2-8-0 "Consolidation" Steam Locomotives in the USA

Ligonier Valley


Class Details by Steve Llanso of Sweat House Media

Class 15 (Locobase 13930)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volume 41, p. 196. See also the Ligonier Valley Rail Road Association website at [], last accessed 8 March 2012. Works number was 33352 in April 1909.

The LVRR measured 16 miles from the coal fields north of Ligonier to the Pennsylvania Railroad junction at Latrobe in western Pennsylvania. According to the LVRA, "It also connected the rest of the world with Pennsylvania's Mountain Playground, Ligonier Valley in general, and Idlewild Park in particular." During the 3/4-century operating life that ended on 31 August 1952, the LVRR moved 32 million tons of freight (mostly stone, coal, and coke) and carried 9 million passengers.

The 15 served the Liggie from the time of its delivery to the end of its career, which ended in 1949.


Class 16 (Locobase 13931)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University, Volumes 41, p. 196; 51, p. 320; and 53, p. 387. Works numbers were 40944 in November 1913, 42630 in October 1915, and 43284 in May 1916.

Essentially repeating the design found in LVRR 15, the latter Consolidations found in the current entry had four arch tubes that accounted for an additional 27.2 sq ft of direct heating surface area. The valve gear is described as "Walschaerts Improved".

Principal Dimensions by Steve Llanso of Middle Run Media
Class1516
Locobase ID13930 13931
RailroadLigonier ValleyLigonier Valley
CountryUSAUSA
Whyte2-8-02-8-0
Number in Class13
Road Numbers1516, 18-19
GaugeStdStd
Number Built13
BuilderBurnham, Williams & CoBaldwin
Year19091913
Valve GearWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)15.33 / 4.6715.33 / 4.67
Engine Wheelbase (ft / m)23.67 / 7.2123.67 / 7.21
Ratio of driving wheelbase to overall engine wheelbase 0.65 0.65
Overall Wheelbase (engine & tender) (ft / m)56.26 / 17.5356.69 / 17.28
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)157,000 / 68,493159,000 / 72,121
Engine Weight (lbs / kg)175,000 / 77,111178,000 / 80,740
Tender Loaded Weight (lbs / kg)126,000 / 58,967126,000 / 57,153
Total Engine and Tender Weight (lbs / kg)301,000 / 136,078304,000 / 137,893
Tender Water Capacity (gals / ML)7000 / 26.527000 / 26.52
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)14 / 1312 / 11
Minimum weight of rail (calculated) (lb/yd / kg/m)65 / 32.5066 / 33
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)55 / 144855 / 1397
Boiler Pressure (psi / kPa)200 / 1380200 / 1380
High Pressure Cylinders (dia x stroke) (in / mm)21" x 28" / 533x71121" x 28" / 533x711
Tractive Effort (lbs / kg)38,167 / 17312.2838,167 / 17312.28
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.11 4.17
Heating Ability
Tubes (number - dia) (in / mm)268 - 2.25" / 57268 - 2.25" / 57
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)14.50 / 4.4214.50 / 4.42
Firebox Area (sq ft / m2)173 / 16.10202.20 / 18.78
Grate Area (sq ft / m2)46.60 / 4.3346.60 / 4.33
Evaporative Heating Surface (sq ft / m2)2449 / 227.522478 / 230.21
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2449 / 227.522478 / 230.21
Evaporative Heating Surface/Cylinder Volume218.27220.86
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation93209320
Same as above plus superheater percentage93209320
Same as above but substitute firebox area for grate area34,60040,440
Power L154155701
Power MT304.15316.19

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