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


Class Details by Steve Llanso of Sweat House Media

Class F (Locobase 1323)

Data from DeGolyer, Volume 29, p. 272. See also http:/fp-www.wwnet.net/`dulong/dssa/locomot.thm

Built as an 0-8-0 switcher for use at the ore docks in Marquette. Modified as 2-8-0, scrapped in November 1937.


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 Rail Data Exchange. See also (http:/fp-www.wwnet.net/`dulong/dssa/locomot.thm). Works numbers were 53576-53590 in June 1913.

Biggest Consolidations on the line; most out of service by 1950. Canada's Western Dominion Coal of Taylorton, Saskatchewan bought the 706 in August 1946 and operated it until it was scrapped 1961.


Class F-4 (Locobase 6668)

Data from DSS&A 1-1944 locomotive diagram book supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 65966-65967 in November 1924.

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.

Principal Dimensions 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 Wheelbase (ft / m)15.33 / 4.6716 / 4.8816 / 4.8815.33 / 4.67
Engine Wheelbase (ft / m)24.25 / 7.3924.50 / 7.4724.25 / 7.39
Ratio of driving wheelbase to overall engine wheebase 0.66 0.65 0.63
Overall Wheelbase (engine & tender) (ft / m)53.67 / 16.3653.17 / 16.21
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)170,000 / 77,111152,000 / 68,946164,350 / 74,548166,000 / 75,296
Engine Weight (lbs / kg)194,000 / 87,997172,000 / 78,018202,000 / 91,626186,300 / 84,504192,000 / 87,090
Tender Loaded Weight (lbs / kg)100,000 / 45,359110,000 / 49,895115,200 / 52,254121,800 / 55,248
Total Engine and Tender Weight (lbs / kg)294,000 / 133,356282,000 / 127,913301,500 / 136,758313,800 / 142,338
Tender Water Capacity (gals / ML)5000 / 18.945500 / 20.836000 / 22.736000 / 22.73
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)10 / 9.109 / 8.209 / 8.20
Minimum weight of rail (calculated) (lb/yd / kg/m)71 / 35.5063 / 31.5068 / 3469 / 34.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)51 / 129555 / 139757 / 144855 / 139751 / 1295
Boiler Pressure (psi / kPa)205 / 14.10190 / 13.10200 / 13.80180 / 12.40190 / 13.10
High Pressure Cylinders (dia x stroke) (in / mm)21" x 28" / 533x71120" x 28" / 508x71120" x 28" / 508x71121" x 30" / 533x76221" x 28" / 533x711
Tractive Effort (lbs / kg)42,189 / 19136.6332,887 / 14917.3133,404 / 15151.8236,803 / 16693.5839,102 / 17736.39
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.03 4.62 4.47 4.25
Heating Ability
Firebox Area (sq ft / m2)139 / 12.92151 / 14.03182 / 16.91180 / 16.73
Grate Area (sq ft / m2)44 / 4.0940 / 3.7244.56 / 4.1444.40 / 4.13
Evaporative Heating Surface (sq ft / m2)2439 / 226.672710 / 251.861471 / 136.711330 / 123.61
Superheating Surface (sq ft / m2)469 / 43.59509 / 47.30
Combined Heating Surface (sq ft / m2)2439 / 226.672710 / 251.861940 / 180.301839 / 170.91
Evaporative Heating Surface/Cylinder Volume217.29266.18122.31118.49
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation9020760080218436
Same as above plus superheater percentage90207600994610,798
Same as above but substitute firebox area for grate area28,49528,69040,62243,776
Power L14865592890589800
Power MT252.36343.92486.02520.61