Delaware, Lackawanna & Western / Delaware, Lackawanna &Western 2-8-0 "Consolidation" Type Locomotives

Data from "The Lackawanna's New Consolidation," Railway and Locomotive Engineering, October 1899, page 430.

According to the article in the R&LE, this engine was designed and built by Master Mechanic David Brown of the D&LW. At this point, Locobase cannot establish whether this was a single trial locomotive or part of a class.

Class F - camelbacks (Locobase 5724)

Data from set of DL&W locomotive diagrams at http://www.rr-fallenflags.org/el/loco/dlw-127.html (29 October 2003). This was large roster of camelback Consolidations were delivered by several batches by different builders over a span of 8 years, but all owned the same Wootten firebox, boiler, cylinders, and other dimensions.

Schenectady and Dickson produced the first 45 in 1901-1902 (855-899). JF Webber's Dickson list shows 10 -- 1229-1238 in November 1901 to February 1902 -- with road numbers 875-884.

Schenectady followed in 1902 with a quintet (301-305) and 8 more (315-322) in 1905.

Baldwin contributed 9 in 1904 (306-314) and Rogers delivered 23 in 1906-1908 (323-346.

Retirements began in 1923 and continued until 1935. None of these camelbacks were superheated.

Class F-18 (Locobase 5722)

Data from set of DL&W locomotive diagrams at http://www.rr-fallenflags.org/el/loco/dlw-127.html (29 October 2003). Almost a decade after the first conventional-cab 2-8-0s, Alco was still delivering virtually identical Consolidations. The chief differences were Walschaerts valve motion (instead of Stephenson), 1/8"-shorter boiler tubes, and a larger tender.

Most of these were superheated to a common design adopted for all conventional-cab 2-8-0s. In that version, the first retirements began in 1940 and continued until 1953.

Class F-4/F-5 (Locobase 1342)

Data from set of DL&W locomotive diagrams at http://www.rr-fallenflags.org/el/loco/dlw-127.html (29 October 2003) showing a single-cab Consolidation with a "semi-wide" firebox. Of the 40 locomotives, 20 were built at Schenectady and 20 at Dickson. JF Webber's list shows 10 -- 1257-1266 in August 1901 -- with road numbers 760-769.

Several other classes had similar power numbers.

Retirements began in 1926 and stretched over the next 9 years.

Class F-5a/F-8a/F-14a/F-16a-F-18a (Locobase 5723)

Data from set of DL&W locomotive diagrams at http://www.rr-fallenflags.org/el/loco/dlw-127.html (29 October 2003). Virtually all of the single-cab Consolidations were superheated to a common design. The firebox was unchanged, but the boiler lost a few tubes to make room for the superheater flues.

Class F19 (Locobase 9636)

Data from "Comparative Tests of Freight Locomotives", Railway Age Gazette, 4 October 1912, pp. 643-644.

Follow-ons to the large 2-8-0 class that entered service in 1901, these were built by Schenectady; these had builders numbers 49983-49997. Like many of their type, these were originally delivered with saturated boilers stuffed with tubes. Tested against the newly purchased Mikados, the F-19s came up short. They burned more coal per thousand ton-miles (156 lb vs 125 lb) on heavy grades and averaged 29.1% more coal consumed during all of the tests.

Drury (1993) notes that these were designed for draft freight service up the Dansville Hill between Groveland and Wayland, NY.

The class left service in 1937-1940.

Data from set of DL&W locomotive diagrams at http://www.rr-fallenflags.org/el/loco/dlw-127.html (29 October 2003) The diagram shows a conventional single cab and fat boiler. Also notes that these were fitted with "economy chests, piston" valves, possibly a reference to a slide-to-piston conversion kit? These engines were later superheated; see Locobase 1343.

