0-4-0 "Switcher" Steam Locomotives in the USA

Bradley Contracting Company


Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 15030)

Data from Roy V Wright (Ed.) 1912 Locomotive Cyclopedia of American Practice, Sixth Edition (New York: Simmons-Boardman Publishing Company, 1912), p. 154. See also "New York Subway Work", Contract News Section, Engineering-Contracting, Volume XXXIV [34], No 17 (26 October 1910), p. 35, 39. Works numbers were 1178-1179 in May 1912.

A Manhattan-based contractor purchased this pair of small saddle tanks to support a major subway construction project.

[Locobase engaged with DuckDuckGo's Chat GPT-6 for the very first time to ask what specific lines BC worked on. Here's the 2 October 2026 reply:

"Bradley Contracting Company helped build the IRT Lexington Avenue Subway-today's 4, 5, and 6 lines. Its 1911 contracts covered several sections; one section, between 26th and 40th Streets, was later omitted and its work suspended in 1912. The records I found point to the Lexington Avenue line, not multiple subway lines." In Locobase's first use of an LLM, he found it helpful in setting a context for the owner of these two locomotives. Hathitrust supplied the Engineering-Contracting stories.]

Bradley Contracting helped build many of the subway lines in New York City. In the Engineering-Contracting item cited above, the report focused on the bids received for an 18-mile (29 km) stretch of subway, much of it under the center of the business district. E-C commented that Bradley Contracting was the only company to bid on all of the sections in the RFP. Page 39's article on project details noted that BC Company's bid on the 17 sections of the Broadway-Lexington line came to $94 million. This was $34 million more than the City's entire budget for subway work for that year.

Principal Dimensions by Steve Llanso of Middle Run Media
Class1
Locobase ID15030
RailroadBradley Contracting Company
CountryUSA
Whyte0-4-0ST
Number in Class1
Road Numbers1-2
GaugeStd
Number Built1
BuilderDavenport
Year1912
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)6 / 1.83
Engine Wheelbase (ft / m)6 / 1.83
Ratio of driving wheelbase to overall engine wheelbase1
Overall Wheelbase (engine & tender) (ft / m)6 / 1.83
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)62,500 / 28,350
Engine Weight (lbs / kg)62,500 / 28,350
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)52 / 26
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)36 / 914
Boiler Pressure (psi / kPa)170 / 1170
High Pressure Cylinders (dia x stroke) (in / mm)13" x 18" / 330x457
Tractive Effort (lbs / kg)12,210 / 5538.37
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.12
Heating Ability
Tubes (number - dia) (in / mm)
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)
Firebox Area (sq ft / m2)53 / 4.92
Grate Area (sq ft / m2)10.15 / 0.94
Evaporative Heating Surface (sq ft / m2)537 / 49.89
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)537 / 49.89
Evaporative Heating Surface/Cylinder Volume193.86
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1726
Same as above plus superheater percentage1726
Same as above but substitute firebox area for grate area9010
Power L12953
Power MT208.33

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