Delaware, Lackawanna &Western 2-6-0 "Mogul" Locomotives in the USA


Class Details by Steve Llanso of Sweat House Media

Class E-1 (Locobase 5718)

Data from Angus Sinclair, Twentieth Century Locomotives (New York: Railway and Locomotive Engineering, 1904), pp.536-538. See also DL&W 3 - 1938 locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Also see [] (29 October 2003). (Thanks to Chris Hohl for his 21 August 2019 email noting the tender's water capacity.) Works numbers were 27276-27282 in 1903.

This was a series of conventional-cab Moguls built for light freight and passenger work. Slide valve travel was 5 1/2".

Many were superheated (See Locobase 5719).


Class E-10 (Locobase 16447)

Data from Roy V Wright, Locomotive Dictionary-3rd Edition (New York: Simmons-Boardman Publishing Company, 1912), p. 168. (Many thanks to Chris Hohl for his 21 August 2019 email and spreadsheet noting the entry in the Fowler Dictionary that provides the data for this entry.) Works numbers were 46145-46153

Similar in size the Baldwin Moguls of 1904 (Locobase 14459), this nonet of upstate New Yorkers probably about the same tube count (310) as that design. A key difference was the use of outside radial valve gear to actuate the valves.

All were soon superheated along with the rest of the DL&W 63" driver 2-6-0s; see Locobase 5719


Class E-11 (Locobase 14460)

Data from DL&W73 - 1938 locomotive diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. See also "Pacific Type Locomotives, Delaware, Lackawanna & Western RR" Railway and Engineering Review, Volume 53, No. 1 (5 July 1913), pp. 641-642. Works numbers were 50008-50014 in 1911.

This was the last batch of conventional-cab Moguls to go into service on the Lackawanna. They broke from the pattern established by earlier classes in being delivered with outside radial valve gear.


Class E-2, E-6, E-6a (Locobase 5721)

Data from set of DL&W locomotive diagrams at [] (29 October 2003); and DL&W 7 - 1927 Locomotive Diagrams supplied in August 2013 by Allen Stanley from his extensive Rail Data Exchange collection . Works numbers were 27283-27300 in 1903 and 39842-39843 in 1906. (Thanks to Chris Hohl for his 21 August 2019 email and spreadsheet linking the E-6s to this entry and noting the valve gear on the E-6 locomotives.)

The only camelback Moguls to enter service with the Lackawanna. Eighteen came from Schenectady in 1903, two more from Rogers in 1906. The 1927 diagram shows the 588 with Stephenson (Williams-Howe) link motion, the 589 E-6a fitted with Walschaert outside radial valve gear. By 1927, tube counts came in at several levels ranging from 296 to 314 tubes.

The class retired beginning in 1926 with the last leaving the line in 1934. None of these was superheated.


Class E-3 (Locobase 14459)

Data from DeGolyer, Volume 26, p. 298. (Thanks to Chris Hohl for his 21 August 2019 email correcting the class ID from E-8 to E-3.) Works numbers were 24131-24145 in April 1904 and 24184, 24204, and 24231 in May.

Sprinkled among the Wootten-boiler Consolidations then in production by Baldwin were the half-dozen conventional-cab Moguls built for light freight and passenger work. They essentially repeated the 1903 Schenectady engines of 1903 shown in Locobase 5718. Slide valve travel was 5 7/8" (149 mm).

This class was not superheated. Instead it was scrapped in 1926-1928.


Class E-4, E-7, E-9 (Locobase 5717)

Data from set of DL&W locomotive diagrams at [] (29 October 2003). See also DL&W 7 - 1927 Locomotive Diagrams supplied in August 2013 by Allen Stanley from his extensive Rail Data Exchange collection. (Chris Hohl's 21 August 2019 email question about the class ID led to Locobase's discovery of the 1909 locomotive.) Rogers' works numbers were 39850-39855 in 1906, Schenectady's numbers were 45533-45534 in 1908 and 46164-46165 in 1909.

Drury (1993) explains that the line's Consolidations were slow drag-freight type and the Moguls satisfied the need for something faster. Rogers delivered six in 1906 and Schenectady added a pair in 1908 and two more in 1909.

NB: Given the tube heating surface area shown in the diagram, Locobase estimates the original tube count. Never retrofitted with superheaters, the class deployed a melange of tube counts (and thus heating surface areas) ranging from 300 to 335 tubes by the time they were scrapped in the mid-1930s.


Class E-5 (Locobase 15098)

Data from DL&W 7 - 1933 Locomotive Diagrams supplied in May 2005 by Allen Stanley from his extensive Rail Data Exchange. Works numbers were 35856-35857 in 1906.

Part of a continuing series of powerful Moguls with long wheelbases, this set of seven came from Paterson, NJ. They essentially repeated the 1903 Schenectady engines of 1903 shown in Locobase 5718. Slide valve travel was 5 7/8".

