Philadelphia & Reading 0-6-0 "Switcher" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class Philadelphia (Locobase 2547)

Rebuilt from the Richmond, which blew up 19 days after it entered service on the Reading in September 1844. The incident, blamed by one authority on a lightning strike, was later more plausibly attributed to defective feed-water pumps leading to low water over the crown sheet. The Philadelphia, which drove on the rear axle rather than on the middle one as had Richmond, was turned out by noted designer James Milholland. In addition to the 2" tubes shown, the boiler also held four 1 3/4" tubes.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID2547
RailroadPhiladelphia & Reading
Number in Class1
Road Numbers
Number Built1
Valve GearV-hook
Locomotive Length and Weight
Driver Wheelbase (ft / m) 7.70 / 2.35
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)
Engine Weight (lbs / kg)
Tender Loaded Weight (lbs / kg)
Total Engine and Tender Weight (lbs / kg)
Tender Water Capacity (gals / ML)
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)46 / 1168
Boiler Pressure (psi / kPa)120 / 8.30
High Pressure Cylinders (dia x stroke) (in / mm)14.5" x 20" / 368x508
Tractive Effort (lbs / kg)9324 / 4229.30
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Firebox Area (sq ft / m2)48 / 4.46
Grate Area (sq ft / m2)11.40 / 1.06
Evaporative Heating Surface (sq ft / m2)848 / 78.81
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)848 / 78.81
Evaporative Heating Surface/Cylinder Volume221.85
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1368
Same as above plus superheater percentage1368
Same as above but substitute firebox area for grate area5760
Power L12619
Power MT

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Wes Barris