Old Colony 4-4-0 "American" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 256 / C-2 (Locobase 14734)

Data from James Dredge, A Record of the Transportation Exhibits at the World's Columbian Exposition of 1893 (New York: John Wiley & Sons, 1894), pp. 241+.

It's not clear why Old Colony Railroad thought it necessary to send this engine to the 1893 Columbian Exposition in Chicago. It wasn't unusual in its size or capability--hundreds, even thousands like it were in service across North America. So we can view it as representative of one of the most widely distributed designs in the steam locomotive era--a North American Eight-wheeler.

The engine was shown just as the New York, New Haven and Hartford Railroad took out a 99-year lease on the entire system of 617 route miles (993 km) throughout eastern Massachusetts. As a result, the New Haven completed its shore route between New York City and Boston.

At that point, the 256 and several of her sisters were lumped together with a variety of other acquisitions as class C-2. Of that variegated class, approximately twenty had been built in the Old Colony's shops.

Specifications by Steve Llanso of Sweat House Media
Class256 / C-2
Locobase ID14,734
RailroadOld Colony (New Haven)
Number in Class1
Road Numbers256
Number Built1
BuilderOld Colony
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)9
Engine Wheelbase (ft)23.50
Ratio of driving wheelbase to overall engine wheebase 0.38
Overall Wheelbase (engine & tender) (ft)46.21
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)64,000
Engine Weight (lbs)99,000
Tender Loaded Weight (lbs)67,000
Total Engine and Tender Weight (lbs)166,000
Tender Water Capacity (gals)
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)53
Geometry Relating to Tractive Effort
Driver Diameter (in)69
Boiler Pressure (psi)160
High Pressure Cylinders (dia x stroke) (in)18" x 24"
Tractive Effort (lbs)15,327
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.18
Heating Ability
Firebox Area (sq ft)138
Grate Area (sq ft)19.25
Evaporative Heating Surface (sq ft)1373
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1373
Evaporative Heating Surface/Cylinder Volume194.24
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3080
Same as above plus superheater percentage3080
Same as above but substitute firebox area for grate area22,080
Power L15370
Power MT369.96

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