Class F19a (Locobase 1343)

Data from set of DL&W locomotive diagrams at http://www.rr-fallenflags.org/el/loco/dlw-127.html (29 October 2003)

These had a conventional single cab and fat boiler with the most heating surface of any DL & W Consolidation. The diagram also notes that these were fitted with "economy chests, piston" valves, possibly a reference to a slide-to-piston conversion kit?

NB: The diagrams consistently show the superheater area as 510 sq ft, but that figure is at odds with other North American locomotives with the Type A superheater that had the same number of flues and elements as did the 385s.

Specifications
ClassF - camelbacksF-18F-4/F-5F-5a/F-8a/F-14a/F-16a-F-18aF19F19a
Locobase ID9514572457221342572396361343
RailroadDelaware, Lackawanna & WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &Western
Whyte2-8-02-8-02-8-02-8-02-8-02-8-02-8-0
Road Numbers888350-373740-779385-399385-399
GaugeStdStdStdStdStdStdStd
BuilderDL&WseveralAlco-SchenectadyAlcoshopsAlco-SchenectadyAlco-Schenectady
Year1899190119101901191519111920
Valve GearStephensonStephensonWalschaertStephensonWalschaertWalschaertWalschaert
Locomotive Length and Weight
Driver Wheelbase15.50'15.83'15.83'15.83'15.83'17.50'17.50'
Engine Wheelbase23.96'24.67'24.67'24.67'24.67'23.42'23.42'
Ratio of driving wheelbase to overall engine wheebase 0.65 0.64 0.64 0.64 0.64 0.75 0.75
Overall Wheelbase (engine & tender)57.58'53.39'53.58'53.39'53.58'60.92'60.92'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers175500 lbs166000 lbs169500 lbs157500 lbs169500 lbs210500 lbs213000 lbs
Engine Weight197650 lbs186000 lbs190000 lbs178000 lbs190000 lbs236000 lbs239000 lbs
Tender Light Weight90000 lbs120000 lbs124600 lbs120000 lbs129600 lbs157300 lbs157300 lbs
Total Engine and Tender Weight287650 lbs306000 lbs314600 lbs298000 lbs319600 lbs393300 lbs396300 lbs
Tender Water Capacity4500 gals6000 gals6500 gals6000 gals6500 gals8000 gals8000 gals
Tender Fuel Capacity (oil/coal)10 tons10 tons10 tons10 tons14 tons14 tons
Minimum weight per yard of rail on which locomotive could run73.12 lb rail69.17 lb rail71 lb rail65.62 lb rail70.62 lb rail87.71 lb rail88.75 lb rail
Geometry Relating to Tractive Effort
Driver Diameter57"57"57"57"57"57"57"
Boiler Pressure200 psi200 psi200 psi200 psi200 psi200 psi200 psi
Cylinders (dia x stroke)22" x 30"21" x 26"21" x 26"21" x 26"21" x 26"26" x 30"26" x 30"
Tractive Effort43305 lbs34197 lbs34197 lbs34197 lbs34197 lbs60484 lbs60484 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.05 4.85 4.96 4.61 4.96 3.48 3.52
Heating Ability
Firebox Area211 sq. ft223 sq. ft173 sq. ft157 sq. ft157 sq. ft202 sq. ft207 sq. ft
Grate Area95 sq. ft95 sq. ft53.40 sq. ft53 sq. ft53 sq. ft58.20 sq. ft58 sq. ft
Evaporative Heating Surface3002278927472732190737153077
Superheating Surface390610
Combined Heating Surface3002278927472732229737153687
Evaporative Heating Surface/Cylinder Volume227.44267.58263.55262.12182.96201.52166.91
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation19000190001068010600106001164011600
Same as above plus superheater percentage1900019000106801060012399.741164013519.18
Same as above but substitute firebox area for grate area4220044600346003140036731.304040048249.47
Power L15840.047116.6565846411.1811305.704869.809896.26
Power MT293.45378.06342.54358.96588.19204.01409.72

Photos

Reference

Credits

Introduction and specifications provided by Steve Llanso of Sweat House Media.

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