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
Locobase ID12657
RailroadRochester & Pittsburgh Coal & Iron
Number in Class1
Road Numbers200
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase
Engine Wheelbase28.25'
Ratio of driving wheelbase to overall engine wheebase
Overall Wheelbase (engine & tender)28.25'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers
Engine Weight72600 lbs
Tender Light Weight
Total Engine and Tender Weight72600 lbs
Tender Water Capacity500 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)0
Geometry Relating to Tractive Effort
Driver Diameter54"
Boiler Pressure160 psi
Cylinders (dia x stroke)9" x 16"
Tractive Effort3264 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort)
Heating Ability
Firebox Area51.60 sq. ft
Grate Area 9.61 sq. ft
Evaporative Heating Surface360 sq. ft
Superheating Surface
Combined Heating Surface360 sq. ft
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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