Duluth, South Shore, & Atlantic 2-8-0 "Consolidation" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class F (Locobase 1323)

Built as an 0-8-0 switcher for use at the ore docks in Marquette. Modified as 2-8-0, scrapped in November 1937. (http:/fp-www.wwnet.net/`dulong/dssa/locomot.thm)


Class F-1 (Locobase 1332)

Data from (http:/fp-www.wwnet.net/`dulong/dssa/locomot.thm) and from

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 31, p 113. Works numbers 32246, 32275-32276, 32300 in November 1907; 32334, 32365 in December.

Out of service in the mid-thirties.


Class F-2 (Locobase 1333)

Delivered as Detroit Southern 116 & 107 with 19 1/2 cylinders and 31,733-lb TE. Rebored to 20 x28 in 1910. 606 to Ford Motor Company in 1941, 607 scrapped in 1939.

(http:/fp-www.wwnet.net/`dulong/dssa/locomot.thm)


Class F-3 (Locobase 1334)

Data from DSS&A 1-1944 locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Biggest Consolidations on the line; most out of service by 1950.

(http:/fp-www.wwnet.net/`dulong/dssa/locomot.thm)


Class F-4 (Locobase 6668)

Data from DSS&A 1-1944 locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

These Consolidations, delivered after the First World War, outdid the F-3 (Locobase 1334) by wringing more tractive effort out the same boiler using a higher boiler pressure and more superheating surface. On the other hand, the ratio of boiler to cylinder suggest a system that would lose steam relatively soon into a continuous effort.

Specifications by Steve Llanso of Sweat House Media
ClassFF-1F-2F-3F-4
Locobase ID1323 1332 1333 1334 6668
RailroadDuluth, South Shore, & AtlanticDuluth, South Shore, & AtlanticDuluth, South Shore, & AtlanticDuluth, South Shore, & AtlanticDuluth, South Shore, & Atlantic
CountryUSAUSAUSAUSAUSA
Whyte2-8-02-8-02-8-02-8-02-8-0
Number in Class162122
Road Numbers90600-605606-607700-711918
GaugeStdStdStdStdStd
Number Built162122
BuilderBurnham, Williams & CoBurnham, Williams & CoAlco-BrooksAlco-BrooksAlco-Brooks
Year19071907190519131924
Valve GearStephensonStephensonWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase15.33'16'16'15.33'
Engine Wheelbase24.25'24.50'24.25'
Ratio of driving wheelbase to overall engine wheebase 0.66 0.65 0.63
Overall Wheelbase (engine & tender)53.67'53.17'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers170000 lbs152000 lbs164350 lbs166000 lbs
Engine Weight194000 lbs172000 lbs202000 lbs186300 lbs192000 lbs
Tender Light Weight100000 lbs110000 lbs115200 lbs121800 lbs
Total Engine and Tender Weight294000 lbs282000 lbs301500 lbs313800 lbs
Tender Water Capacity5000 gals5500 gals6000 gals6000 gals
Tender Fuel Capacity (oil/coal)10 tons tons9 tons9 tons
Minimum weight of rail (calculated)71 lb/yard63 lb/yard068 lb/yard69 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter51"55"57"55"51"
Boiler Pressure205 psi190 psi200 psi180 psi190 psi
Cylinders (dia x stroke)21" x 28"20" x 28"20" x 28"21" x 30"21" x 28"
Tractive Effort42189 lbs32887 lbs33404 lbs36803 lbs39102 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.03 4.62 4.47 4.25
Heating Ability
Firebox Area139 sq. ft151 sq. ft182 sq. ft180 sq. ft
Grate Area44 sq. ft40 sq. ft44.56 sq. ft44.40 sq. ft
Evaporative Heating Surface2439 sq. ft2710 sq. ft1471 sq. ft1330 sq. ft
Superheating Surface469 sq. ft509 sq. ft
Combined Heating Surface2439 sq. ft2710 sq. ft01940 sq. ft1839 sq. ft
Evaporative Heating Surface/Cylinder Volume217.29266.18122.31118.49
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation90207600080218436
Same as above plus superheater percentage902076000994610798
Same as above but substitute firebox area for grate area284952869004062243776
Power L148655928090589800
Power MT252.36343.92486.02520.61


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