Stonington 2-2-0 "Planet" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class Stonington (Locobase 801)

Railway & Locomotive Historical Society Bulletin #13 (1927) has report by railroad of this engine's performance.

A 25 March 1837 test had the Stonington pull a 49 car train with a trailing load of 262 tons along the 26 miles between Boston and Lowell.

See also Boston & Lowell's Patrick.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID801
Number in Class1
Road Numbers
Number Built1
BuilderStonington Railroad
Valve Gear
Locomotive Length and Weight
Driver Wheelbase (ft / m)
Engine Wheelbase (ft / m)
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)13,350 / 6055
Engine Weight (lbs / kg)20,665 / 9373
Tender Loaded Weight (lbs / kg)14,400
Total Engine and Tender Weight (lbs / kg)35,065
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)22 / 11
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)54 / 1372
Boiler Pressure (psi / kPa)70 / 4.80
High Pressure Cylinders (dia x stroke) (in / mm)12" x 18" / 305x457
Tractive Effort (lbs / kg)2856 / 1295.46
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.67
Heating Ability
Firebox Area (sq ft / m2)
Grate Area (sq ft / m2)
Evaporative Heating Surface (sq ft / m2)
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)
Evaporative Heating Surface/Cylinder Volume
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 area
Power L1
Power MT

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Wes Barris