Atlantic Coast Line / Savannah, Florida & Western / South Florida / Wilmington, Columbia & Augusta 2-6-0 "Mogul" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class 1 (Locobase 16261)

Data from Baldwin Locomotive Works Specification for Engines, as digitized by the DeGolyer Library of Southern Methodist University, Volume 13, p. 95. Works numbers were 8083-8084, 8086, 8090 in August 1886.

Produced in Philadelphia at the same time as the SF's first standard-gauge Eight-wheelers (Locobase 16260), these Moguls burned wood as did the rest of the roster. Baldwin originally estimated their adhesion weight as shown in the Locobase specs. By the time the ACL included them in a table of specs, however, weight on the drivers had increased to 71,200 lb (32,296 kg) and engine weight had grown commensurately to 87,200 lb (39,553 kg).

Although they were renumbered 201-204 by the Savannah, Florida & Western and 603-606 by the Atlantic Coast Line, the latter railroad did not place them in a class.

605 was sold to Weldon Lumber Company in March 1913.

[NB: The direct heating surface area and, consequently, the evaporative heating surface area are estimates based on known firebox areas for other similar 2-6-0s from Baldwin added to the calculated tube heating surface areas.]


Class 10/D1 (Locobase 7351)

Data from ACL 1913 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 3094-3095 in September 1882.

These Moguls were bought by the ACL of South Carolina from Rogers at the same time as the 4-4-0s shown in Locobase 7350. Most of the dimensions are similar and vary primarily to accommodate a 2-6-0 arrangement rather than the Eight-wheeler. The steam dome sits proudly over the firebox crown sheet while the equally ornate sand dome hovers over the leading driven axle.


Class 11/G-4 (Locobase 16266)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 10, p. 154. Works number was 5447 in January 1881.

This locomotive is usually catalogued as an 0-6-0 switcher, but the original spec referenced above shows that the 32 was ordered as a broad-gauge (5 feet), wood-burning Mogul. Its front truck had a radius bar pin that shifted sideways, increasing its ability to negotiate curves.

Sometime later, perhaps only after the Atlantic Coast Line took over the SF&W in 1902, tthe 32 received a new number (172) and lost the front truck. Another renumbering to 1178 placed it in the switcher group, where it remained until it was scrapped in 1917.


Class 27 (Locobase 11715)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Vol 16, p. 163 Works numbers were 11468-11470 in December 1890.

The South Florida was acquired by the Plant System's Savannah, Florida & Western in 1893 and renumbered 228-229, 227. Nine years later the class was taken up by the Atlantic Coast Line when it acquired the SF&W and again renumbered, this time 661-662 and 660.


Class 32 (Locobase 16263)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 10, p. 154. Works number was 5447 in January 1881.

This locomotive is usually catalogued as an 0-6-0 switcher, but the original spec referenced above shows that the 32 was ordered as a broad-gauge (5 feet), wood-burning Mogul. Its front truck had a radius bar pin that shifted sideways, increasing its ability to negotiate curves.

Sometime later, perhaps only after the Atlantic Coast Line took over the SF&W in 1902, tthe 32 received a new number (172) and lost the front truck. Another renumbering to 1178 placed it in the switcher group, where it remained until it was scrapped in 1917.


Class G (Locobase 7353)

Data from DeGolyer, Volume 19, p. 82. ACL 1930 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. Works numbers were 13962-13963, 13967, and 13974 in March 1894 and 14686-14688 in February 1896.

Four Moguls supplied by Baldwin in February 1894 went to the Wilmington & Weldon, a principal constituent of the ACL when it formed four years later. The other three were delivered to the Norfolk & Carolina, which connected a W & W branch from Tarboro, NC to Pinner's Point, Va, which served Hampton Roads. For some reason, N&C 416 received ACL number 114.

The 60-ton design's firebox was quite deep, measuring 85 1/4" (2.17 m) in front and 84 1/4" (2.14 m) in back. The boiler, said a note, was designed "to carry compound pressure 180/200 lbs". Locobase suspects this referred to the ability to convert these engines to four-cylinder Vauclain compounds, which used boilers pressed to such an extent. Both the boiler and dome were lagged with asbestos, the mineral fibre available both in blankets and in blocks, that had come into wider user very soon before.

