Bonhomie & Hattiesburg Southern 4-4-0 "American" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 200 (Locobase 15317)

Data from the T&NO 3 -1932 Locomotive Diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also DeGolyer, Vol 73, p. 364+. Works number was 58268 in May 1925.

When Tatum Lumber Company finally gained the ICC's approval for its purchase of the branch line that would be known as the B&HS, it immediately ordered some new locomotives. Passenger power on the the 27-mile line was this superheated Eight-wheeler costing $19,285, which admitted steam to its cylinders through 8" (203 mm) piston valves. The design appears to have been derived from a quintet of San Antonio & Aransas Pass locomotives produced in November 1924 (see Locobase 8653).

Its classic profile served the B&HS until 1953, when the TLC sold the branch to fellow Tatum subsidiary Fernwood, Columbia & Gulf and sent the 200 to the ferro-knacker.

Principal Dimensions by Steve Llanso of Middle Run Media
Class200
Locobase ID15317
RailroadBonhomie & Hattiesburg Southern
CountryUSA
Whyte4-4-0
Number in Class1
Road Numbers200
GaugeStd
Number Built1
BuilderBaldwin
Year1925
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)7 / 2.13
Engine Wheelbase (ft / m)21.33 / 6.50
Ratio of driving wheelbase to overall engine wheelbase 0.33
Overall Wheelbase (engine & tender) (ft / m)48.58 / 14.81
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)66,000 / 29,937
Engine Weight (lbs / kg)103,000 / 46,720
Tender Loaded Weight (lbs / kg)80,000 / 36,287
Total Engine and Tender Weight (lbs / kg)183,000 / 83,007
Tender Water Capacity (gals / ML)4000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)7 / 6
Minimum weight of rail (calculated) (lb/yd / kg/m)55 / 27.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)62 / 1575
Boiler Pressure (psi / kPa)175 / 1210
High Pressure Cylinders (dia x stroke) (in / mm)17" x 24" / 432x610
Tractive Effort (lbs / kg)16,641 / 7548.24
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.97
Heating Ability
Tubes (number - dia) (in / mm)98 - 2" / 51
Flues (number - dia) (in / mm)14 - 5.375" / 137
Flue/Tube length (ft / m)12 / 3.66
Firebox Area (sq ft / m2)90 / 8.36
Grate Area (sq ft / m2)21 / 1.95
Evaporative Heating Surface (sq ft / m2)937 / 87.05
Superheating Surface (sq ft / m2)186 / 17.28
Combined Heating Surface (sq ft / m2)1123 / 104.33
Evaporative Heating Surface/Cylinder Volume148.49
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation3675
Same as above plus superheater percentage4300
Same as above but substitute firebox area for grate area18,428
Power L18772
Power MT586.03

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