Like the Schenectady Moguls shown in Locobase 5718, many were superheated to a common design (See Locobase 5719)

NB: Tube count is an estimate based on the amount of tube heating surface area remaining once the given firebox area was subtracted from the given total evaporative heating surface area.


Class E-5a, E-8a, E-10a, E-11a (Locobase 5719)

Data from set of DL&W locomotive diagrams at [] (29 October 2003) . (A 21 August 2019 email from Chris Hohl noted the slightly shorter tender of the E-5a.)

The Lackawanna superheated all of its 63"-drivered Moguls (Locobase 5718) to a common standard. The firebox was unchanged and so were the weights. The slide valve casting received an "economy chest" that contained an 8" (203 mm) diameter piston-valve core.

The two E-5a trailed a slightly smaller tender that held 6,000 US gallons (22,710 litres) of water; it weighed 120,000 lb () loaded. E-5a engine and tender wheelbase measured 2" (50.8 mm) less at 52 ft 5 1/2 in (16.00 m).


Class E-9 (Locobase 5720)

Data from set of DL&W locomotive diagrams at [] (29 October 2003) . Works numbers were 46164-46165 in May 1909.

Last pair of 57"-drivered Moguls for the Lackawanna with a slightly larger heating surface and a little more weight on the drivers.

Retirements began in 1930 and had been completed by 1937.


Class none (Locobase 3284)

Interesting camelback with a surprisingly light look to it. The anthracite-burner had the large Wooten firebox at the back of which was a full windscreen for the fireman. The center cab has a steam dome squeezed between it and the tall pipe stack and large headlight. Perhaps the relatively small cylinders and raked pilot (cow-catcher) reduce the ungainliness.

According to a compilation of Cooke locomotives by B.Rumary (25 Kingscombe, Gurney Slade, Radstock, BA3 4TH, ENGLAND) and supplied to Locobase by Allen Stanley in March 2004, works numbers were 2412-2413 (November 1898). No indication as to why there was a gap between the road numbers.

Principal Dimensions by Steve Llanso of Sweat House Media
ClassE-1E-10E-11E-2, E-6, E-6aE-3
Locobase ID5718 16,447 14,460 5721 14,459
RailroadDelaware, Lackawanna &WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &Western
CountryUSAUSAUSAUSAUSA
Whyte2-6-02-6-02-6-02-6-02-6-0
Number in Class2397206
Road Numbers550-556541-549534-540570-587, 588, 589557-562
GaugeStdStdStdStdStd
Number Built2397206
BuilderAlco-SchenectadyAlco-SchenectadyAlco-SchenectadyAlco - multiple worksBurnham, Williams & Co
Year19031909191119031904
Valve GearStephensonWalschaertWalschaertStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)15 / 4.5715 / 4.5715 / 4.5715 / 4.5715 / 4.57
Engine Wheelbase (ft / m)23.83 / 7.2623.83 / 7.2623.83 / 7.2623.83 / 7.2623.83 / 7.26
Ratio of driving wheelbase to overall engine wheebase 0.63 0.63 0.63 0.63 0.63
Overall Wheelbase (engine & tender) (ft / m)52.62 / 16.0452.62 / 16.0452.62 / 16.0451.94 / 15.8352.62 / 16.04
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)140,000 / 63,503150,500 / 68,266152,500 / 69,173144,000 / 65,317140,000 / 63,503
Engine Weight (lbs / kg)161,000 / 73,028171,500 / 77,791173,500 / 78,698165,000 / 74,843161,000 / 73,028
Tender Loaded Weight (lbs / kg)119,400 / 54,159119,400 / 54,159130,000 / 58,967120,000 / 54,431119,400 / 54,159
Total Engine and Tender Weight (lbs / kg)280,400 / 127,187290,900 / 131,950303,500 / 137,665285,000 / 129,274280,400 / 127,187
Tender Water Capacity (gals / ML)6000 / 22.736500 / 24.626500 / 24.626000 / 22.736500 / 24.62
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)10 / 9.1010 / 9.1010 / 9.1010 / 9.1010 / 9.10
Minimum weight of rail (calculated) (lb/yd / kg/m)78 / 3984 / 4285 / 42.5080 / 4078 / 39
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)63 / 160063 / 160063 / 160063 / 160063 / 1600
Boiler Pressure (psi / kPa)200 / 13.80200 / 13.80200 / 13.80200 / 13.80200 / 13.80
High Pressure Cylinders (dia x stroke) (in / mm)20.5" x 26" / 521x66020.5" x 26" / 521x66020.5" x 26" / 521x66020.5" x 26" / 521x66020.5" x 26" / 521x660
Tractive Effort (lbs / kg)29,484 / 13373.7329,484 / 13373.7329,484 / 13373.7329,484 / 13373.7329,484 / 13373.73
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.75 5.10 5.17 4.88 4.75
Heating Ability
Firebox Area (sq ft / m2)166.20 / 15.44161 / 14.96157 / 14.59187 / 17.37166 / 15.42
Grate Area (sq ft / m2)53.40 / 4.9653.40 / 4.9653 / 4.9287.60 / 8.1453 / 4.92
Evaporative Heating Surface (sq ft / m2)2342 / 217.582337 / 217.112183 / 203.732242 / 208.292336 / 217.02
Superheating Surface (sq ft / m2)
Combined Heating Surface (sq ft / m2)2342 / 217.582337 / 217.112183 / 203.732242 / 208.292336 / 217.02
Evaporative Heating Surface/Cylinder Volume235.79235.29219.78225.72235.19
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation10,68010,68010,60017,52010,600
Same as above plus superheater percentage10,68010,68010,60017,52010,600
Same as above but substitute firebox area for grate area33,24032,20031,40037,40033,200
Power L167096643627567176694
Power MT316.95291.93272.14308.51316.24

