Duluth & Iron Range / Duluth, Missabe & Northern 2-8-0 "Consolidation" Locomotives of the USA


Class Details by Steve Llanso of Sweat House Media

Class C-2 (Locobase 12515)

Data from "#175: New Engines for the DM & N Ry", Brotherhood of Locomotive Firemen and Enginemen's Magazine, Volume 37, No 9 (September 1904), p. 405

Similar to the Pittsburgh Junction engines built by Pittsburgh and shown in Locobase 2022, this design had a relatively large boiler and cylinder volume for a Consolidation of tis day.

Steadily increasing iron-ore traffic demands on the railroad eventually rendered these engines too small for the road and the DM & N sold them in 1919.


Class C-3 (Locobase 7285)

See data from DM&IR 6 -1951 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

These Consolidations were typical of their time in being delivered with saturated boilers. And they betrayed no pretensions about offering power at speed -- they were drag-freight through and through. After the addition of a modest amount of superheat, the design was pretty well unchanged throughout the class's long career.

Retirements began in 1920 with 4 locomotives -- 320, 322, 323, 328 -- being sold. 344-45 were sold in 1927 followed by 321 & 326 in 1928 and 329 & 337 in 1929.


Class K (Locobase 11442)

See data from DM&IR 6 -1951 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection. 25465-25467, 25509 in April 1905; 25783, 25805, 25873-25874, 25885 in June; 27722, 27738-27740, 27755, 27773 in March 1906.

At the same time the DM & N were taking delivery of Pittsburgh-built Consolidations (see Locobase 7285), the Iron Range was receiving its own clutch of Baldwin 2-8-0s. Similar in many respects, the two classes had detail differences. See Locobase 12950 for a quartet of similar locomotives with one big difference.

The 1906 specifications included notes pointing out the maximum grade of 137 ft to the mile (2.6%) and curve radii of 7 degrees on the mainline and 18 degrees on switches.

The class was later superheated; see Locobase 7286.


Class K (Locobase 12950)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 32, p. 101. Works numbers were 33308-33311 in April 1909; 34740-34745, 34813-34814, 34841-34844 in June 1910.

The 1907 K-class Consolidations produced for the D & IR carried a significantly changed boiler. In place of the 2 1/4"-diameter tubes of the earlier Ks (Locobase 11442), the 209 and later used 2" tubes. Possibly the builder (or railroad) expected the change to improve water circulation.

When this group was superheated, it was dubbed K-1; see Locobase 7287.


Class K - superheated (Locobase 7286)

See data from DM&IR 6 -1951 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

Locobase 11442 describes this relatively numerous class of Consolidations when they were delivered . When this class was superheated, the longer distance between tube sheets increased the superheater area and hence the amount of heating surface devoted to superheating. The engines had 15" piston valves.

Both batches were quite satisfactory and served the successor DM & IR until diesels replaced all steam.


Class K1 - superheated (Locobase 7287)

See data from DM&IR 6 -1951 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Raildata collection.

When the Iron Range returned to Baldwin in 1907 and 1909 for another set of Consolidations to supplement the Ks they'd bought in 1905-1906 (Locobase 7286), they specified smaller-diameter tubes (Locobase 12950).

When the railroad superheated those boilers, they installed 2 fewer flues. Because of the smaller boiler, however, the superheater ratio of all heating surfaces remained almost exactly the same. Cylinder volume increased, however, when the railroad fitted 24"-diameter cylinders to the upgrades.

As with all DM & IR 2-8-0s, many of this class worked to the end of steam on the railroad.

