Central of Georgia / Chattanooga, Rome & Southern / Savannah & Western 4-6-0 "Ten-wheeler" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 136 (Locobase 11829)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 12 , p .95 Works numbers were 7403-7404, 7412, 7414 in August 1884; 7419, 7422, 7436, 7440 in September; and 7445-7446, 7481 in October.

These were among the first Ten-wheelers on the Central Railroad & Banking Company of Georgia's rails.

After about 20 years of service, the class was sold in a batch to I Joseph. 1301 went first to Russell & Oliver in Belmont, Missouri, then onto the Centre Espanola. 1304 later served the American Pipe & Construction Company. 1305 operated on the Sylvania Central from 1904, 1309 for the Saratoga & Encampment from 1908..


Class 1366 (Locobase 7919)

Data from the CofGA 1905 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Locobase cannot identify the works number for this locomotive - could it have come from the Santa Fe?

Locobase notes the boiler profile of this locomotive -- swollen back half with steam dome right over the firebox's forward sheet and the 2nd driving axle dramatically shrinking in size over the front truck. It's a relatively older design. But the weight distribution on the 3 axles is decidedly unbalanced. The leading axle bore 25,850 lb, the middle axle 37,150 lb, and the rear axle 19,150 lb. So the middle axle probably carried the eccentrics for the inside valve gear as well as the steam dome and perhaps a significant percentage of the firebox.


Class 26 (Locobase 7920)

Data from the CofGA 1905 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also DeGolyer, Volume 21, p. 261. Works number was 16263 in October 1898.

Although the profile is similar to that of the Manchester engine described in Locobase 7919, this engine was of later vintage. Soon after its delivery to the CR&S, that railway was absorbed by the Central of Georgia, which renumbered the 26 twice. By then, boiler pressure had been raised to 180 psi (12.4 bar) and the tender carried 5,000 US gallons (18,925 litres) of water.

After almost two more decades, the 1385 was sold in July 1917 to the Wrightsville & Tennessee for service as their #30. Two years later the W & T sold the 30 to Georgia Car & Locomotive, which numbered it 425 and resold it to Finkbine Lumber Company in October 1919.


Class 650 (Locobase 7903)

Data from the CofGA 1905 and CofGA 4 -1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also DeGolyer, Volume 16, p.10. Works numbers were 10781, 10785-10787, 10793 in April 1890; 10852-10853, 10855-10857, and 10860-10865 in May.

Like Locobase 7901, which in fact followed this class, this locomotive offers only the visual evidence from the diagrams. The railroad went into service in 1885 and grew quickly by amalgamating seven different railroads. When assembled, the main line connected Americus and Birmingham, Ala via Columbus, Ga.

Soon after the road bought this set of locomotives, it built some more track and acquired three more railroads. Such expansive activity proved ill-timed; the Panic of 1893 sent the S & W into bankruptcy and, with the exception of the Chattanooga, Rome & Columbus, it was absorbed by the Central of Georgia.

Most of the newly renumbered class was scrapped in the teens. Three (1340, 1342, and 1346) went to the Georgia Car & Locomotive in 1917. 230 was sold in 1930 to the Bowdon Railroad. 1303 went to the Virginia Central in 1917 as their #2 and was later sold to the Cuban Sugar Mills in Havana. The Central Ulacia in Cuba bought 1307 in 1917 and renumbered as 3.


Class T (Locobase 7901)

Data from the CofGA 1905 and CofGA 4 -1927 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also DeGolyer, Volume 16, p. 86. Works numbers were 11090, 11092,11094-11096, 11098-11101, 11103-11104, 11106-11107, 11110 in August 1890.

The locomotive's profile has the swollen boiler around the firebox compared to the slender first course. A large steam dome perched over the second driving axle ahead of the firebox. Compared to Locobase 7903, which apparently preceded these engines, the 1356s were a bit larger and heavier.

They were delivered to the Savannah & Western as 700-704 and to the "Central Railroad & Banking Company" as 300-307.

Most stayed with the Central of Georgia until they were scrapped, but 232 went to the Talbotton Railroad where it ran until January 1953, the 1362 was sold to the Wrightsville & Tennille, the 300 was sold to the Georgia Northern in 1919, and the 307 ended up on the Utah Central.