Principal Dimensions by Steve Llanso of Sweat House Media
ClassE-4, E-7, E-9E-5E-5a, E-8a, E-10a, E-11aE-9none
Locobase ID5717 15,098 5719 5720 3284
RailroadDelaware, Lackawanna &WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &Western
CountryUSAUSAUSAUSAUSA
Whyte2-6-02-6-02-6-02-6-02-6-0
Number in Class1022222
Road Numbers501-510563-564563-569, 534-549509-51061, 67
GaugeStdStdStdStdStd
Number Built10222
BuilderAlco - multiple worksAlco-RogersshopsAlco-SchenectadyCooke
Year19061906190619091898
Valve GearStephensonStephensonWalschaertStephensonStephenson
Locomotive Length and Weight
Driver Wheelbase (ft / m)15 / 4.5715 / 4.5715 / 4.5715 / 4.5714.75 / 4.50
Engine Wheelbase (ft / m)23.83 / 7.2623.83 / 7.2623.83 / 7.2623.83 / 7.2622.59 / 6.89
Ratio of driving wheelbase to overall engine wheebase 0.63 0.63 0.63 0.63 0.65
Overall Wheelbase (engine & tender) (ft / m)52.62 / 16.0452.45 / 15.9952.71 / 16.07
Axle Loading (Maximum Weight per Axle) (lbs / kg)
Weight on Drivers (lbs / kg)153,000 / 69,400140,000 / 63,503140,000 / 63,503156,500 / 70,987122,000 / 55,338
Engine Weight (lbs / kg)176,000 / 79,832161,000 / 73,028161,000 / 73,028173,500 / 78,698138,500 / 62,823
Tender Loaded Weight (lbs / kg)120,000 / 54,431119,400 / 54,159126,000 / 57,153126,500 / 57,380
Total Engine and Tender Weight (lbs / kg)296,000 / 134,263280,400 / 127,187287,000 / 130,181300,000 / 136,078
Tender Water Capacity (gals / ML)6000 / 22.736500 / 24.626500 / 24.626500 / 24.623700 / 14.02
Tender Fuel Capacity (oil/coal) (gals/tons / ML/MT)10 / 9.1010 / 9.1010 / 9.1010 / 9.108 / 7.30
Minimum weight of rail (calculated) (lb/yd / kg/m)85 / 42.5078 / 3978 / 3987 / 43.5068 / 34
Geometry Relating to Tractive Effort
Driver Diameter (in / mm)57 / 144863 / 160063 / 160057 / 144857.75 / 1468
Boiler Pressure (psi / kPa)200 / 13.80200 / 13.80200 / 13.80200 / 13.80180 / 12.40
High Pressure Cylinders (dia x stroke) (in / mm)21" x 26" / 533x66020.5" x 26" / 521x66020.5" x 26" / 521x66021" x 26" / 533x66019" x 26" / 483x660
Tractive Effort (lbs / kg)34,197 / 15511.5229,484 / 13373.7329,484 / 13373.7334,197 / 15511.5224,867 / 11279.49
Factor of Adhesion (Weight on Drivers/Tractive Effort) 4.47 4.75 4.75 4.58 4.91
Heating Ability
Firebox Area (sq ft / m2)167 / 15.51157 / 14.59157 / 14.59167 / 15.52152 / 14.13
Grate Area (sq ft / m2)53.40 / 4.9653.40 / 4.9653.40 / 4.9653.40 / 4.9680 / 7.43
Evaporative Heating Surface (sq ft / m2)2578 / 239.502305 / 214.141678 / 155.892578 / 239.591763 / 163.85
Superheating Surface (sq ft / m2)341 / 31.68
Combined Heating Surface (sq ft / m2)2578 / 239.502305 / 214.142019 / 187.572578 / 239.591763 / 163.85
Evaporative Heating Surface/Cylinder Volume247.34232.07168.94247.34206.63
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation10,68010,68010,68010,68014,400
Same as above plus superheater percentage10,68010,68012,49610,68014,400
Same as above but substitute firebox area for grate area33,40031,40036,73833,40027,360
Power L16222653311,69662225123
Power MT268.96308.63552.54262.95277.73

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