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Classic Streamliners - TRAIN​CYCLOPEDIA

EMD FP7 Diesel Locomotive
The EMD FP7 was a 1,500 horsepower, B-B dual-service passenger and freight-hauling diesel locomotive produced between June 1949 and December 1953 by General Motors' Electro-Motive Division and General Motors Diesel. Final assembly was at GM-EMD's La Grange, Illinois plant, excepting locomotives destined for Canada, in which case final assembly was at GMD's plant in London, Ontario. The FP7 was essentially EMD's F7A locomotive extended by four feet to give greater water capacity for the steam generator for heating passenger trains.

Design
While EMD's E-units were successful passenger engines, their A1A-A1A wheel arrangement made them less useful in mountainous terrain. Several railroads had tried EMD's F3 in passenger service, but there was insufficient water capacity in an A-unit fitted with dynamic brakes. The Atchison, Topeka and Santa Fe Railway's solution was to replace the steam generators in A-units with a water tank, and so only fitted steam generators into the B-units. The Northern Pacific Railway's solution was to fit extra water tanks into the first baggage car, and to pipe the water to the engines. The real breakthrough came when EMD recognized the problem and added the stretched FP7 to its catalog.

A total of 381 cab-equipped lead A units were built; unlike the freight series, no cabless booster B units were sold. Regular F7B units were sometimes used with FP7 A units, since they, lacking cabs, had more room for water and steam generators. The FP7 and its successor, the FP9, were offshoots of GM-EMD's highly successful F-unit series of cab unit freight diesels.

F3s, F7s, and F9s equipped for passenger service are not FP-series locomotives, which although similar in appearance have distinctive differences, including but not limited to the greater body length. The extra 4 ft of length was added behind the first body-side porthole, and can be recognized by the greater distance between that porthole and the first small carbody filter grille. The corresponding space beneath the body, behind the front truck, was also opened up; this either remained an empty space or was filled with a distinctive water tank shaped like a barrel mounted transversely.

Original buyers

Locomotives built by EMD at La Grange, Illinois
Electro-Motive Division (demonstrator)
Quantity FP7: 1
Quantity F7B (where bought with FP7): 2
Road numbers FP7: 7001
Road numbers F7B: 7002–7003
Notes: to Soo Line (Wisconsin Central) 2500A, 2500B, 2501B.

Electro-Motive Division (demonstrator)
Quantity FP7: 1
Quantity F7B (where bought with FP7): 2
Road numbers FP7: 9051
Road numbers F7B: 9052–9053
Notes: to Soo Line 500A, 500B, 501B.

Arabian American Oil Company (Saudi Arabia)
Quantity FP7: 2
Road numbers FP7: 1006–1007

Atlanta and West Point Rail Road
Quantity FP7: 4
Road numbers FP7: 551–554

Atlantic Coast Line
Quantity FP7: 44
Road numbers FP7: 850–893

Alaska Railroad
Quantity FP7: 3
Quantity F7B (where bought with FP7): 1
Road numbers FP7: 1510–1514 (even)
Road numbers F7B: 1507
Notes: 1510-1514 built with 567BC engines.

Chicago and Eastern Illinois Railroad
Quantity FP7: 11
Road numbers FP7: 1600–1609, 1609 2nd
Notes: 1609 1st destroyed at Mode, IL 6/28/1951 and rebuilt on a new frame with same road number and serial number.

Chesapeake and Ohio Railway
Quantity FP7: 16
Quantity F7B (where bought with FP7): 7
Road numbers FP7: 8000–8015
Road numbers F7B: 8500–8506

Chicago Great Western Railway
Quantity FP7: 3
Quantity F7B (where bought with FP7): 5
Road numbers FP7: 116-A, -C, 116-C 2nd
Road numbers F7B: 116-B,D,E,F,G

Notes: 116-C 1st destroyed at North Hanover, IL 6/2/1951 and rebuilt on a new frame with same road number and serial number.

Chicago, Rock Island and Pacific Railroad
Quantity FP7: 10
Road numbers FP7: 402–411
Notes: Commuter service.

