Norfolk and Western A class

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Norfolk and Western A class
NW Class A.jpg
Norfolk & Western No. 1206 at the New York World's Fair on June 17, 1939
Type and origin
Power typeSteam
Builder N&W's Roanoke Shops
Serial number266–267, 273–280, 332–346, 353–362, 380–387
Build date1936–1950
Total produced43
Specifications
Configuration:
   Whyte 2-6-6-4
   UIC (1′C)C2′ h4g
Gauge 4 ft 8+12 in (1,435 mm) standard gauge
Leading dia. 33 in (838 mm)
Driver dia.70 in (1,778 mm)
Trailing dia. 42 in (1,067 mm)
Wheelbase Loco & tender: 108.27 ft (33.00 m)
Length121 ft 9+14 in (37.1 m) including tender [1]
Width11 ft (3.35 m)
Height15 ft 10 in (4.83 m)
Axle load 72,000 lb (33,000 kilograms; 33 metric tons)
Adhesive weight 433,350 lb (196,560 kilograms; 196.56 metric tons)
Loco weight573,000 lb (260,000 kilograms; 260 metric tons)
Tender weight378,600 lb (171,700 kilograms; 171.7 metric tons)
Total weight951,600 lb (431,600 kilograms; 431.6 metric tons)
Fuel type Coal
Fuel capacity30 short tons (27 t)
Water cap.22,000 US gal (83,000 L; 18,000 imp gal)
Fuel consumption7 short tons (6.4 t) of coal per hour
13,906 US gal (52,640 L; 11,579 imp gal) of water per hour
Firebox:
  Grate area122 sq ft (11.3 m2)
Boiler106 in (2,692 mm)
Boiler pressure300 lbf/in2 (2.07 MPa)
Heating surface:
  Firebox587 sq ft (54.5 m2)
Superheater:
  TypeType E
  Heating area2,703 sq ft (251.1 m2)
Cylinders Four
Cylinder size 24 in × 30 in (610 mm × 762 mm)
Valve gear Baker
Performance figures
Maximum speedOver 70 mph (110 km/h) [1]
Power output5,400 hp (4,030 kW)
Tractive effort 114,000 lbf (507.10 kN) [1]
Factor of adh. 3.8
Career
Operators Norfolk and Western
Class A
Numbers1200–1242
Retired1958–1959
Preserved(No. 1218)
DispositionOne preserved, remainder scrapped

The Norfolk and Western A was a class of 43 2-6-6-4 simple articulated steam locomotives built by the railroad's own Roanoke Shops between 1936 and 1950 and operated until the late 1950s. The locomotives hauled fast and heavy freight trains for the railroad and only one has been preserved, No. 1218.

Contents

History

A drawing design of the N&W class A locomotive Norfolk and Western class A drawing.jpg
A drawing design of the N&W class A locomotive
N&W A No. 1209 Nw1209-1 N&W A 1209.jpg
N&W A No. 1209

Upon delivery on the class starting in 1936, starting with 1200 and 1201, they were tested and proved successful. The railroad was satisfied with the class and bought eight more the following year. During testing, N&W officials were very impressed with their performance, as they were capable of pulling 4,800 tons at 25 mph on a 0.5% grade and 7,500 tons at 64 mph on level track. During World War II, the railroad built 25 more "A"s between 1943 and 1944 and finally eight more between 1949 and 1950. They were some of the last mainline steam locomotives to be put into service.

The locomotives had a cast-steel frame and Timken roller bearings on nearly every surface. The last five had McGill MultiRol roller bearings in the side and main rods, making them the only articulateds to take such friction-reducing measures. They were assigned to freight service and have pulled slower heavy freight trains as well as fast time freight. They were rated at 13,000 tons of drag freight between Williamson, West Virginia and Portsmouth, Ohio, and could reach speeds up to 42 mph pulling such a load. Between Portsmouth and Columbus, Ohio, they were rated at 5,200 tons of fast freight and could reach 65 mph. On passenger runs, they could reach 70 mph. Over the Kenova District, the railroad increased the "A"'s slow freight tonnage ratings from 13,000 to 14,500 tons. To reduce the amount of stops for water, they ran with auxiliary tenders with capacities of up to 20,800 gallons of water. This also increased gross ton-miles per train hour (GTM) 31% on the 112-mile Kenova District between Williamson and Portsmouth, Ohio.

In 1952, the N&W tested one of the "A"s and Y6b-class locomotives against a four-unit Electro-Motive Division (at that time, of General Motors) F7 diesel set. The tests indicated that fuel costs and similar items were roughly the same, and the test was considered a tie. However, diesels eventually won out for lower maintenance and other operational costs. As successful as the class was, diesels eventually replaced them. Retirement started in 1958 and by 1959, all of the "A"s had been retired. [2]

Preservation

Norfolk and Western 1218, the sole class A remaining, on display at the Virginia Museum of Transportation in October 2016 Norfolk and Western Railway No. 1218 - October 2016.jpg
Norfolk and Western 1218, the sole class A remaining, on display at the Virginia Museum of Transportation in October 2016

Only one "A" class has been preserved, No. 1218. It was retired in 1959 and on the same year, it was purchased by the Union Carbide Co. in Charleston, West Virginia, where it was used as a stationary boiler at a chemical plant. [3] In 1965, it was repurchased by New England millionaire F. Nelson Blount for his locomotive collection at Steamtown, U.S.A. in Bellows Falls, Vermont. [3] Three years later, its former owner Norfolk & Western did a cosmetic restoration on 1218 at their East End Shops in Roanoke, Virginia (the same place where it was built). [3] After that, it was put on display at the Roanoke Transportation Museum in 1971. [3] It was restored and operated in excursion service for the Norfolk Southern steam program between 1987 and 1991 and went for an overhaul. The program was then canceled in 1994 and the locomotive was eventually put back on display at the Virginia Museum of Transportation in Roanoke, Virginia. It is the only surviving 2-6-6-4 steam locomotive in the world.