Class T / 1397 (Locobase 7930)

Data from the CofGA 12 - 1925 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 6112-6114 in 1904.

Firebox heating surface included 30 sq ft of arch tubes.

High-pitched boiler and sloping firebox over the rear drivers mark this design as turn-of-the-century. This trio was identical to the 1902s (Locobase 7931) except for the cylinder dimensions and smaller driver diameter. . The three engines remained in service with the C of Ga until 1934.


Class T / 1600 (Locobase 7931)

Data from the CofGA 12 - 1925 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. See also "Thermic Syphon Tests on Central of Georgia", The Railway Age (20 June 1922), pp. 1625-1626.Works numbers were 5835-5840 in 1902 and 6097-6101 in 1904.

Firebox heating surface included 30 sq ft of arch tubes. These were the only pure passenger Ten-wheelers bought by the Central of Georgia, which soon adopted the 4-6-2 layout. They still had relatively narrow fireboxes whose heating surface, but the boiler rode higher and the forward part of the grate was sloped. Also, the boiler grew and the result was a heftier profile.

The 1927 diagram book shows the 405 with a substantially altered firebox in which arch tubes were cut to one (for 13.8 sq ft) in favor of a thermic syphon which added 28.5 sq ft to the firebox heating surface, which now amounted to 207.3 sq ft. For some reason, the boiler lost two firetubes as well. 407 had its cylinder diameter cut by 2" to 19".

The June 1922 RA report explains that the 1605 was chosen because the 1600 class had never been considered "free steamers and at times have given considerable trouble due to lack of steam." 1609 ran comparative trials over the same course. Both were shopped at the same time and received repairs to bring them as close to equal as possible. The only difference, claimed the railroad, was the thermic syphon. December 1921 trips over a 200-mile round trip division pulled trains carefully made up to vary by 10 trailing tons or less. Result: 1605, the syphon engine, burned 14% less coal per thousand gross ton-miles than its unmodified stablemate and consumed 6% less water.

Three were later superheated; see Locobase 7932.


Class T / 406 (Locobase 7932)

Data from the CofGA 12 - 1925 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

When the C of Ga modified their Ten-wheelers to accept superheaters, the alterations proved more extensive than most such makeovers. As with many of these engines, the adoption of superheat meant a substantial reduction in firetubes. In this case 119 were removed in favor of 21 flues for the Type A superheater. In the firebox, one thermic syphon of 27 sq ft (2.5 sq m) joined 15 sq ft (1.4 sq m) of arch tubes to supplement the direct heating surface area.

Cylinder size was reduced by an inch and boiler pressure dropped by 10 psi (in 403, it was reduced to 185 psi). Slide valves were replaced by 12" piston valves which were now actuated by Walschaert radial valve gear. In addition, the engines gained almost 5 tons of adhesion weight (9,400 lb) and 6 1/2 tons of engine weight overall.

