Delaware, Lackawanna &Western 2-8-2 "Mikado" Type Locomotives

Introduction

The Delaware, Lackawanna & Western Railroad mail line ran from Buffalo, NY through Binghamton, NY on to Scranton, PA and the to a terminated in Hoboken, NJ with rail and ferry connection to New York City. The railroad had major branches at Binghamton, NY and Scranton, PA. At Binghamton there was a branch to Syracuse, NY and onto Oswego, NY, and also at Binghamton there was a branch to Utica, NY and at Scranton there was a branch to Sunbury, PA.

The Delaware, Lackawanna & Western, a relatively small railroad purchased a total of 112 "Mikado" type locomotives all with 63" diameter drivers. The early sixty-two had 28" x 30" cylinders and exerted a respectable 60,000+ pounds of tractive effort. The last fifty delivered in 1923 and 1924, were what may be described as a fatter versions of the USRA "Mikado-Heavy". With a similar sized boiler and with 28" x 27" cylinders and almost nineteen tons more weight than the USRA design these locomotives were under-boilered. However, since this class was used primarily in helper and mine run service, this may not have been too significant.

The first "Mikado" type locomotives on the DL&W arrives in 1912 with the delivery from the American Locomotive of the first batch of twenty-seven it would deliver during 1912 and 1913. They were designated as Class L-1 and L-2 and given road numbers 1201 through 1227. These locomotives had 63" diameter drivers, 28" x 30" cylinders, a 190 psi boiler pressure, they exerted 60,293 pounds of tractive effort and each weighed 312,000 pounds. The firebox was 260 square feet, the evaporative heating surface was 4,885 square feet and with the superheater the combined heating surface was 5,950 square feet.

In 1916 and 1917, ALCO delivered twenty-five more "Mikados" which were designated as Class L-3/L-4 and assigned road numbers 1228 through 1252. In 1920, ten more 2-8-2s were delivered from ALCO which were designated as Class L-5 and assigned road numbers 1253 through 1262. These thirty-five locomotives had 63" diameter drivers, 28" x 30" cylinders, a 200 psi boiler pressure, they exerted 63,467 pounds of tractive effort and each weighed 321,000 pounds. The firebox was 260 square feet, the evaporative heating surface was 4,205 square feet and with the superheater the combined heating surface was 5,270 square feet.

In 1923, twenty-five more 2-8-2s came from ALCO and were designated as Class L-6 and given road numbers 2101 through 2124. In 1924, fifteen more locomotive of a similar design were delivered from ALCO and were designated as Class L-6a and assigned road numbers 2126 through 2140. These forty locomotives had 63" diameter drivers, 28" x 32" cylinders, a 200 psi boiler pressure, they exerted 67,698 pounds of tractive effort and each weighed 356,500 pounds. The firebox was 320 square feet, the evaporative heating surface was 4,414 square feet and with the superheater the combined heating surface was 5,680 square feet.

The last group of "Mikados" was delivered in 1924 and it was designated as Class L-7 with road numbers 2141 through 2150 assigned. These locomotives had 63" diameter drivers, 28" x 32" cylinders, a 200 psi boiler pressure, they exerted 67,698 pounds of tractive effort and each weighed 362,500 pounds. The firebox was 350 square feet, the evaporative heating surface was 4,423 square feet and with the superheater the combined heating surface was 5,535 square feet.

There are no surviving DL&W 2-8-2 "Mikado" type locomotives.

Roster by Richard Duley

ClassQty.Road NumbersYear BuiltBuilderNotes
L-1/L-2271201-12271912-1913ALCO1
L-3/L-4251228-12521916-1917ALCO2
L-5101253-12621920ALCO3
L-6252101-21251923ALCO4
L-6a152126-21401924ALCO5
L-7102141-21501924ALCO6
Notes:
  1. Numbers 1201-1222 rebuilt to 0-8-0 and assigned numbers in the 201-260 series. The other five were scrapped between 1936 and 1948.
  2. Numbers 1228-1252 scrapped between 1946 and 1953
  3. Numbers 1253-1262 scrapped between 1946 and 1953.
  4. Numbers 2101-2125. Number 2101 was sold to the Alton & Southern in the 1940s. The others scrapped between 1946 and 1952.
  5. Numbers 2136-2140 scrapped between 1946 and 1950.
  6. Numbers 2141-2150 scrapped between 1946 and 1950.

Class Details by Steve Llanso

Class L-1/L-2 (Locobase 5733)

Data from the Lackawanna's diagrams as posted on http://www.rr-fallenflags.org/el/loco/dlw-127.html (29 October 2003). See also "Comparative Tests of Freight Locomotives", Railway Age Gazette, 4 October 1912, pp. 643-644 and "Consolidation Locomotives for the Wheeling & Lake Erie," Railway and Locomotive Engineering, Vol 26, No 12 (December 1913), pp. 451-452. Works numbers were 51355-51369 in 1912 (L-1) and 53146-53157 in 1913.

Firebox heating surface included 30 sq ft of arch tubes. From the start, Lackawanna Mikes had big piston valves measuring 16" (406 mm) in diameter. Over time the class had slight variations in the tube count, but most retained 292 2" tubes.

These were the first Mikados on the Lackawanna and, as Drury (1993) notes, they represented a big increase in power at speed over the road's Consolidations. The R&LE article summarized the intent in the design by noting that the boiler was described as a 100% vessel guaranteed "to furnish a constant supply of steam for any sustained speed the locomotive cylinders are capable of making."

Drury notes that the engineers disliked the then-new screw reverser, but that the firemen hated the larger and still hand-fired grate. Introduction of mechanical stoking and power reverse relieved the two problems.

