The B&HS had five steam locomotives when it began operating in 1925. Three of those locomotives were bought new from the Baldwin Locomotive Works and the other two purchased used from other nearby railroads. Two of the new locomotives were "Mikado" type. One was built in 1924 and assigned road number 301 and the other was built in 1925 and assigned road number 300. Both of these locomotives had 52" diameter drivers and 19" x 26" cylinders, a 200 psi boiler pressure, they exerted 30,685 pounds of tractive effort and each weighed 160,700 pounds.
There is one surviving B&HS 2-8-2 "Mikado" type locomotive. It is number 300, which is on display behind the Southern Railway Depot in Hattiesburg, MS.
|Qty.||Road Numbers||Year Built||Builder||Notes|
The TLC was based in Hattiesburg, Miss and wanted to expand its logging to a nearby Denco, Miss site. It offered to buy the 27-mile (43.5 km) Gulf, Mobile & Northern branch line in 1923 from Hattiesburg to Beaumont to link to the Gulf, Mobile & Northern junction. According to Mississippi Rails, the Mississippi Central tried to block the line to preserve its leased monopoly and appealed to the Interstate Commerce Commission. The ICC finally approved the sale on 1 January 1925.
Victory in this protracted legal fight led immediately to an order for the a light-rail Mikado to be numbered 100. Before delivery,however, the engine was renumbered 300.
The 300 operated on the 60 lb/yard (30 kg/metre) main-line rail, met gentle 1% grades (although the crown sheet had to be arranged to handle 3% grades), and arced around curves of 22 degrees (radii of 262 feet/79.9 metres). Their superheated boilers supplied steam hot enough to require 10" (254 mm) piston valves to distribute it to the cylinders.
The 300 later was sold to Fred Kepner of the National Railway Historical Society, which placed it on display in Hattiesburg. A 2013 photo showed a rusting locomotive with greenery growing out of the domes.
|Specifications by Steve Llanso of Sweat House Media|
|Railroad||Bonhomie & Hattiesburg Southern|
|Number in Class||1|
|Locomotive Length and Weight|
|Driver Wheelbase (ft / m)||14 / 4.27|
|Engine Wheelbase (ft / m)||30.08 / 9.17|
|Ratio of driving wheelbase to overall engine wheebase||0.47|
|Overall Wheelbase (engine & tender) (ft / m)||57.50 / 17.53|
|Axle Loading (Maximum Weight per Axle) (lbs / kg)|
|Weight on Drivers (lbs / kg)||124,000 / 56,246|
|Engine Weight (lbs / kg)||156,000 / 70,760|
|Tender Loaded Weight (lbs / kg)||140,600 / 63,775|
|Total Engine and Tender Weight (lbs / kg)||296,600 / 134,535|
|Tender Water Capacity (gals / ML)||7000 / 26.52|
|Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)||12 / 10.90|
|Minimum weight of rail (calculated) (lb/yd)||52|
|Geometry Relating to Tractive Effort|
|Driver Diameter (in / mm)||52 / 1321|
|Boiler Pressure (psi / kPa)||200 / 13.80|
|High Pressure Cylinders (dia x stroke) (in / mm)||19" x 26" / 483x660|
|Tractive Effort (lbs / kg)||30,685 / 13918.50|
|Factor of Adhesion (Weight on Drivers/Tractive Effort)||4.04|
|Firebox Area (sq ft / m2)||162 / 15.05|
|Grate Area (sq ft / m2)||30.75 / 2.86|
|Evaporative Heating Surface (sq ft / m2)||1770 / 164.44|
|Superheating Surface (sq ft / m2)||394 / 36.60|
|Combined Heating Surface (sq ft / m2)||2164 / 201.04|
|Evaporative Heating Surface/Cylinder Volume||207.45|
|Computations Relating to Power Output (More Information)|
|Robert LeMassena's Power Computation||6150|
|Same as above plus superheater percentage||7257|
|Same as above but substitute firebox area for grate area||38,232|