Boston & Albany 2-10-2 "Santafe" Locomotives of the USA

The United States Railway Administration allocated ten "Santa Fe-Light" type locomotives to the Boston & Albany Railroad and they arrived from the American Locomotive Company in 1919. These 2-10-2s had 57" diameter drivers, 27" x 32" cylinders, a 200 psi boiler pressure, they exerted 69,575 pounds of tractive effort and each weighed 352,000 pounds. The B&A designated them as Class Z-1 and they were assigned road numbers 1100-1109.

The B&A began to increase the speed of its freight service in the early 1920s and gradually took the 2-10-2s out of service because they were too slow. In 1926, they were transferred to the CCC&StL and later they went to the NYC&HR. In 1928 all ten of the Class Z-1 locomotives were sold to the Canadian National Railway.

There are no surviving B&A "Santa Fe" 2-10-2 type locomotives.

Roster by Richard Duley

ClassQty.Road NumbersYear BuiltBuilderNotes
Z-1101100-11091919ALCOUSRA allocated .Santa Fe-Light. locomotives. Sold to the Canadian National Railway in 1928 and became CNR numbers 4200-4209

Class Details by Steve Llanso of Sweat House Media

Class Z-1 / T3 (Locobase 8109)

Data from the 1953 Canadian National locomotive diagram supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 60065-60074 in 1919.

The origin of the data for this class reflect its bifurcated career. They began as USRA Light Santa Fes assigned to the drag freights on the B & A. Very soon after their introduction, however, the B & A made a particular effort to increase freight-train speeds and these engines proved ill-suited to such work. They went to the Big Four in 1926 and the New York Central itself in 1927.

In 1928, the Canadian National bought the class, renumbered them 4200-4209, and placed them in their own class T3 to serve the Grand Trunk. There they found a home and served their new owners until the end of steam. The first of the class retired in 1955, the last in 1961.

Specifications by Steve Llanso of Sweat House Media
ClassZ-1 / T3
Locobase ID8109
RailroadBoston & Albany (NYC)
Number in Class10
Road Numbers1100-1109 / 4200-4209
Number Built10
Valve GearSouthern
Locomotive Length and Weight
Driver Wheelbase21'
Engine Wheelbase40.33'
Ratio of driving wheelbase to overall engine wheebase 0.52
Overall Wheelbase (engine & tender)75.96'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers276000 lbs
Engine Weight352000 lbs
Tender Light Weight188300 lbs
Total Engine and Tender Weight540300 lbs
Tender Water Capacity11000 gals
Tender Fuel Capacity (oil/coal)17.6 tons
Minimum weight of rail (calculated)92 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter57"
Boiler Pressure200 psi
Cylinders (dia x stroke)27" x 32"
Tractive Effort69575 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.97
Heating Ability
Firebox Area373 sq. ft
Grate Area76.30 sq. ft
Evaporative Heating Surface4666 sq. ft
Superheating Surface1085 sq. ft
Combined Heating Surface5751 sq. ft
Evaporative Heating Surface/Cylinder Volume220.03
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation15260
Same as above plus superheater percentage18159
Same as above but substitute firebox area for grate area88774
Power L114601
Power MT583.15



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