USRA Heavy Pacific

Last updated
USRA Heavy Pacific
Type and origin
Power typeSteam
Builder
Total produced
  • Originals: 20
  • Copies: 88
Specifications
Configuration:
   Whyte 4-6-2
   UIC 2′C1′ h2
Gauge 4 ft 8+12 in (1,435 mm)
Driver dia.79 in (2,007 mm)
Wheelbase
  • Coupled: 14 ft 0 in (4.27 m)
  • Locomotive: 36 ft 2 in (11.02 m)
  • Loco & tender:70 ft 8+12 in (21.55 m)
Axle load 60,000 lb (27,000 kg)
Adhesive weight 180,000 lb (82,000 kg)
Loco weight300,000 lb (140,000 kg)
Tender weight144,000 lb (65,000 kg)
Total weight444,000 lb (201,000 kg)
Fuel capacityCoal
Water cap.8,000 US gal (30,000 L; 6,700 imp gal)
Tender cap.32,000 lb (15,000 kg)
Firebox:
  Firegrate area
70.8 sq ft (6.58 m2)
Boiler pressure200 psi (1.38 MPa)
Heating surface3,808 sq ft (353.8 m2)
  Tubes2,407 sq ft (223.6 m2)
  Flues1,090 sq ft (101 m2)
  Firebox284 sq ft (26.4 m2)
Superheater:
  Heating area882 sq ft (81.9 m2)
Cylinders Two, outside
Cylinder size 27 in × 28 in (686 mm × 711 mm)
Valve gear Baker
Valve type14-inch (356 mm) piston valves
Performance figures
Tractive effort 43,800 lbf (194.83 kN)
Factor of adh. 4.1

The USRA Heavy Pacific was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. This was the standard heavy passenger locomotive of the USRA types, and was 4-6-2 wheel arrangement in the Whyte notation, or 2′C1′ in UIC classification.

Contents

Roster fleet

Original locomotives

A total of 20 locomotives were built under USRA control, with the production split between the Baldwin Locomotive Works and the American Locomotive Company's Richmond plant; these were sent to the following railroads:

Table of original USRA allocation [1]
RailroadQuantityClassRoad numbersBuiltNotesRetired
Erie Railroad (ERIE)
20
K-5
2915–2934
1919Ten K-5-As were also built as copies (Nos. 2935-2944) in 1923 and a K-5-B (No. 2960) in 1926 by Baldwin. [2] 1950-1952

Locomotive copies

Other post-USRA derivatives include the Baltimore and Ohio P-7 and the Southern Railway Ps-4 classes, the former having larger 80 inch drivers, higher tractive effort, and increased boiler pressure, and the latter with smaller 73 inch drivers, larger cabs, feedwater heaters, and later batches given larger tenders. [3]

Table of USRA copies
RailroadQuantityClassRoad numbersBuiltNotesRetired
Baltimore & Ohio (B&O)
20
P-7
5300-5319
1927Built by Baldwin. [4] 1958
Southern Railway (SOU)
64
Ps-4
1366-1409, 6471-6482, 6675-6691
1923-1928
  • Thirty-six (Nos. 1366-1392, 6471-6475, and 6684-6687) built between 1923 and 1924 at ALCO's Schenectady Works. [5]
  • Twenty-two (Nos. 1393-1404, 6476-6482, and 6688-6691) built in 1926 at ALCO's Richmond Works. [6]
  • The last five (Nos. 1405-1409) built in 1928 by Baldwin. [6]
1949-1953
West Point Route (WPR)
2
P-74
190 & 290
1926Nos. 190 and 290 were both built for the Western Railway of Alabama (WRA) and the Atlanta and West Point Railroad (A&WP), respectively. [7] 1954
Total88

Preservation

Three copies have been preserved.

No.BuilderYear builtPost-USRA ownerLocationImageDisposition
290 Lima Locomotive Works 1926 Atlanta and West Point Railroad Southeastern Railway Museum
A&wp290-serm-front.jpg
In storage, awaiting cosmetic restoration
5300 Baldwin Locomotive Works 1927 Baltimore and Ohio Railroad B&O Railroad Museum
Pacific locomotive, President Washington, B&O RR (CJ Allen, Steel Highway, 1928).jpg
Undergoing cosmetic restoration
1401 American Locomotive Works 1926 Southern Railway National Museum of American History
Southern Ps4.jpg
On static display

Related Research Articles

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<span class="mw-page-title-main">United States Railroad Administration</span> WWI-era temporary railroad nationalization program

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<span class="mw-page-title-main">USRA 0-6-0</span>

The USRA 0-6-0 was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. This was the standard light switcher of the USRA types, and was of 0-6-0 wheel arrangement in the Whyte notation, or "C" in UIC classification.