Specifications by Steve Llanso of Sweat House Media
ClassC-2C-3KKK - superheated
Locobase ID12515 7285 11442 12950 7286
RailroadDuluth, Missabe & Northern (DM&IR)Duluth, Missabe & Northern (DM&IR)Duluth & Iron Range (DM&IR)Duluth & Iron Range (DM&IR)Duluth & Iron Range (DM&IR)
CountryUSAUSAUSAUSAUSA
Whyte2-8-02-8-02-8-02-8-02-8-0
Number in Class62218422
Road Numbers313-318319-35090-98, 200-208/ 190-198, 1200-1208209-22490-98, 200-208/ 190-198, 1200-1208
GaugeStdStdStdStdStd
Number Built62218422
BuilderPittsburghAlco-PittsburghBurnham, Williams & CoBurnham, Williams & CoD&IR
Year1904190519051909
Valve GearStephensonStephensonBakerWalschaertBaker
Locomotive Length and Weight
Driver Wheelbase14'15.50'15.17'16.17'15.17'
Engine Wheelbase22.08'24'25.08'25.08'25.08'
Ratio of driving wheelbase to overall engine wheebase 0.63 0.65 0.60 0.64 0.60
Overall Wheelbase (engine & tender)52.45'58.54'55.21'55.21'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers164000 lbs182300 lbs171000 lbs175000 lbs194450 lbs
Engine Weight180000 lbs204800 lbs194000 lbs198000 lbs214650 lbs
Tender Light Weight97000 lbs140500 lbs120000 lbs120000 lbs137400 lbs
Total Engine and Tender Weight277000 lbs345300 lbs314000 lbs318000 lbs352050 lbs
Tender Water Capacity5000 gals8000 gals6000 gals7000 gals6450 gals
Tender Fuel Capacity (oil/coal)8 tons12 tons tons tons14 tons
Minimum weight of rail (calculated)68 lb/yard76 lb/yard71 lb/yard73 lb/yard81 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter56"56"54"54"55"
Boiler Pressure165 psi190 psi200 psi200 psi200 psi
Cylinders (dia x stroke)22" x 28"23" x 28"22" x 28"22" x 28"24" x 28"
Tractive Effort33941 lbs42717 lbs42664 lbs42664 lbs49850 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.83 4.27 4.01 4.10 3.90
Heating Ability
Firebox Area165.50 sq. ft196 sq. ft200 sq. ft158 sq. ft200 sq. ft
Grate Area35.50 sq. ft48.20 sq. ft49.50 sq. ft49.50 sq. ft49.50 sq. ft
Evaporative Heating Surface2551 sq. ft2168 sq. ft3162 sq. ft2843 sq. ft2313 sq. ft
Superheating Surface430 sq. ft609 sq. ft
Combined Heating Surface2551 sq. ft2598 sq. ft3162 sq. ft2843 sq. ft2922 sq. ft
Evaporative Heating Surface/Cylinder Volume207.08161.02256.67230.78157.77
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation58589158990099009900
Same as above plus superheater percentage5858107159900990011979
Same as above but substitute firebox area for grate area2730843571400003160048400
Power L1422392436081530810997
Power MT227.08447.12313.60267.48498.72

Specifications by Steve Llanso of Sweat House Media
ClassK1 - superheated
Locobase ID7287
RailroadDuluth & Iron Range (DM&IR)
CountryUSA
Whyte2-8-0
Number in Class16
Road Numbers209-224 / 1209-1224
GaugeStd
Number Built
BuilderD&IR
Year
Valve GearWalschaert
Locomotive Length and Weight
Driver Wheelbase15.17'
Engine Wheelbase25.08'
Ratio of driving wheelbase to overall engine wheebase 0.60
Overall Wheelbase (engine & tender)55.21'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers194450 lbs
Engine Weight214650 lbs
Tender Light Weight137400 lbs
Total Engine and Tender Weight352050 lbs
Tender Water Capacity6550 gals
Tender Fuel Capacity (oil/coal)14 tons
Minimum weight of rail (calculated)81 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter55"
Boiler Pressure200 psi
Cylinders (dia x stroke)24" x 28"
Tractive Effort49850 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.90
Heating Ability
Firebox Area200 sq. ft
Grate Area49.50 sq. ft
Evaporative Heating Surface2134 sq. ft
Superheating Surface570 sq. ft
Combined Heating Surface2704 sq. ft
Evaporative Heating Surface/Cylinder Volume145.56
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation9900
Same as above plus superheater percentage11979
Same as above but substitute firebox area for grate area48400
Power L110334
Power MT468.66

Photos

Reference


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