4-4-0 "American" Steam Locomotives in the USA

Alabama Great Southern


Class Details by Steve Llanso of Sweat House Media

Class A2-simpled (Locobase 6100)

Data from the 1917 Alabama Great Southern locomotive diagram book supplied in March 2004 by Allen Stanley from his extensive Rail Data Exchange. The Pittsburgh works number was 1452 in April 1893.

Delivered to the AGS as a cross-compound locomotive using the Pittsburgh variaton of an intercepting valve. As with most such North American compounds, whatever gains in fuel economy might appeared, they didn't compensate for the additional maintenance required and the shops soon reconfigured the 115 as a simple-expansion locomotive.

The AGS renumbered the 115 as 174, perhaps at the same time they replaced the cross-compound setup.

Sold for scrap in March 1913, hence it never took a Southern Railways System road number.


Class E3 (Locobase 7957)

Data from CNO&TP 1893 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. (Thanks to Samuel Smith for his 23 May 2024 email clearing up Locobase's confusion about which Queen & Crescent railroads later joned which larger system.) Works numbers were 2503 and 2505 in November 1878.

These low-drivered Eight-wheelers were used in mixed passenger-freight operations. They later moved over to the Vicksburg, Shreveport & Pacific as road # 317 and 320. Successive rosters show the 320 was gone by 1904 and the 317 by 1911.

Principal Dimensions by Steve Llanso of Middle Run Media
ClassA2-simpledE3
Locobase ID6100 7957
RailroadAlabama Great SouthernAlabama Great Southern
CountryUSAUSA
Whyte4-4-04-4-0
Number in Class12
Road Numbers115/17422-23/317, 320
GaugeStd5'
Number Built2
BuilderAGSRogers
Year19021878
Valve GearStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)8 / 2.44 6.17 / 1.88
Engine Wheelbase (ft / m)22.50 / 6.8621.58 / 6.58
Ratio of driving wheelbase to overall engine wheelbase 0.36 0.29
Overall Wheelbase (engine & tender) (ft / m)49.04 / 14.9544.46 / 13.55
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)68,000 / 30,84442,500 / 19,278
Engine Weight (lbs / kg)115,000 / 52,16368,000 / 30,844
Tender Loaded Weight (lbs / kg)92,600 / 42,003
Total Engine and Tender Weight (lbs / kg)207,600 / 94,166
Tender Water Capacity (gals / ML)4200 / 15.912600 / 9.85
Tender Fuel Capacity (oil/coal) (gals/tons / Liters/MT)
Minimum weight of rail (calculated) (lb/yd / kg/m)57 / 28.5035 / 17.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)73 / 185452 / 1321
Boiler Pressure (psi / kPa)180 / 1240140 / 970
High Pressure Cylinders (dia x stroke) (in / mm)18" x 26" / 457x66017" x 24" / 432x610
Tractive Effort (lbs / kg)17,656 / 8008.6415,873 / 7199.88
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.85 2.68
Heating Ability
Tubes (number - dia) (in / mm)240 - 2" / 51164 - 2" / 51
Flues (number - dia) (in / mm)
Flue/Tube length (ft / m)10.83 / 3.3011.17 / 3.40
Firebox Area (sq ft / m2)123 / 11.43
Grate Area (sq ft / m2)26.80 / 2.49
Evaporative Heating Surface (sq ft / m2)1473 / 136.85
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1473 / 136.85
Evaporative Heating Surface/Cylinder Volume192.30
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation4824
Same as above plus superheater percentage4824
Same as above but substitute firebox area for grate area22,140
Power L15970
Power MT387.11

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