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Norfolk and Western Y3 class

(Redirected from Norfolk and Western Class Y3a)

The Norfolk and Western Y3 Class was a class of 2-8-8-2 "Mallet" articulated steam locomotives with a total of 80 locomotives built for the Norfolk and Western Railway between 1919 and 1923.

Norfolk and Western Y3 Class
Norfolk and Western Y3 No. 2040 pulling a coal train at a Bluefield, West Virginia yard in April 1921
Type and origin
References:[1][2][3]
Power typeSteam
BuilderAmerican Locomotive Company, Baldwin Locomotive Works
Build date1919-1923
Specifications
Configuration:
​
 • Whyte2-8-8-2
 • UIC(1′D)D1′ hv4
Gauge4 ft 8+1⁄2 in (1,435 mm)
Leading dia.30 in (760 mm)
Driver dia.57 in (1,400 mm)
Trailing dia.30 in (760 mm)
Tender wheels33 in (840 mm)
Wheelbase67 ft 4 in (20.52 m) ​
 • incl. tender93 ft 3 in (28.42 m)
Length113 ft 3 in (34.52 m)
Width11 ft 3 in (3.43 m)
Height15 ft 8+5⁄8 in (4.79 m)
Adhesive weight478,000 lb (217,000 kg)
Loco weight531,000 lb (241,000 kg)
Tender weight209,100 lb (94,800 kg)
Total weight740,100 lb (335,700 kg)
Fuel typeCoal
Fuel capacity30 t (30 long tons; 33 short tons)
Water cap.22,000 US gal (83,000 L; 18,000 imp gal)
Firebox:​
 • Grate area96 sq ft (8.9 m2)
Boiler:
​
 • TypeStraight Top
 • Diameter98 in (2,500 mm)
 • Small tubes2+1⁄4 in (57 mm)
 • Large tubes5+1⁄2 in (140 mm)
Boiler pressure270 psi (1.862 MPa)
Heating surface:​
 • Firebox435 sq ft (40.4 m2)
 • Tubes3,860 sq ft (359 m2)
 • Flues1,825 sq ft (169.5 m2)
 • Total surface6,120 sq ft (569 m2)
Superheater:
​
 • Heating area145 sq ft (13.5 m2)
CylindersFour: two low-pressure (front), two high-pressure (rear)
High-pressure cylinder25 in × 32 in (640 mm × 810 mm)
Low-pressure cylinder39 in × 32 in (990 mm × 810 mm)
Valve gearBaker
Valve typePiston
Loco brake6ET[4]
Performance figures
Tractive effort(Simple: 136,985 lbf (609.3 kN)) (Compound: 114,154 lbf (507.8 kN))[5]
Career
OperatorsNorfolk and Western Railway
Virginian Railway
Pennsylvania Railroad
Santa Fe Railroad
Union Pacific Railroad
ClassY3
Y3a
VGN USE
PRR HH1
Number in class80
NumbersN&W 2000-2079
VGN 736-742
PRR 373-378
Santa Fe 1790-1797
UP 3670-3674
Retired1956-1959
DispositionOne Y3a preserved, remainder scrapped

History

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Development

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In March 1918, the Norfolk and Western Railway (N&W), which had been experimenting with Mallet locomotives to satisfy their growing mainline coal traffic over the Blue Ridge Mountains, introduced Y2 class 2-8-8-2 No. 1700, which was constructed at the Railway's shops in Roanoke, Virginia.[6][7] When No. 1700 was placed into service, it was quickly deemed a success, being able to produce 135,600 lbf (603.18 kN) of tractive effort with simple expansion, and 104,300 lbf (463.95 kN) with compound expansion, but the locomotive's flawed boiler and firebox design prevented it from producing enough required steam.[7][8]

During this time, the United States Railroad Administration (USRA), which was created to control and standardize North American railroads during World War I, assigned the N&W, the Virginian Railway, and the Chesapeake and Ohio Railway (C&O) to their Pocahontas Region, with N&W president Nicholas D. Mahler serving as the regional manager.[8] The USRA’s mechanical engineering committee, which included two staff members from the N&W's engineering team, used the N&W's Y2 prototype as the basis for the USRA's standard 2-8-8-2 design, with the boiler and firebox problems being solved.[8]

