Louisiana Railway & Navigation 2-8-0 "Consolidation" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 90 (Locobase 6157)

Data from 1941 Louisiana & Arkansas diagram book of L&A locomotives supplied by Allen Stanley in March 2004. See also DeGolyer, Volume 43, p. 136+ and Volume 59, pp. 434+. (Thanks to Chris Hohl for his 6 October 2017 email noting the differences in fuel and tenders between the two pairs.) The pairs came seven years apart, the first set in 1912 and the second in 1919. Work numbers were 38843-38844 in November 1912, 52234 in August 1919, 52292 in September 1919.

The first pair of Consolidations were the first Baldwins built for th LR&N that were produced with superheaters. As Chris Hohl points out, they were delivered as coal burners and trailed tenders weighing 115,000 lb when loaded with 6,000 US gallons (22,710 litres) of water and 12 tons (10.9 metric tons) of coal. The 12" (305 mm) piston valves and outside radial valve gear accompanied the high-temperature steam. The first two had a specification that noted a maximum grade of 4% and rails weighing 70 lb/yard (35 kg/metre).

The other two supplemented the 2-8-0 power and essentially repeated the 1912 design, but had to wait their turns amidst construction of hundreds of United States Railroad Administration locomotives before being put in production as oil burners. Baldwin's specs gave equal quantiities of oil and water (3,000 gallons/11,355 litres) for the tenders. The USRA book's more likely quantities were used in Locobase's specs. According to Nicholas Muff's outline on http://www.rr-fallenflags.org/L&A, these locomotives were used primarily for yard duty.

The 90 was leased to subsidiary Alexandria Lumber Company for its exclusive use after its delivery; it was relettered for parent Louisiana & Arkansas took over all of the holdings in 1929. After World War II, the L&A sold the 90 to the Crossett Lumber Company in February 1947 as the latter's 15. The 91 served the LR&N and its successor, the L&A for almost 40 years before being sold to the Nacogdoches & Southeastern in March 1948. 98 went to the Ashley, Drew & Northern in February 1947 as their 135.

99's history included a relatively early (February 1944) sale to the West Feliciana of Saint Francisville, La. Five years later the WF passed the engine on to the South Shore of Jackson. La, which sent the 99 on to Monroe Sand & Gravel. Ultimately, the 99 was donated in March 1968 to the Illinois Railway Museum, which put it on display in Union, Ill.

Principal Dimensions by Steve Llanso of Sweat House Media
Locobase ID6157
RailroadLouisiana Railway & Navigation (LR&N)
Number in Class4
Road Numbers90-91, 98-99
Number Built4
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)14.17 / 4.32
Engine Wheelbase (ft / m)21.83 / 6.65
Ratio of driving wheelbase to overall engine wheebase 0.65
Overall Wheelbase (engine & tender) (ft / m)60.17 / 18.34
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)140,600 / 63,775
Engine Weight (lbs / kg)156,400 / 70,942
Tender Loaded Weight (lbs / kg)118,600 / 53,796
Total Engine and Tender Weight (lbs / kg)275,000 / 124,738
Tender Water Capacity (gals / ML)7000 / 26.52
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)2365 / 9
Minimum weight of rail (calculated) (lb/yd / kg/m)59 / 29.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51 / 1295
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)20" x 26" / 508x660
Tractive Effort (lbs / kg)31,200 / 14152.10
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.51
Heating Ability
Firebox Area (sq ft / m2)168 / 15.61
Grate Area (sq ft / m2)31.40 / 2.92
Evaporative Heating Surface (sq ft / m2)1671 / 155.30
Superheating Surface (sq ft / m2)314 / 31.60
Combined Heating Surface (sq ft / m2)1985 / 186.90
Evaporative Heating Surface/Cylinder Volume176.75
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation5652
Same as above plus superheater percentage6556
Same as above but substitute firebox area for grate area35,078
Power L18637
Power MT541.72

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