Denver & Salt Lake / Denver, Northwestern & Pacific / Drake & Stratton Limited 2-8-0 "Consolidation" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class 42 (Locobase 11435)

Data from "Locomotive Building," The Railroad Gazette, Vol XLI, No 14 (5 October 1906), p. 88.

This railway was renamed Denver & Salt Lake in 1912.


Class 44 (Locobase 11470)

Data from "Locomotive Building," The Railway Age Gazette, Vol XLVIII, No 13 (1 April 1910), p. 923.

Adding to the Consolidation stud that had already been assembled (see Locobase 11435), this batch adopted Walschaert outside radial valve gear. This railway was renamed Denver & Salt Lake in 1912.


Class C2 (Locobase 12803)

Data from D&SL 1 -1932 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange.


Class E M Cummings (Locobase 12053)

Data from Baldwin Locomotive Works Specification for Engines as digitized by the DeGolyer Library of Southern Methodist University Volume 18, p 114. Works numbers were 13058 in November 1892 and 13275 in March 1893.

D & S was a contracting firm that bought this pair of small, low-drivered Consolidations.

They sold the 23 to the Charleston, Clendennin & Sutton of West Virginia. There followed a string of sales for the 23: CC & S to the Coal & Coke Railroad in May 1903 as their #9. The C & C operated the engine for more than 15 years before selling the 9 to Middle Creek Railroad in 1919, where it was renumbered 4.

The 24 was sold to the McDonald & Onderdonk, New York City contractors. Some time later, M & O sold the engine to the locomotive rebuilder/reseller Birmingham Rail & Locomotive. BR & L rebuilt the 24 with 20" cylinders and sold the locomotive to the Davidson Ingram Lumber Company of Houston, Tex. The DILC sold the engine to Benford Lumber inVirginia and that company later sold it to the Mardez Lumber.

Principal Dimensions by Steve Llanso of Sweat House Media
Class4244C2E M Cummings
Locobase ID11,435 11,470 12,803 12,053
RailroadDenver, Northwestern & Pacific (D&SL)Denver, Northwestern & Pacific (D&SL)Denver & Salt LakeDrake & Stratton Limited
CountryUSAUSAUSAUSA
Whyte2-8-02-8-02-8-02-8-0
Number in Class212122
Road Numbers112-12323-24
GaugeStdStdStdStd
Number Built212122
BuilderAlco-SchenectadyAlco-SchenectadyAlco-SchenectadyBurnham, Williams & Co
Year1906191019101892
Valve GearStephensonWalschaertWalschaertStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)15.67 / 4.8013 / 3.96
Engine Wheelbase (ft / m)32.92 / 10.0320.17 / 6.15
Ratio of driving wheelbase to overall engine wheebase 0.48 0.64
Overall Wheelbase (engine & tender) (ft / m) / 20.63
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)186,000 / 84,368195,000 / 88,451195,000 / 88,45180,000 / 36,287
Engine Weight (lbs / kg)210,000 / 95,255219,000 / 99,337219,000 / 99,33792,000 / 41,731
Tender Loaded Weight (lbs / kg)157,000 / 71,214
Total Engine and Tender Weight (lbs / kg)376,000 / 170,551
Tender Water Capacity (gals / ML)8000 / 30.308000 / 30.308000 / 30.304000 / 15.15
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)12 / 10.9012 / 10.9015 / 13.60
Minimum weight of rail (calculated) (lb/yd / kg/m)78 / 3981 / 40.5081 / 40.5033 / 16.50
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)56 / 142255 / 139755 / 139744 / 1118
Boiler Pressure (psi / kPa)210 / 14.50210 / 14.50210 / 14.50160 / 11
High Pressure Cylinders (dia x stroke) (in / mm)22" x 28" / 559x71122" x 28" / 559x71122" x 28" / 559x71117" x 24" / 432x610
Tractive Effort (lbs / kg)43,197 / 19593.8543,982 / 19949.9243,982 / 19949.9221,439 / 9724.58
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.31 4.43 4.43 3.73
Heating Ability
Firebox Area (sq ft / m2)213 / 19.80200 / 18.59113 / 10.50
Grate Area (sq ft / m2)54.20 / 5.0454.20 / 5.0454.20 / 5.0419.60 / 1.82
Evaporative Heating Surface (sq ft / m2)3505 / 325.743538 / 328.813541 / 329.091153 / 107.16
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)3505 / 325.743538 / 328.813541 / 329.091153 / 107.16
Evaporative Heating Surface/Cylinder Volume284.52287.20287.44182.87
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation11,38211,38211,3823136
Same as above plus superheater percentage11,38211,38211,3823136
Same as above but substitute firebox area for grate area44,73042,00018,080
Power L1719370963197
Power MT325.29320.90352.41

All material Copyright © SteamLocomotive.com
Wes Barris