Construction and design

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See also: USRA 2-8-8-2

The USRA 2-8-8-2's were designed with 25-by-32-inch (640 mm × 810 mm) high-pressure cylinders, 36-by-32-inch (910 mm × 810 mm) low-pressure cylinders, 57-inch (1,400 mm) diameter driving wheels, and a working boiler pressure of 240 psi (1.7 MPa), and they were able to generate a tractive effort of 106,000 lbf (471.51 kN) with compound expansion.[1][2][9] A Mellin-type by-pass and intercepting control valve was used to transition the locomotive between simple and compound operations.[9] Other features the USRA design came with included the Type A Schmidt Superheater, the N&W-style short frame Baker valve gear, and smokebox-mounted air pumps.[9][5]

Their tenders originally carried 16 short tons (32,000 lb) of coal and 12,000 US gallons (45,000 L) of water.[2] The N&W received forty-five locomotives (Nos. 2000-2044) of the USRA design in February, April, and May of 1919 from the American Locomotive Company's (ALCO) Schenectady Works, and the railway classified them as Y3's.[1][3][a] Five more Y3's (Nos. 2045-2049) were delivered from the Baldwin Locomotive Works in August and September that same year.[1][3] While the N&W was also allowed to continue ordering 1700 series Y2 class locomotives, the N&W was satisfied with the Y3's superior performance, since they were able to travel with more reliable counterbalancing.[10][11]

Between March and June of 1923, three years the N&W was released from USRA control, the N&W decided to order thirty copies of the USRA 2-8-8-2's from ALCO's Richmond, Virginia Works, and they were classified as Y3a's (Nos. 2050-2079).[1][12] Towards the end of the 1920s, the N&W began rebuilding and modifying all their Y3's and Y3a's; their air pumps were moved to the right ride of the boiler; they were equipped with a Worthington BL feedwater heater on the left side; and their boiler pressure was raised to 270 psi (1.9 MPa), resulting in their tractive effort being boosted to 136,985 lbf (609.34 kN) with simple expansion and 114,154 lbf (507.78 kN) with compound expansion.[5] Their tenders were replaced with larger ones that carried 30 short tons (60,000 lb) of coal and 22,000 US gallons (83,000 L) of water.[5]

Revenue service and retirement

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N&W Y3a No. 2063 pulling a coal train tender-first in Gilliam, West Virginia

When the Y3's were first placed into service in 1919, they were assigned alongside the Y2's in pulling the N&W's heavy coal trains over their steep grades.[11] Throughout the 1920s and 1930s, the Y3's and Y3a's were assigned in general freight service on all the N&W's mainlines and branch lines.[5] Some Y3's were also used alongside the Y2's as switchers at their coal classification yards, such as the East Portsmouth, Ohio yard.[13] One Y3, No. 2006, was modified with a booster called a "Bethlehem Auxiliary Locomotive", which consisted of two powered trucks beneath the tender, and it increased the locomotive's tractive effort by 34,500 lbf (153.46 kN), allowing for more efficient switching maneuvers.[14]

Towards their final years in service, the Y3's replaced the Z1 class 2-6-6-2's in pulling 10,000-short-ton (20,000,000 lb) coal trains from Crewe to Roanoke.[5][15] In June 1956, No. 2003 became the first Y3 to be retired from the N&W and sold for scrap, and within the next two years, the rest of the Y3's were also withdrawn from service, as the N&W began to dieselize their roster.[3][16] Most of the Y3a's followed suit in 1958 and 1959.[3][16]

Usage on other railroads

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During World War II, the N&W sold several of their surplus steam locomotives, including seventeen Y2's, nineteen Y3's, and all the K3 class 4-8-2's, to other railroads in need of extra motive power to help assist the wartime shipments.[5][17][18] In particular, six Y3's were sold in May 1943 to the Pennsylvania Railroad (PRR), which held a 30% share in N&W's stock at the time.[19][20] The PRR reclassified their Y3's as HH1's, renumbered them as Nos. 373-378, and assigned them to operate out of their mainline terminal in Enola, Pennsylvania and on their Harrisburg—Hagerstown branch.[19][20]