Specifications by Steve Llanso of Sweat House Media
Class136136626650T
Locobase ID11829 7919 7920 7903 7901
RailroadCentral of Georgia (CofGa)Central of Georgia (CofGa)Chattanooga, Rome & Southern (CofGa)Savannah & Western (CofGa)Savannah & Western (CofGa)
CountryUSAUSAUSAUSAUSA
Whyte4-6-04-6-04-6-04-6-04-6-0
Number in Class11111613
Road Numbers136-146 / 1300-1310136626 / 1367 / 1385650-665 / 1340-1355300-308, 700-04/ 232-240
GaugeStdStdStdStdStd
Number Built11111613
BuilderBurnham, Parry, Williams & CoManchesterBurnham, Williams & CoBurnham, Parry, Williams & CoBurnham, Parry, Williams & Co
Year18841891189818901890
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase13.08'15'11.50'14.44'14.42'
Engine Wheelbase23.23'25.58'22.17'24.90'24.92'
Ratio of driving wheelbase to overall engine wheebase 0.56 0.59 0.52 0.58 0.58
Overall Wheelbase (engine & tender)49.42'49.37'47.94'48.58'
Axle Loading (Maximum Weight per Axle)37150 lbs30650 lbs27500 lbs28033 lbs
Weight on Drivers61000 lbs82150 lbs81850 lbs80200 lbs84100 lbs
Engine Weight80000 lbs111850 lbs117650 lbs108500 lbs115800 lbs
Tender Light Weight61800 lbs80000 lbs76700 lbs69000 lbs
Total Engine and Tender Weight173650 lbs197650 lbs185200 lbs184800 lbs
Tender Water Capacity2400 gals3000 gals4000 gals4500 gals3300 gals
Tender Fuel Capacity (oil/coal)8 tons10 tons7 tons7 tons
Minimum weight of rail (calculated)34 lb/yard46 lb/yard45 lb/yard45 lb/yard47 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter56"56"56"56"57"
Boiler Pressure140 psi150 psi170 psi140 psi149 psi
Cylinders (dia x stroke)18" x 24"19" x 26"19" x 24"18" x 24"19" x 24"
Tractive Effort16524 lbs21370 lbs22356 lbs16524 lbs19251 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.69 3.84 3.66 4.85 4.37
Heating Ability
Firebox Area104 sq. ft136.70 sq. ft144.20 sq. ft136 sq. ft155.56 sq. ft
Grate Area16 sq. ft18.78 sq. ft23.38 sq. ft18.48 sq. ft18.74 sq. ft
Evaporative Heating Surface1191 sq. ft1716 sq. ft1931 sq. ft1591 sq. ft1661 sq. ft
Superheating Surface
Combined Heating Surface1191 sq. ft1716 sq. ft1931 sq. ft1591 sq. ft1661 sq. ft
Evaporative Heating Surface/Cylinder Volume168.49201.12245.18225.08210.90
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation22402817397525872792
Same as above plus superheater percentage22402817397525872792
Same as above but substitute firebox area for grate area1456020505245141904023178
Power L131633937534341984383
Power MT342.94316.97431.74346.20344.69

Specifications by Steve Llanso of Sweat House Media
ClassT / 1397T / 1600T / 406
Locobase ID7930 7931 7932
RailroadCentral of Georgia (CofGa)Central of Georgia (CofGa)Central of Georgia (CofGa)
CountryUSAUSAUSA
Whyte4-6-04-6-04-6-0
Number in Class3114
Road Numbers1397-1399 / 297-2991600-1610 / 400-410403-404, 406,408
GaugeStdStdStd
Number Built311
BuilderRogersRogersC of Ga
Year190419021925
Valve GearStephensonStephensonWalschaert
Locomotive Length and Weight
Driver Wheelbase13'13'13'
Engine Wheelbase23.58'23.58'23.58'
Ratio of driving wheelbase to overall engine wheebase 0.55 0.55 0.55
Overall Wheelbase (engine & tender)54.91'54.91'47.75'
Axle Loading (Maximum Weight per Axle)44500 lbs44500 lbs
Weight on Drivers126300 lbs126300 lbs135700 lbs
Engine Weight156700 lbs156700 lbs169600 lbs
Tender Light Weight108000 lbs108000 lbs108000 lbs
Total Engine and Tender Weight264700 lbs264700 lbs277600 lbs
Tender Water Capacity5000 gals5000 gals5000 gals
Tender Fuel Capacity (oil/coal)13 tons13 tons13 tons
Minimum weight of rail (calculated)70 lb/yard70 lb/yard75 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter63"70"69"
Boiler Pressure200 psi200 psi190 psi
Cylinders (dia x stroke)19" x 26"21" x 26"20" x 26"
Tractive Effort25327 lbs27846 lbs24342 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.99 4.54 5.57
Heating Ability
Firebox Area195 sq. ft195 sq. ft207 sq. ft
Grate Area30 sq. ft30.56 sq. ft30.56 sq. ft
Evaporative Heating Surface2151 sq. ft2151 sq. ft1718 sq. ft
Superheating Surface380 sq. ft
Combined Heating Surface2151 sq. ft2151 sq. ft2098 sq. ft
Evaporative Heating Surface/Cylinder Volume252.11206.37181.72
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation600061125806
Same as above plus superheater percentage600061126852
Same as above but substitute firebox area for grate area390003900046409
Power L17694699814267
Power MT402.91366.46695.36

Reference


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