Graysonia, Nashville & Ashdown 2-6-0 "Mogul" Locomotives in the USA

Class Details by Steve Llanso of Sweat House Media

Class 26 (Locobase 15341)

Data from DeGolyer, Volume 77, pp. 790+. See also Locobase 6636 for a history of predecessor Memphis, Paris & Gulf and of the GN&A itself and "Graysonia, Nashville & Ashdown Railroad", in Richard Parks "Passenger Railroad Index -1930's-1940's" website at []. Works number was 59532 in September 1926.

The GN&A linked Ashdown, Arkansas's junction with the Frisco with the Missouri Pacific and Murfreesboro, Nashville & Southwestern at Nashville. Piston valves measuring 9 1/2" (241 mm) admitted steam to the cylinders. Its Vanderbilt tender had a cubic coal bunker ahead of the cylindrical water tank.

The 26 continued to serve the GN&A until the line converted to diesels in 1951. It then went to the more grandly named Nebraska Kansas Railroad in Superior, Neb. After that line sidetracked it in 1958, it was bought by W Calgren for display in Concordia, Kan in 1960.

By 1973, the 26 had been moved to Union, IL, where it joined the Illinois Railroad Museum roster. Long-standing plans to repair the firebox remained unfunded.

Principal Dimensions by Steve Llanso of Sweat House Media

Locobase ID15341
RailroadGraysonia, Nashville & Ashdown
Number in Class1
Road Numbers26
Number Built1
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft / m)12 / 3.66
Engine Wheelbase (ft / m)20.25 / 6.17
Ratio of driving wheelbase to overall engine wheelbase 0.59
Overall Wheelbase (engine & tender) (ft / m)49.40 / 15.06
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)105,000 / 47,627
Engine Weight (lbs / kg)123,000 / 55,792
Tender Loaded Weight (lbs / kg)100,000 / 45,359
Total Engine and Tender Weight (lbs / kg)223,000 / 101,151
Tender Water Capacity (gals / ML)5000 / 18.94
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)8 / 7
Minimum weight of rail (calculated) (lb/yd / kg/m)58 / 29
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)54 / 1372
Boiler Pressure (psi / kPa)180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)19" x 24" / 483x610
Tractive Effort (lbs / kg)24,548 / 11134.80
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.28
Heating Ability
Tubes (number - dia) (in / mm)244 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)11.75 / 3.58
Firebox Area (sq ft / m2)132 / 12.26
Grate Area (sq ft / m2)26 / 2.42
Evaporative Heating Surface (sq ft / m2)1622 / 150.69
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1622 / 150.69
Evaporative Heating Surface/Cylinder Volume205.84
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4680
Same as above plus superheater percentage4680
Same as above but substitute firebox area for grate area23,760
Power L14691
Power MT295.48

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Wes Barris