Shreveport, Houston & Gulf 2-6-0 "Mogul" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 12654)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 32, p. 248. (Thanks to Chris Hohl for his 24 April 2015 email correcting engine weights and adding coal capacity.) Works numbers were 29588 in November 1906, 29900 in January 1907, and 32849 in July 1908. See also the Tap Line archive at http://www.ttarchive.com/Library/Articles/TapLineCase_Louisian&Pacific.html

A small Mogul of no particular distinction bought orginally by the Lufkin Land & Lumber Company, #1's long survival and 21st Century status as preserved, if no longer operable, locomotive ensure its use as a model of a certain kind of railroading.

The Eureka Springs & Northern Arkansas website offers an interesting discussion of the varieties of wood used in the firebox over its century-long career:

On the SH&G rails, the engine would "...burn yellow pine slab wood. Later when part of The Scott & Bearskin Lake Railroad in Scott, Ark. it burned sycamore and other local hard woods. Here in Eureka Springs it burns white and red oak, and hickory." All of these fuels demanded a classic cabbage-shaped spark arrester blooming at the top of the stack.

They also came in at different weights per cord. In sum:

Wood

Pine (Jack) 2,488

Sycamore 2,808

White Oak 4,200

Red Oak 3,528

Hickory 3,952

The ES&NA site also notes that when operating, the little 2-6-0 would burn "... up to 1-1/2 to 2 cords of Ozark hardwood in a full day's operation." It also retained its spark-arresting cabbage stack.

All of the engines operated on the eastern Texas lumber interests' Shreveport, Houston & Gulf once that railroad began service in 1906, connecting Prestridge and Houston. The line featured two grades of a mile each at 1%. The sharpest curve described an 8-degree arc.

They remained in the area for 30 years, running under the heralds of the Carter-Kelly Lumber Company. When the CKL's yard burned down in 1935 and the lumber supply was exhausted in 1936, all three engines were employed by WT Carter & Brothers Lumber Company.

1 & 2 wound up being owned by the Grigsby Foundation, which ran the 1 on the Scott & Bearskin Lake and later sold the engine to the ES & NA. 2 was leased to First Reader Company Limited in 1978 to operate on the Reader (Possum Trot Line). 3 was sold in 1970 to the Texas Forestry Association to put on display at Lufkin.

Specifications by Steve Llanso of Sweat House Media
Class1
Locobase ID12,654
RailroadShreveport, Houston & Gulf
CountryUSA
Whyte2-6-0
Number in Class3
Road Numbers1-3
GaugeStd
Number Built3
BuilderBurnham, Williams & Co
Year1906
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)12 / 3.66
Engine Wheelbase (ft / m)18.83 / 5.74
Ratio of driving wheelbase to overall engine wheebase 0.64
Overall Wheelbase (engine & tender) (ft / m)41.17 / 12.55
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)67,000 / 30,391
Engine Weight (lbs / kg)80,000 / 36,287
Tender Loaded Weight (lbs / kg)50,000 / 22,680
Total Engine and Tender Weight (lbs / kg)130,000 / 58,967
Tender Water Capacity (gals / ML)2500 / 9.47
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT) 4.50 / 4.10
Minimum weight of rail (calculated) (lb/yd / kg/m)37 / 18.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)48 / 1219
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)15" x 22" / 381x559
Tractive Effort (lbs / kg)15,778 / 7156.79
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.25
Heating Ability
Firebox Area (sq ft / m2)85.50 / 7.94
Grate Area (sq ft / m2)11.68 / 1.09
Evaporative Heating Surface (sq ft / m2)801 / 74.41
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)801 / 74.41
Evaporative Heating Surface/Cylinder Volume178.01
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2102
Same as above plus superheater percentage2102
Same as above but substitute firebox area for grate area15,390
Power L13931
Power MT388.05