Louisiana Railway & Navigation / Shreveport & Red River Valley 2-6-0 "Mogul" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 55 (Locobase 11517)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 24, p. 34 and Volume 26, p. 203. Works numbers were 19390, 19405-19406 in August 1901; 19911 in December; 23503, 23512, 23558-23559 in January. 1904

Ordered by the Shreveport & Red River Valley, the last pair was actually delivered to the LR & N. The S & RRV laid a 44-mile line between Shreveport and Coushatta, La in 1898 and extended it to Alexandria and Mansura (a total of 152 miles), but it was the LR & N that completed the line to New Orleans.

56 and 61 were sold in 1924 to locomotive rebuilder/reseller Southern Iron & Equipment. 61 went to the Mississippi Export as their #203. 55 and 60 went to the Louisiana & Arkansas as their #55 and 60 in 1929, and 62-63 were scrapped in September 1929. The L & A sold 60 to Big Four Gravel in 1930. 64 and 65 show in the order book, but Locobase cannot identify them further.


Class 68 (Locobase 12851)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 28, p. 153. Works numbers were 27002-27004 in December 1905; 29082-29083, 29118-29120 in September 1906.

The LR&N was organized on 9 May 1903 (and incorporated 22 June) by the builder of the Shreveport & Red River Valley to consolidate that line with an extension down to New Orleans. When the latter was completed in December 1906, the new LR&N stretched 303 miles all the way downstate from Shreveport to New Orleans.

This class used the same boiler and firebox as the Mogul engines that first were supplied to the Shreveport & Red River Valley (Locobase 11517). Taller drivers took more adhesion weight.

68 was sold by the LR & N in March 1924 to locomotive rebuilder/reseller Southern Iron & Equipment. 69-74 were scrapped after 25 years in service to LR & N and its successor, the Louisiana & Arkansas, in September 1930 and 75 in October 1934.


Class 81 (Locobase 12853)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 40, p. 126. Works numbers were 33503-33504 in June 1909, 33525 in July.

LR & N was later merged with the Louisiana & Arkansas in 1929. Two years later, the L & A sold the 83 to Colfax Gravel Company. 81 was scrapped in March 1934. The L & A retained the 82 until June 1945 when it went to work for Gulf Asphalt.

Specifications by Steve Llanso of Sweat House Media
Class556881
Locobase ID11,517 12,851 12,853
RailroadShreveport & Red River Valley (LR&N)Louisiana Railway & Navigation (LR&N)Louisiana Railway & Navigation (LR&N)
CountryUSAUSAUSA
Whyte2-6-02-6-02-6-0
Number in Class1083
Road Numbers55-58, 60-6568-7581-83
GaugeStdStdStd
Number Built1083
BuilderBurnham, Williams & CoBurnham, Williams & CoBaldwin
Year190119051910
Valve GearStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)151515.60
Engine Wheelbase (ft)22.6722.6723.50
Ratio of driving wheelbase to overall engine wheebase 0.66 0.66 0.66
Overall Wheelbase (engine & tender) (ft)45.71
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)75,00086,000102,000
Engine Weight (lbs)86,000104,000120,000
Tender Loaded Weight (lbs)70,00080,000
Total Engine and Tender Weight (lbs)156,000184,000
Tender Water Capacity (gals)350045005500
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)424857
Geometry Relating to Tractive Effort
Driver Diameter (in)545555
Boiler Pressure (psi)180180200
High Pressure Cylinders (dia x stroke) (in)17" x 24"17" x 24"18" x 24"
Tractive Effort (lbs)19,65219,29524,035
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.82 4.46 4.24
Heating Ability
Firebox Area (sq ft)125.10125138.20
Grate Area (sq ft)171717.20
Evaporative Heating Surface (sq ft)125612571607
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)125612571607
Evaporative Heating Surface/Cylinder Volume199.21199.37227.34
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation306030603440
Same as above plus superheater percentage306030603440
Same as above but substitute firebox area for grate area22,51822,50027,640
Power L1483449255960
Power MT426.29378.76386.46


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