Dublin & Southwestern / Durham & Southern 4-6-0 "Ten-wheeler" Locomotives of the USA

Class Details by Steve Llanso of Sweat House Media

Class 101 (Locobase 12720)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 27, pp. 138 and 235 and Volume 28, p. 167. Works number was 24775 in October 1904, 25738 in May 1905, and 27185 in January 1906.

The D & S ran over 28 1/2 miles of line from Dublin, Georgia to Eastman, where it connected with the Georgia, Florida & Southern.

Within a few years of its delivery, the Wrightsville & Tennille bought up the D & S as the last piece in its assembly of railroads and renumbered this trio 60-62. 60 eventually went to the Hawkinsville & Western. The 23-mile H & W had never prospered after its 1914 opening and was operated in its last two years by the Ocilla Southern. When the Hawkinsville to Perry leg was pulled up in 1920, 60 was sold to the locomotive resbuillder/reseller Georgia Car & Locomotive, and wound up on the McGowan Foshee Lumber Company in February 1921.

61 was off the W & T books by 1917.

62 went directly to GC & L, which sold it in July 1917 to Kentucky's Brooksville & Ohio River, to another rebuilder/reseller, the Southern Iron & Equipment in 1926, and finally circled back to the W & T.

Class 104 (Locobase 12839)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 28, p.139. Baldwin works numbers were 26543-26544 in October 1905, 27415-27416 in February 1906, and 31525 in August 1907.

The D & S operated this set of Ten-wheelers for decades on the short line between Durham southeasterly to Apex (19 miles distant), thence to Varina junction on the Southern (13 miles), and beyond another 23 miles to the junction at Dunn with the Atlantic Coast Line.

After more than 25 years on the D & S, 106 was sold in September 1930 to the Atlantic & Western of Sanford, NC. All but the boiler of the 107 was scrapped, but that vessel was mounted on 105's frame by Broadfoot Iron Works in August 1937; this engine was then renumbered 107. As such, it was sold to locomotive rebuilder/reseller Birmingham Rail & Locomotive, which sold the 107 to the United States Sugar Refining Company. They in turn sold the engine to the Atlantic & Western in June 1938 as their #9.

103 was sold to the Atlantic & Western in May 1939 as their #8. The A & W later sold the 8 to the Laurinburg & Southern as their 657. This engine adopted another number in July 1948 when it was sold to the Bennettsville & Cheraw of Bennettsville, SC.

Class 112 (Locobase 12841)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 43, p.140. (Thanks to Chris Hohl for 2 July 2015 email pointing out an incorrect boiler pressure.) Baldwin works number was 39325 in February 1913.

The D & S's last Baldwin Ten-wheeler was quite similar to the earlier quintet described in Locobase 12839. One difference was the 112 was heavier and its boiler had more room between tubes; the 30 fewer tubes cost about 200 sq ft of heating surface.

The D & S sold the 112 to Birmingham Rail & Locomotive, which sold it in August 1937 to United States Sugar Refiners as their 112.

Specifications by Steve Llanso of Sweat House Media
Locobase ID12,720 12,839 12,841
RailroadDublin & SouthwesternDurham & SouthernDurham & Southern
Number in Class151
Road Numbers101, 110-111 / 61, 60, 62104-107, 103112
Number Built151
BuilderBurnham, Williams & CoBurnham, Williams & CoBaldwin
Valve GearStephensonWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase (ft)12.8311.3311.33
Engine Wheelbase (ft)22.9822.1722.17
Ratio of driving wheelbase to overall engine wheebase 0.56 0.51 0.51
Overall Wheelbase (engine & tender) (ft)48.58
Axle Loading (Maximum Weight per Axle) (lbs)
Weight on Drivers (lbs)72,00092,50098,000
Engine Weight (lbs)95,000116,500126,000
Tender Loaded Weight (lbs)57,00080,00090,000
Total Engine and Tender Weight (lbs)152,000196,500216,000
Tender Water Capacity (gals)300045004500
Tender Fuel Capacity (oil/coal) (gals/tons)6
Minimum weight of rail (calculated) (lb/yd)405154
Geometry Relating to Tractive Effort
Driver Diameter (in)565657
Boiler Pressure (psi)180180185
High Pressure Cylinders (dia x stroke) (in)16" x 24"18" x 26"18" x 26"
Tractive Effort (lbs)16,78623,01623,240
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.29 4.02 4.22
Heating Ability
Firebox Area (sq ft)90152172.90
Grate Area (sq ft)15.5022.2022.40
Evaporative Heating Surface (sq ft)122219201717
Superheating Surface (sq ft)
Combined Heating Surface (sq ft)122219201717
Evaporative Heating Surface/Cylinder Volume218.80250.73224.22
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation279039964144
Same as above plus superheater percentage279039964144
Same as above but substitute firebox area for grate area16,20027,36031,987
Power L1502958805925
Power MT461.96420.43399.87


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