheelbase (ft / m)22 / 6.71
Ratio of driving wheelbase to overall engine wheebase 0.66
Overall Wheelbase (engine & tender) (ft / m)49.08 / 14.96
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)107,400 / 48,716
Engine Weight (lbs / kg)124,800 / 56,608
Tender Loaded Weight (lbs / kg)8000 / 3629
Total Engine and Tender Weight (lbs / kg)132,800 / 60,237
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)6 / 5.50
Minimum weight of rail (calculated) (lb/yd / kg/m)60 / 30
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)54 / 1372
Boiler Pressure (psi / kPa)170 / 11.70
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x610
Tractive Effort (lbs / kg)20,808 / 9438.36
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.16
Heating Ability
Firebox Area (sq ft / m2)133 / 12.36
Grate Area (sq ft / m2)26.33 / 2.45
Evaporative Heating Surface (sq ft / m2)1316 / 122.26
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1316 / 122.26
Evaporative Heating Surface/Cylinder Volume186.18
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4476
Same as above plus superheater percentage4476
Same as above but substitute firebox area for grate area22,610
Power L14288
Power MT264.06

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