Manhattan Railway Company 0-4-2 Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class J2 (Locobase 6663)

Data from the 1902 Manhattan Railway Company locomotive diagram book and the JF Webber list of New York Locomotive Works engines supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.

See Locobase 5423 for a more general discussion. The boiler pressure is an estimate as the diagrams do not give the figure. These may be the class that was rebuilt by Rome from earlier Baldwin engines. The first was delivered in May, the last in August.

After the Manhattan was electrified, this class was dispersed all over the world.

Principal Dimensions by Steve Llanso of Middle Run Media

Locobase ID6663
RailroadManhattan Railway Company
Number in Class25
Road Numbers
Number Built25
BuilderNew York
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)5 / 1.52
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)35,050 / 15,898
Engine Weight (lbs / kg)43,450 / 19,709
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)43,450
Tender Water Capacity (gals / ML)635 / 2.41
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT) 0.50 / 1
Minimum weight of rail (calculated) (lb/yd / kg/m)29 / 14.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)42 / 1067
Boiler Pressure (psi / kPa)150 / 10.30
High Pressure Cylinders (dia x stroke) (in / mm)11" x 16" / 279x406
Tractive Effort (lbs / kg)5877 / 2665.77
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.96
Heating Ability
Tubes (number - dia) (in / mm)172 - 1.5" / 38
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m) 6.54 / 1.99
Firebox Area (sq ft / m2)49.20 / 4.57
Grate Area (sq ft / m2)11.15 / 1.04
Evaporative Heating Surface (sq ft / m2)453 / 42.10
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)453 / 42.10
Evaporative Heating Surface/Cylinder Volume257.39
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1673
Same as above plus superheater percentage1673
Same as above but substitute firebox area for grate area7380
Power L14170
Power MT524.58

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Wes Barris