In the late 1920s, the first 22 in the class were converted to 0-8-0 heavy switchers by deleting both auxiliary trucks. The other 5 were retired in a long period between 1936 and 1948.

Class L-3/L-4/L-5 (Locobase 5734)

Data from the Lackawanna's diagrams as posted on http://www.rr-fallenflags.org/el/loco/dlw-127.html (29 October 2003). Works numbers were 55927-55936 (L-3) in 1916, 60240-60254 (L-4) in 1918, and 61828-61837 in 1920.

Firebox heating surface included 30 sq ft (2.8 sq m) of arch tubes. Piston valves measured 16" (406 mm) in diameter in the 1916 & 1918 batches, but 14" (356 mm) in 1252-1262, delivered in 1920.

Interesting modification of Lackawanna's first Mikado (Locobase 5733) in which the grate stays the same, but the boiler is three feet (914 mm) shorter. These were strong locomotives for their size and obviously well-suited to their service as they were retired at the end of steam in 1946 to 1953.

Class L-6/L-6a (Locobase 5732)

Although the Locomotive Cyclopedia of 1930 had complete data, Locobase also went with the Lackawanna's diagrams as posted on http://www.rr-fallenflags.org/el/loco/dlw-127.html (29 October 2003). One big difference: The Cyclopedia credited the engines with 30 5 1/2" flues rather than the 50 5 3/8" shown on the diagrams. Works #63581-63605 were in 1923, 64039-64048 and 64065-64069 in 1924.

Firebox heating surface included 35 sq ft (3.25 sq m) of arch tubes and the piston valves measured 14" (356 mm) in diameter. This batch of Mikescame after the USRA Mountains had been developed, but were somewhat bigger than that design. Locobase 12 has another ten from Brooks with slightly different dimensions.

Drury (1993) comments about all 50: "They were about as much locomotive as could be put on a 2-8-2 running gear with 63" drivers". He also notes that when the DL&W was done with them, seven went to railroads such as the Montour, Alton & Southern, and the Chicago & Illinois Midland.

Class L-7 (Locobase 12)

Although the Locomotive Cyclopedia of 1930 had complete data, Locobase chose the Lackawanna's diagrams as posted on http://www.rr-fallenflags.org/el/loco/dlw-127.html (29 October 2003). Works numbers were 65408-65417 in 1924.

These ten were built at Brooks in 1924 and followed an order for 40 from Schenectady (see Locobase 5730). One big difference: The Cyclopedia credited the engines with 30 5 1/2" flues rather than the 50 5 3/8" shown on the diagrams. The diagrams show that these had 14" (356 mm) piston valves.

Firebox heating surface included 35 sq ft (3.25 sq m) in four arch tubes. See 5732 for discussion of all 50 locomotives.


Specifications by Steve Llanso
ClassL-1/L-2L-3/L-4/L-5L-6/L-6aL-7
Locobase ID5733 5734 5732 12
RailroadDelaware, Lackawanna &WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &WesternDelaware, Lackawanna &Western
Whyte2-8-22-8-22-8-22-8-2
Road Numbers1201-12271228-12622101-21402141-2150
GaugeStdStdStdStd
BuilderAlco-SchenectadyAlco-SchenectadyAlco-SchenectadyAlco-Brooks
Year1912191619221924
Valve GearWalschaertBakerBakerWalschaert
Locomotive Length and Weight
Driver Wheelbase17'17'17'17'
Engine Wheelbase35.17'35.17'37.30'37.30'
Ratio of driving wheelbase to overall engine wheebase 0.48 0.48 0.46 0.46
Overall Wheelbase (engine & tender)67.29'67.43'73.25'73.25'
Axle Loading (Maximum Weight per Axle)
Weight on Drivers236500 lbs254500 lbs271500 lbs276500 lbs
Engine Weight312000 lbs321000 lbs356500 lbs362500 lbs
Tender Light Weight161500 lbs163800 lbs217600 lbs217600 lbs
Total Engine and Tender Weight473500 lbs484800 lbs574100 lbs580100 lbs
Tender Water Capacity8000 gals9000 gals12000 gals12000 gals
Tender Fuel Capacity (oil/coal)15 tons15 tons14 tons14 tons
Minimum weight of rail (calculated) on which locomotive could run99 lb/yard106 lb/yard113 lb/yard115 lb/yard
Geometry Relating to Tractive Effort
Driver Diameter63"63"63"63"
Boiler Pressure190 psi200 psi200 psi200 psi
Cylinders (dia x stroke)28" x 30"28" x 30"28" x 32"28" x 32"
Tractive Effort60293 lbs63467 lbs67698 lbs67698 lbs
Factor of Adhesion (Weight on Drivers/Tractive Effort) 3.92 4.01 4.01 4.08
Heating Ability
Firebox Area260 sq. ft260 sq. ft320 sq. ft350 sq. ft
Grate Area63 sq. ft63 sq. ft70.40 sq. ft70.40 sq. ft
Evaporative Heating Surface4885 sq. ft4205 sq. ft4414 sq. ft4423 sq. ft
Superheating Surface1065 sq. ft1065 sq. ft1266 sq. ft1112 sq. ft
Combined Heating Surface5950 sq. ft5270 sq. ft5680 sq. ft5535 sq. ft
Evaporative Heating Surface/Cylinder Volume228.48196.68193.55193.94
Computations Relating to Power Output (More Information)
Robert LeMassena's Power Computation11970126001408014080
Same as above plus superheater percentage14125151201717816896
Same as above but substitute firebox area for grate area58292624007808084000
Power L114715148221603014900
Power MT548.68513.59520.66475.21

Photos

Reference

Credits

Introduction and roster provided by Richard Duley. Class details and specifications provided by Steve Llanso of Sweat House Media.