Mohawk & Hudson / New York Central & Hudson River 0-4-0 "Switcher" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 3 (Locobase 15623)

Data from NYC 9 - 1905 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 1482 (road #9) in December 1881, 1485 in January 1882 (road #10), 2480-2481 (road #4, 12, later 4 and 8) in February 1888, 2594 (road #6) in February 1890, 3265-3266 (road #5 and 7) in October, 3267 (road #3) in November.

Described as dummy engines, this set of motors is hard to figure out and the 1905 book does not offer a diagram. The weight seems high and the firebox puny. They were probably car shunters at Grand Central Station.

Class DeWitt Clinton (Locobase 4787)

The first locomotive for what would later become the New York Central, this little teakettle had inclined cylinders at the rear driving down and forward to the lead set of drivers. A slender boiler rode high in a frame set above the driving axles and a tall steam dome sat on the boiler between the drivers.

The Clinton was choosy about the fuel it burned (anthracite was too hard, coke too hot). According to Henry B. Comstock (1971), the engine choked on the anthracite because it had an tall, large-diameter stack that drew poorly. In a celebrated example of unintended consequences, the substitution of pitch-pine meant showers of sparks that left holes in hats and parasols as well as coats and dresses. Also, the utter lack of any buffering of the links between cars led to neck-snapping starts and tumbling stops. The DeWitt Clinton remained in service only a year, but was later reproduced in replica in the 1890s.

See also Kinert, 1962.

Principal Dimensions by Steve Llanso of Sweat House Media
Class3DeWitt Clinton
Locobase ID15623 4787
RailroadNew York Central & Hudson River (NYC)Mohawk & Hudson (NYC)
Number in Class81
Road Numbers3-10
Number Built81
BuilderSchenectadyDavid Matthew
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)6 / 1.83
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheelbase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)74,000 / 33,5667000 / 3175
Engine Weight (lbs / kg)74,000 / 33,5667000 / 3175
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)580 / 2.20
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.70 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)6 / 3
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)46 / 116854 / 1372
Boiler Pressure (psi / kPa)135 / 9.3080 / 5.50
High Pressure Cylinders (dia x stroke) (in / mm)15" x 22" / 381x5595.5" x 16" / 140x406
Tractive Effort (lbs / kg)12,348 / 5600.97609 / 276.24
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.9911.49
Heating Ability
Tubes (number - dia) (in / mm)153 - 2" / 5130 - 2.5" / 64
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.83 / 3.616 / 1.83
Firebox Area (sq ft / m2)28 / 2.60
Grate Area (sq ft / m2)
Evaporative Heating Surface (sq ft / m2)976 / 90.67184 / 17.10
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)976 / 90.67184 / 17.10
Evaporative Heating Surface/Cylinder Volume216.89418.18
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation
Same as above plus superheater percentage
Same as above but substitute firebox area for grate area3780
Power L12567
Power MT

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Wes Barris