Conway Company 2-4-2 "Columbian" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 12991)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 29, p. 138,. Works number was 30449 in March 1907.

Locobase isn't sure if the Conway Company owned the Berlin Mills Railway, but the use of a double-ended saddle tank was typical of that line. Conway later sold out to Brown Company.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12991
RailroadConway Company
Number in Class1
Road Numbers1
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase 7.50'
Engine Wheelbase24.17'
Ratio of driving wheelbase to overall engine wheebase 0.31
Overall Wheelbase (engine & tender)24.17'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers70000 lbs
Engine Weight105000 lbs
Tender Light Weight
Total Engine and Tender Weight105000 lbs
Tender Water Capacity1500 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)58 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter48"
Boiler Pressure160 psi
Cylinders (dia x stroke)15" x 24"
Tractive Effort15300 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.58
Heating Ability
Firebox Area90.80 sq. ft
Grate Area15 sq. ft
Evaporative Heating Surface996 sq. ft
Superheating Surface
Combined Heating Surface996 sq. ft
Evaporative Heating Surface/Cylinder Volume202.90
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2400
Same as above plus superheater percentage2400
Same as above but substitute firebox area for grate area14528
Power L13781
Power MT238.16

If you have any railroad data such as diagram books, rail station plans or anything else that you would be willing to share, please contact us.