Rochester & Pittsburgh Coal & Iron 4-2-2 "Bicycle" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 200 (Locobase 12657)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 25. p. 214. Works number was 21775 in March 1903.

Like most inspection engines, this locomotive had a car body mounted on a conventioal boiler and firebox. Obviously, it had to be well-insulated. The specs noted that the passenger compartment would have six windows while the cab had five.

Specifications by Steve Llanso of Sweat House Media
Class200
Locobase ID12,657
RailroadRochester & Pittsburgh Coal & Iron
CountryUSA
Whyte4-2-2T
Number in Class1
Road Numbers200
GaugeStd
Number Built1
BuilderBurnham, Williams & Co
Year1903
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)
Engine Wheelbase (ft)28.25
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender) (ft)28.25
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)
Engine Weight (lbs)72,600
Tender Loaded Weight (lbs)
Total Engine and Tender Weight (lbs)72,600
Tender Water Capacity (gals)500
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)
Geometry Relating to Tractive Effort
Driver Diameter (in)54
Boiler Pressure (psi)160
High Pressure Cylinders (dia x stroke) (in)9" x 16"
Tractive Effort (lbs)3264
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Firebox Area (sq ft)51.60
Grate Area (sq ft) 9.61
Evaporative Heating Surface (sq ft)360
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)360
Evaporative Heating Surface/Cylinder Volume305.58
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation1538
Same as above plus superheater percentage1538
Same as above but substitute firebox area for grate area8256
Power L17554
Power MT


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