Throughout 1943, eight other Y3's were sold to the Atchison, Topeka and Santa Fe Railroad, where they were renumbered as Nos. 1790-1797.[18][20] The Santa Fe assigned the eight 2-8-8-2's to operate on Raton Pass, where they helped push heavy freight trains up the Raton grade, and they sometimes assisted 4-8-4's in pulling longer passenger consists.[18] The railroad quickly became ambivalent to Nos. 1790-1797's performances; while they were able to assist longer trains at Raton Pass, the locomotives' slow speeds made them incompatible with the Santa Fe's fast-moving operations.[18]

 
Virginian Railway USE class No. 737, which was originally built as Norfolk and Western 2015 and previously operated as Santa Fe 1792[20]

In December 1947, the Santa Fe sold Nos. 1790-1796 to the Virginian Railway, where they were renumbered again as Nos. 736-742, reclassified as USE's, and rebuilt at their Princeton, West Virginia shops.[18][20] The Virginian purchased the former Y3's to replace their aging 2-10-10-2's, and the USE's were assigned to pull the railway's heavy coal trains over the Clark's Gap ruling grade.[15][18] When the Virginian acquired diesel locomotives from Fairbanks-Morse in 1954, all the USE's were retired from the roster.[18]

In June 1945, the N&W sold five more Y3's to the Union Pacific Railroad (UP), where they were renumbered as Nos. 3670-3674.[18][20] The UP assigned their five 2-8-8-2's to operate around Green River and Rock Springs, Wyoming, and while they were shown to be successful in stop gap purposes, they were quickly deemed surplus, since the UP's 4-6-6-4 "Challengers" and 4-8-8-4 "Big Boys" were more powerful and reliable.[18][19] Nos. 3670-3674 were all scrapped in 1948.[19]

Preservation

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Main article: Norfolk and Western 2050

Only one of the Y3a's, No. 2050, has been preserved.[5] In 1958 and 1959, several Y3a's were sold for scrap to the Armco Steel Corporation in Middletown, Ohio, but No. 2050 was one of three such locomotives that Armco chose at random to be used as stationary boilers.[21][22][23] The other two Y3a's were eventually scrapped, but No. 2050 remained in outdoor storage until 1976, when it was donated to the Illinois Railway Museum (IRM), and it was moved to the museum's property in Union, Illinois for static display.[22][23][24]

See also

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Notes

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  1. ^ The first USRA 2-8-8-2’s were originally planned to be assigned to the Virginian Railway, but for unknown reasons, they were quickly delivered to the N&W, instead.[1]

References

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  1. ^ a b c d e f Dixon, Parker & Huddleston (2009), p. 45
  2. ^ a b c Dixon, Parker & Huddleston (2009), p. 46
  3. ^ a b c d e Dixon, Parker & Huddleston (2009), pp. 58–59
  4. ^ "Norfolk & Western 2050". Illinois Railway Museum. Retrieved 2023-10-19.
  5. ^ a b c d e f g h Dixon, Parker & Huddleston (2009), p. 48
  6. ^ Dixon, Parker & Huddleston (2009), pp. 21, 25
  7. ^ a b Dixon, Parker & Huddleston (2009), p. 33
  8. ^ a b c Dixon, Parker & Huddleston (2009), p. 35
  9. ^ a b c Dixon, Parker & Huddleston (2009), p. 47
  10. ^ Dixon, Parker & Huddleston (2009), p. 36
  11. ^ a b Dixon, Parker & Huddleston (2009), p. 37
  12. ^ Young (2013), p. 18
  13. ^ Dixon, Parker & Huddleston (2009), p. 39
  14. ^ Dixon, Parker & Huddleston (2009), p. 40
  15. ^ a b Dixon, Parker & Huddleston (2009), p. 31
  16. ^ a b Drury (1993), p. 299, 308
  17. ^ Dixon, Parker & Huddleston (2009), pp. 22–23
  18. ^ a b c d e f g h i Dixon, Parker & Huddleston (2009), p. 125
  19. ^ a b c d Dixon, Parker & Huddleston (2009), p. 126
  20. ^ a b c d e f Dixon, Parker & Huddleston (2009), p. 127
  21. ^ "Steam News Photos". Trains. Vol. 31, no. 6. Kalmbach Publishing. April 1971. p. 17. Retrieved June 27, 2024.
  22. ^ a b Huddleston (2002), p. 86
  23. ^ a b "Rail Museum Gift Lacks 'Horsepower'". Springfield News-Sun. February 1, 1976. p. 40.
  24. ^ Young (2013), p. 172

Further reading

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