Boston & Albany 2-10-2 "Santa Fe" Locomotives in 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.


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 (USRA)/T-3 (Locobase 8109)

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

The origin of the data for this class reflect its bifurcated career. They began as USRA Light Santa Fes (Locobase 231) 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.

Principal Dimensions by Steve Llanso of Sweat House Media

ClassZ-1 (USRA)/T-3
Locobase ID8109
RailroadBoston & Albany (NYC)
Number in Class10
Road Numbers1100-1109/4200-4209
Number Built10
Valve GearSouthern
Locomotive Length and Weight
Driver Wheelbase (ft / m)21 / 6.40
Engine Wheelbase (ft / m)40.33 / 12.29
Ratio of driving wheelbase to overall engine wheelbase 0.52
Overall Wheelbase (engine & tender) (ft / m)75.96 / 23.15
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)276,000 / 125,192
Engine Weight (lbs / kg)352,000 / 159,665
Tender Loaded Weight (lbs / kg)188,300 / 85,412
Total Engine and Tender Weight (lbs / kg)540,300 / 245,077
Tender Water Capacity (gals / ML)11,000 / 41.67
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)17.60 / 16
Minimum weight of rail (calculated) (lb/yd / kg/m)92 / 46
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)57 / 1448
Boiler Pressure (psi / kPa)200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)27" x 32" / 686x813
Tractive Effort (lbs / kg)69,575 / 31558.73
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.97
Heating Ability
Tubes (number - dia) (in / mm)247 - 2.25" / 57
Flues (number - dia) (in / mm)45 - 5.5" / 140
Flue/Tube length (ft / m)20.50 / 6.25
Firebox Area (sq ft / m2)373 / 34.65
Grate Area (sq ft / m2)76.30 / 7.09
Evaporative Heating Surface (sq ft / m2)4666 / 433.48
Superheating Surface (sq ft / m2)1085 / 100.80
Combined Heating Surface (sq ft / m2)5751 / 534.28
Evaporative Heating Surface/Cylinder Volume219.99
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation15,260
Same as above plus superheater percentage18,159
Same as above but substitute firebox area for grate area88,774
Power L114,598
Power MT583.03

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Wes Barris