Roster

Table of orders and numbers
Year builtQuantitySerial nos.N&W no.Notes
19362266–2671200–1201Scrapped May 1958.
19378273–2801202-1209Scrapped June 1958.
194315332–3461210–1224 No. 1218 preserved, ran excursions between 1987 and 1991, sole remaining 2-6-6-4. Remainder scrapped October 1958-December 1959.
194410353–3621225–1234Scrapped July 1959.
1949–19508380–3871235–1242Scrapped August to September 1959. Nos. 1238-1242 equipped with Timken Roller Bearing Rods.

Excursion star

Norfolk and Western 1240
Norfolk & Western Railway Class "A" 2-6-6-4 Norfolk, Virginia c. 1956 (postcard).jpg
Norfolk and Western no. 1240 at Norfolk, Virginia c. 1956
Type and origin
Power typeSteam
Builder N&W's Roanoke Shops (East End Shops)
Serial number385
Build dateMay 1950
Specifications
Configuration:
   Whyte 2-6-6-4
Driver70 in (1,778 mm)
Gauge 1,435 mm (4 ft 8+12 in)
Leading dia. 33 in (838 mm)
Driver dia.70 in (1.778 m)
Trailing dia. 42 in (1.067 m)
Axle load 72,000 lb (33 t)
Adhesive weight 432,350 lb (196.11 t) [4]
Loco weight573,000 lb (260 t)
Tender weight378,600 lb (171.7 t)
Total weight951,600 lb (431.6 t)
Fuel type Coal
Fuel capacity30 short tons (60,000 lb)
Water cap.22,000 US gal (83,000 L)
Fuel consumption7 t (6.9 long tons; 7.7 short tons) of coal per hour 13,906 US gal (52,640 L; 11,579 imp gal) of water per hour
Firebox:
  Grate area122 sq ft (11.3 m2)
Boiler106 in (2,692 mm)
Boiler pressure300 lbf/in2 (2.07 MPa)
Heating surface:
  Firebox587 sq ft (54.5 m2)
  Tubes and flues6,052 sq ft (562.2 m2)
Superheater:
  TypeType E
  Heating area2,703 sq ft (251.1 m2)
Cylinders Four, simple articulated
Cylinder size 24 in × 30 in (610 mm × 760 mm)
Valve gear Baker
Valve typePiston valves
Performance figures
Tractive effort 114,000 lbf (507.10 kN)
Factor of adh. 3.8
Career
Operators Norfolk and Western Railway
Retired1959
Scrapped1959
DispositionScrapped
References: [5]

Norfolk and Western 1240 was a four-cylinder simple articulated 2-6-6-4 steam locomotive, built in May 1950 by the Norfolk and Western's (N&W) East End Shops in Roanoke, Virginia as part of the N&W's class "A" fleet of fast freight locomotives.

History

Construction and revenue service

Norfolk and Western 1240 was manufactured in May 1950 by the Norfolk and Western Railway at their own Roanoke Shops. 1240 was the third member of the final batch of five class A 2-6-6-4 locomotives built with roller bearing side rods. [6]

Excursion run and scrapping

No. 1240 was retired from active service on the Norfolk and Western Railway when they began replacing steam locomotives with diesel locomotives.

No. 1240 would be fired up again on July 11, 1959 and used on the N&W's Farewell to Steam excursion train along with class Y6b No. 2174. [7] No. 1240 pulled the excursion from Roanoke, Virginia to Bluefield, West Virginia, where the train was transferred to No. 2174. The 2174 pulled it through the N&W's Pocahontas Division to Iaeger, and then it travelled over the Dry Fork Branch to Cedar Bluff. No. 2174 returned the excursion to Bluefield, and then No. 1240 returned the train to Roanoke. [8]

When the Farewell to Steam excursion had ended that same year in 1959, No. 1240 was sold for scrap.

Related Research Articles

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<span class="mw-page-title-main">Norfolk and Western 2174</span> Scrapped N&W Y-6b class 2-8-8-2 locomotive

Norfolk and Western 2174 was a Y6b class 2-8-8-2 compound Mallet steam locomotive, built by the Norfolk and Western Railway's (N&W) own Roanoke Shops, in 1948. No. 2174 and the other Y6bs were notably some of the most powerful steam locomotives ever built, being able to pull heavy freight and coal trains, unassisted. They were also some of the last steam locomotives ever built in the United States.

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References

  1. 1 2 3 "All Aboard - Steam locomotive to power day-long excursions from Greenville". Gaffney Leader. Gaffney, SC. March 20, 1987. p. 7 via Newspapers.com. Open Access logo PLoS transparent.svg
  2. "Norfolk & Western 2-6-6-4 Locomotives in the USA".
  3. 1 2 3 4 Wrinn (2000) , pp. 73–74
  4. Gerbracht, Thomas R. (1989). The Making of A Legend – The Niagara Story Part 2 (PDF). New York Central System Historical Society. p. 17.{{cite book}}: CS1 maint: date and year (link)
  5. Jeffries (1980), p. 324.
  6. Le Massena, Robert A. (November 1991). N&W's Secret Weapons. Trains Magazine. pp. 64–69.
  7. Solomon (2015) , p. 127
  8. Sears, Robert (July 12, 1959). "Smoke-Blackened Rail Buffs End 'Safari in Steam'". The Roanoke Times. Vol. 146, no. 12. p. 9 via Newspapers.com.

Bibliography

Further reading