Central of Georgia 2-6-0 "Mogul" Locomotives in the USA

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Class Details by Steve Llanso of Sweat House Media

Class 1400 (Locobase 7905)

Data from the CofGA 1905 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 3837 in October 1887, 3840, 3844 in November, 3874-3875, 3877-3878, 3886-3888 in December, 3945-3947, 3951 in May 1888, 3954 in June

Firebox heating surface that included 25.15 sq ft of arch tubes.

Locobase can tell that these Moguls were delivered in differing batches, possibly as part of a larger order that included Dickson-built locomotives (Locobase 7921). Because both the tube and total heating surface areas were changed in ink such that the new values are uncertain, the evaporative heating surface is an estimate based on his own calculation of tube heating surface area and the addition of the 119 sq ft of firebox area.


Class 1410 (Locobase 7921)

Data from the CofGA 1905 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 725-726 in November 1889, 727-730 in December, 734 in

Firebox heating surface that included 25.15 sq ft of arch tubes.

Compared to the Rogers Moguls shown in Locobase 7904, these Dicksons were heavier and had a significantly larger, but still narrow, grate. On the other hand, the boiler profile shows a short course with steam dome over the firebox, noticeable taper to a long first course. The builder supplied 20 slightly larger locomotives with the same power dimensions a year before; see Locobase 7922.


Class 1460 (Locobase 7922)

Data from the CofGA 1905 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 657-664 in September 1888, 665-666 in October, 678-683 in December, and 684-687 in January 1889.

Firebox heating surface that included 25.15 sq ft of arch tubes.

This was the earlier, larger batch of Moguls that the C of Ga procured from Scranton, Pa's Alco predecessor. A later batch of 10 with a slightly smaller boiler and grate would follow within the year; see Locobase 7921.

By 1927, when the 1473 was the only Mogul left on the Central of Georgia's roster, the original firebox area had been augmented by 16.75 sq ft of arch tubes (or the 1905 diagram hadn't bothered to note arch tubes -- an omission Locobase has seen in other diagrams).

1471 was sold to Georgia Car & Locomotive, which renumbered it 356, refurbished it, and sold it to Cuba Cane Sugar Corporation as their #1.

Specifications by Steve Llanso of Sweat House Media
Class140014101460
Locobase ID7905 7921 7922
RailroadCentral of Georgia (CofGa)Central of Georgia (CofGa)Central of Georgia (CofGa)
CountryUSAUSAUSA
Whyte2-6-02-6-02-6-0
Number in Class151020
Road Numbers1400-1409, 1420-1424180-189 / 1410-1419520-539 / 1460-1479
GaugeStdStdStd
Number Built151020
BuilderRogersDicksonDickson
Year188718891888
Valve GearStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)15.65 / 4.7714 / 4.2714 / 4.27
Engine Wheelbase (ft / m)23.27 / 7.0921.75 / 6.6321.75 / 6.63
Ratio of driving wheelbase to overall engine wheebase 0.67 0.64 0.64
Overall Wheelbase (engine & tender) (ft / m)44.85 / 13.6748.50 / 14.7848.29 / 14.72
Axle Loading (Maximum Weight per Axle) (lbs / kg)26,600 / 12,06628,100 / 12,74633,500 / 15,195
Weight on Drivers (lbs / kg)75,600 / 34,29284,300 / 38,23889,600 / 40,642
Engine Weight (lbs / kg)91,600 / 41,54996,600 / 43,817103,000 / 46,720
Tender Loaded Weight (lbs / kg)55,400 / 25,12968,200 / 30,93565,800 / 29,846
Total Engine and Tender Weight (lbs / kg)147,000 / 66,678164,800 / 74,752168,800 / 76,566
Tender Water Capacity (gals / ML)3099 / 11.743000 / 11.362984 / 11.30
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)7 / 6.407 / 6.407 / 6.40
Minimum weight of rail (calculated) (lb/yd / kg/m)42 / 2147 / 23.5050 / 25
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)56 / 142256 / 142256 / 1422
Boiler Pressure (psi / kPa)140 / 9.70140 / 9.70140 / 9.70
High Pressure Cylinders (dia x stroke) (in / mm)18" x 24" / 457x61018" x 24" / 457x61018" x 24" / 457x610
Tractive Effort (lbs / kg)16,524 / 7495.1716,524 / 7495.1716,524 / 7495.17
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.58 5.10 5.42
Heating Ability
Firebox Area (sq ft / m2)119 / 11.06133.90 / 12.44137 / 12.73
Grate Area (sq ft / m2)16.50 / 1.5322.30 / 2.0726.25 / 2.44
Evaporative Heating Surface (sq ft / m2)1271 / 118.081326 / 123.231369 / 127.23
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)1271 / 118.081326 / 123.231369 / 127.23
Evaporative Heating Surface/Cylinder Volume179.81187.59193.67
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation231031223675
Same as above plus superheater percentage231031223675
Same as above but substitute firebox area for grate area16,66018,74619,180
Power L1344936893797
Power MT301.74289.43280.28

Reference