As ACL class G engines, they served three decades and more before being scrapped between April 1929 and October 1933.

Specifications by Steve Llanso of Sweat House Media
Class110/D111/G-42732
Locobase ID16,261 7351 16,266 11,715 16,263
RailroadSouth Florida (ACL)Wilmington, Columbia & Augusta (ACL)Savannah, Florida & Western (ACL)South Florida (ACL)Savannah, Florida & Western (ACL)
CountryUSAUSAUSAUSAUSA
Whyte2-6-02-6-02-6-02-6-02-6-0
Number in Class52331
Road Numbers1-4/201-204/603-60610-11/698-699 / 102-10311, 17, 21/622, 609, 62128-29, 2732/172/1178
GaugeStdStd5'Std5'
Number Built52331
BuilderBurnham, Parry, Williams & CoRogersBurnham, Williams & CoBurnham, Parry, Williams & CoBurnham, Williams & Co
Year18861882188518901881
Valve GearStephensonStephensonStephensonStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)14.501514.501514.17
Engine Wheelbase (ft)21.8322.5621.8322.9221.50
Ratio of driving wheelbase to overall engine wheebase 0.66 0.66 0.66 0.65 0.66
Overall Wheelbase (engine & tender) (ft)43.5043.60
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)62,00068,00066,000
Engine Weight (lbs)74,00084,70078,00064,200
Tender Loaded Weight (lbs)62,000
Total Engine and Tender Weight (lbs)146,700
Tender Water Capacity (gals)30002700300035002000
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)343837
Geometry Relating to Tractive Effort
Driver Diameter (in)525054.755354.75
Boiler Pressure (psi)130140130160130
High Pressure Cylinders (dia x stroke) (in)16" x 24"17" x 24"17" x 24"18" x 24"16" x 24"
Tractive Effort (lbs)13,05616,50813,99919,95412,400
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.75 4.12 4.71
Heating Ability
Firebox Area (sq ft)7987.71122.80
Grate Area (sq ft)15.5014.8715.501714.40
Evaporative Heating Surface (sq ft)95510831394
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)95510831394
Evaporative Heating Surface/Cylinder Volume170.99171.77197.21
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation20152082201527201872
Same as above plus superheater percentage20152082201527201872
Same as above but substitute firebox area for grate area10,27012,27919,648
Power L1272328154015
Power MT290.48273.79

Specifications by Steve Llanso of Sweat House Media
ClassG
Locobase ID7353
RailroadAtlantic Coast Line (ACL)
CountryUSA
Whyte2-6-0
Number in Class6
Road Numbers147-150, 414-416 / 306-311 / 665-70
GaugeStd
Number Built6
BuilderBurnham, Williams & Co
Year1894
Valve GearStephenson
Locomotive Length and Weight
Driver Wheelbase (ft)15.42
Engine Wheelbase (ft)23.50
Ratio of driving wheelbase to overall engine wheebase 0.66
Overall Wheelbase (engine & tender) (ft)46.54
Axle Loading (Maximum Weight per Axle) (lbs)37,260
Weight on Drivers (lbs)99,850
Engine Weight (lbs)119,100
Tender Loaded Weight (lbs)62,800
Total Engine and Tender Weight (lbs)181,900
Tender Water Capacity (gals)3600
Tender Fuel Capacity (oil/coal) (gals/tons)
Minimum weight of rail (calculated) (lb/yd)55
Geometry Relating to Tractive Effort
Driver Diameter (in)63
Boiler Pressure (psi)160
High Pressure Cylinders (dia x stroke) (in)19" x 24"
Tractive Effort (lbs)18,703
Factor of Adhesion (Weight on Drivers/Tractive Effort) 5.34
Heating Ability
Firebox Area (sq ft)146
Grate Area (sq ft)17.60
Evaporative Heating Surface (sq ft)1617
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)1617
Evaporative Heating Surface/Cylinder Volume205.31
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation2816
Same as above plus superheater percentage2816
Same as above but substitute firebox area for grate area23,360
Power L15006
Power MT331.59

Reference


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