Huntington & Broad Top Mountain 4-4-0 "American" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 30 (Locobase 13236)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 31, p. 122. Works number was 32305 in November 1907.

An independent western Pennsylvania road, the H & BT did have a passenger schedule and needed a passenger engine. This was it. Like most other H & BT locomotives, it enjoyed a long operating life, only going to the scrapper in October 1949.

Specifications by Steve Llanso of Sweat House Media
Locobase ID13236
RailroadHuntington & Broad Top Mountain
Number in Class1
Road Numbers30
Number Built1
BuilderBurnham, Williams & Co
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase8'
Engine Wheelbase22.92'
Ratio of driving wheelbase to overall engine wheebase 0.35
Overall Wheelbase (engine & tender)
Axle Loading (Maximum Weight per Axle)
Weight on Drivers85000 lbs
Engine Weight128000 lbs
Tender Light Weight90000 lbs
Total Engine and Tender Weight218000 lbs
Tender Water Capacity4500 gals
Tender Fuel Capacity (oil/coal)
Minimum weight of rail (calculated)71 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter66"
Boiler Pressure180 psi
Cylinders (dia x stroke)19" x 24"
Tractive Effort20085 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.23
Heating Ability
Firebox Area169.40 sq. ft
Grate Area31.50 sq. ft
Evaporative Heating Surface2166 sq. ft
Superheating Surface
Combined Heating Surface2166 sq. ft
Evaporative Heating Surface/Cylinder Volume275.02
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5670
Same as above plus superheater percentage5670
Same as above but substitute firebox area for grate area30492
Power L17575
Power MT392.94

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