Louisiana Railway & Navigation 4-6-0 "Ten-Wheeler" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 92 (Locobase 12855)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 48, p. 251. Works numbers were 40311-40313 in August 1913; 41917-41919 in February 1915.

Although the boiler barrel and tube and flue layout were the same in this sextet of Ten-wheelers as it was in the earlier Consolidations (Locobase 12854), the design addressed the need for mixed-traffic locomotives on a relatively light right-of-way.

All of them served the LR&N and its successor, the Louisiana & Arkansas until after World War II. Two had their cylinders relined to 19" (483 mm) diameters and received 63" (1,600 mm) drivers, 397 in January 1934 and 396 in December 1938. 393 and 395 were sold in December 1947 to M Beychok, scrap dealer. 397 ws scrapped in January 1948 and 394 followed in September 1950. 392and 396 departed The Better Way in the same year, but for Mexico's SCOP (Sociedad CO de Petroleos).


Class 95 (Locobase 12856)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 43, p. 137. Works numbers were 41917-41919 in February 1915.

Continuing a line of small, superheated engines suitable for a primarily freight-centered business, this trio of Ten-wheelers repeated the dimensions of the set purchased in 1913 (Locobase 12855). Driver diameter was reduced by 2"(51 mm) and the boiler was set at a higher pressure. (The specs show the same tractive effort as the 92s, however.)

All of them served the LR&N and its successor, the Louisiana & Arkansas until after World War II. 95 was sold in March 1947 to M Beychok, scrap dealer.

96 was rebuilt in 1938 with 19" x 26" cylinders powering 69" (1,753 mm) drivers (according to Gene Connelly's listing); 97's similar rebuild used 63" drivers. 96 joined the 95 in its September 1950 departure for Mexico's SCOP (Sociedad CO de Petroleos). 97 was scrapped in January 1948.

Principal Dimensions by Steve Llanso of Sweat House Media
Class9295
Locobase ID12,855 12,856
RailroadLouisiana Railway & Navigation (LR&N)Louisiana Railway & Navigation (LR&N)
CountryUSAUSA
Whyte4-6-04-6-0
Number in Class63
Road Numbers92-94 / 392-39795-97
GaugeStdStd
Number Built63
BuilderBaldwinBaldwin
Year19131915
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)14 / 4.2714 / 4.27
Engine Wheelbase (ft / m)24.75 / 7.5424.75 / 7.54
Ratio of driving wheelbase to overall engine wheebase 0.57 0.57
Overall Wheelbase (engine & tender) (ft / m)57.59 / 17.5557.59 / 17.55
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)115,000 / 52,163115,000 / 52,163
Engine Weight (lbs / kg)154,000 / 69,853154,000 / 69,853
Tender Loaded Weight (lbs / kg)115,000 / 52,163115,000 / 52,163
Total Engine and Tender Weight (lbs / kg)269,000 / 122,016269,000 / 122,016
Tender Water Capacity (gals / ML)6000 / 22.736000 / 22.73
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)12 / 10.9012 / 10.90
Minimum weight of rail (calculated) (lb/yd / kg/m)64 / 3264 / 32
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)60 / 152458 / 1524
Boiler Pressure (psi / kPa)180 / 12.40200 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)20" x 26" / 508x66020" x 26" / 508x660
Tractive Effort (lbs / kg)26,520 / 12029.2830,483 / 13826.87
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.34 3.77
Heating Ability
Firebox Area (sq ft / m2)163 / 15.15163 / 15.15
Grate Area (sq ft / m2)28.50 / 2.6528.50 / 2.65
Evaporative Heating Surface (sq ft / m2)1786 / 165.991786 / 165.99
Superheating Surface (sq ft / m2)359 / 33.36359 / 33.36
Combined Heating Surface (sq ft / m2)2145 / 199.352145 / 199.35
Evaporative Heating Surface/Cylinder Volume188.92188.92
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation51305700
Same as above plus superheater percentage60026669
Same as above but substitute firebox area for grate area34,32838,142
Power L111,10411,927
Power MT638.61685.94