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

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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
Class30
Locobase ID13,236
RailroadHuntington & Broad Top Mountain
CountryUSA
Whyte4-4-0
Number in Class1
Road Numbers30
GaugeStd
Number Built1
BuilderBurnham, Williams & Co
Year1907
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)8 / 2.44
Engine Wheelbase (ft / m)22.92 / 6.99
Ratio of driving wheelbase to overall engine wheebase 0.35
Overall Wheelbase (engine & tender) (ft / m)
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)85,000 / 38,555
Engine Weight (lbs / kg)128,000 / 58,060
Tender Loaded Weight (lbs / kg)90,000 / 40,823
Total Engine and Tender Weight (lbs / kg)218,000 / 98,883
Tender Water Capacity (gals / ML)4500 / 17.05
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)71 / 35.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)66 / 1676
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)19" x 24" / 483x610
Tractive Effort (lbs / kg)20,085 / 9110.41
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.23
Heating Ability
Firebox Area (sq ft / m2)169.40 / 15.74
Grate Area (sq ft / m2)31.50 / 2.93
Evaporative Heating Surface (sq ft / m2)2166 / 201.23
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2166 / 201.23
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 area30,492
Power L17575
Power MT392.94