The USRA 0-8-0 was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. This was the standard heavy switcher of the USRA types, and was of 0-8-0 wheel arrangement in the Whyte notation, or "D" in UIC classification.

<span class="mw-page-title-main">USRA Light Mikado</span> Class of American two-cylinder 2-8-2 locomotives

The USRA Light Mikado was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. This was the standard light freight locomotive of the USRA types, and was of 2-8-2 wheel arrangement in the Whyte notation, or 1′D1′ in UIC classification.

<span class="mw-page-title-main">USRA Heavy Mikado</span>

The USRA Heavy Mikado was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration (USRA), the nationalized railroad system in the United States during World War I. These locomotives were of 2-8-2 wheel arrangement in the Whyte notation, or 1′D1′ in UIC classification. A total of 233 locomotives were built to this plan for the USRA; postwar, it became a de facto standard design, which was built to the total of 957 locomotives including the USRA originals and all subsequent copies.

<span class="mw-page-title-main">USRA Heavy Santa Fe</span>

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<span class="mw-page-title-main">USRA Light Santa Fe</span>

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<span class="mw-page-title-main">Southern Railway 1401</span> Preserved American 4-6-2 locomotive (SOU Ps-4 class)

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<span class="mw-page-title-main">USRA Light Pacific</span> Class of American two-cylinder 4-6-2 locomotives

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The USRA 2-8-8-2 was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. These locomotives were of 2-8-8-2 wheel arrangement in the Whyte notation, or (1'D)'D1' in UIC classification. A total of 106 locomotives were built to this plan for the USRA; postwar, it became a de facto standard design.

<span class="mw-page-title-main">Atlanta and West Point 290</span> Preserved American 4-6-2 locomotive

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<span class="mw-page-title-main">Southern Railway Ps-4 class</span> Class of 64 American 4-6-2 locomotives

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The USRA Light Mountain was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. This was the standard light freight locomotive of the USRA types, and was of 4-8-2 wheel arrangement in the Whyte notation, or 2′D1′ in UIC classification.

The USRA Heavy Mountain was a USRA standard class of steam locomotive designed under the control of the United States Railroad Administration, the nationalized railroad system in the United States during World War I. This was the standard light freight locomotive of the USRA types, and was of 4-8-2 wheel arrangement in the Whyte notation, or 2′D1′ in UIC classification.

<span class="mw-page-title-main">Atlantic Coast Line 1504</span> Preserved ACL P-5-A class 4-6-2 locomotive

Atlantic Coast Line 1504 is a 4-6-2 steam locomotive built in March 1919 by the American Locomotive Company (ALCO) of Richmond, Virginia, for the Atlantic Coast Line Railroad (ACL) as a member of the P-5-A class under the United States Railroad Administration (USRA) standard. No. 1504 was assigned to pull ACL's premier main line passenger trains during the 1920s to early 40s and even main line freight trains in the late 1940s until it was retired from revenue service at the end of 1952.

<span class="mw-page-title-main">Grand Trunk Western 5629</span> Scrapped GTW K-4-a class 4-6-2 locomotive

Grand Trunk Western 5629 was a 4-6-2 K-4-a steam locomotive, which was a copy of the United States Railroad Administration's (USRA) Light Pacific design, built by American Locomotive Company (ALCO) in 1924, for the Grand Trunk Western Railroad. It was used to haul commuter passenger trains in Michigan until 1959 when it was purchased by Chicago-based railfan Richard Jensen for use in pulling several excursion trains in the Chicago area throughout the 1960s.

References

  1. Drury (2015) , p. 50.
  2. Drury (2015) , p. 176.
  3. Bryant, H. (October 1950). "Ps-4". Trains : 20–26.
  4. Drury (2015) , p. 76.
  5. Ranks & Lowe (1966) , p. 150.
  6. 1 2 Ranks & Lowe (1966) , pp. 151–152.
  7. Drury (2015) , p. 67.