Clinchfield Railroad
Quantity FP7: 1
Road numbers FP7: 200

Ferrocarriles Nacionales de México
Quantity FP7: 17
Quantity F7B (where bought with FP7): 7
Road numbers FP7: 6300–6309, 6328A–6334A
Road numbers F7B: 6328B–6334B

Ferrocarril Sonora-Baja California
Quantity FP7: 2
Road numbers FP7: 23035–23036

Florida East Coast Railway
Quantity FP7: 5
Road numbers FP7: 571–575

Georgia Railroad
Quantity FP7: 3
Road numbers FP7: 1002–1004

Louisville and Nashville Railroad
Quantity FP7: 45
Road numbers FP7: 600–634, 663–672

Milwaukee Road
Quantity FP7: 32
Quantity F7B (where bought with FP7): 16
Road numbers FP7: 90A,C–105A,C
Road numbers F7B: 90B–105B
Notes: 90–94 renumbered 60–64 for freight service.

Missouri-Kansas-Texas Railroad
Quantity FP7: 8
Quantity F7B (where bought with FP7): 4
Road numbers FP7: 121A,C–124A,C
Road numbers F7B: 121B–124B

Northern Pacific Railway
Quantity FP7: 2
Road numbers FP7: 6600–6601

Pennsylvania Railroad
Quantity FP7: 40
Quantity F7B (where bought with FP7): 14
Road numbers FP7: 9832A–9871A
Road numbers F7B: 9832B–9858B (even)
Notes: A units renumbered 4332-4371 and B units 4150-4163 by PRR for Penn Central; 18 scattered A units 4332-4370 to Conrail.

Reading Company
Quantity FP7: 8
Road numbers FP7: 900–907
Notes: 900, 902, 903 to SEPTA, renumbered 4371-4373.

Richmond, Fredericksburg and Potomac Railroad
Quantity FP7: 3
Road numbers FP7: 1201–1203

St. Louis-San Francisco Railway
Quantity FP7: 12
Road numbers FP7: 5040–5051

Soo Line
Quantity FP7: 5
Quantity F7B (where bought with FP7): 2
Road numbers FP7: 501A–503A, 504–505
Road numbers F7B: 502B–503B

Soo Line (Wisconsin Central Railway)
Quantity FP7: 1
Road numbers FP7: 2501A

Southern Railway (Cincinnati, New Orleans and Texas Pacific Railway)
Quantity FP7: 20
Road numbers FP7: 6130–6149

Southern Pacific Company
Quantity FP7: 16
Road numbers FP7: 6446–6461
Notes: 6446-6451; 6453-6459; 6461 to Amtrak 110-123.

St. Louis Southwestern Railway (“Cotton Belt”)
Quantity FP7: 1
Road numbers FP7: 330
Notes: Renumbered to 306 then leased to Southern Pacific as SP 6462.

Union Pacific Railroad
Quantity FP7: 2
Quantity F7B (where bought with FP7): 2
Road numbers FP7: 911-912
Road numbers F7B: 910B, 910C
Notes: Renumbered to 1498 - 1499.

Western Railway of Alabama
Quantity FP7: 2
Road numbers FP7: 502–503

Western Pacific Railroad
Quantity FP7: 4
Quantity F7B (where bought with FP7): 2
Road numbers FP7: 804A,C–805A,C
Road numbers F7B: 804B–805B

Total Quantity FP7: 324

Total Quantity F7B (where bought with FP7): 64

Locomotives built by GMD at London, Ontario

Canadian Pacific Railway
Quantity FP7: 35
Quantity F7B (where bought with FP7): 29
Road numbers FP7: 4028–4041, 4058–4063, 4066–4075, 4099–4103
Road numbers F7B: 4424–4448, 4459–4462

Ontario Northland Railway
Quantity FP7: 22
Road numbers FP7: 1500–1521
Total Quantity FP7: 57, Total Quantity F7B (where bought with FP7): 29

Preserved examples
Alaska Railroad 1510 and 1512, used by the Verde Canyon Railroad in Clarkdale, Arizona, on its excursion train.
Chicago Great Western Railway 116-A, on display, at Hub City Heritage Railroad Museum, Oelwein, Iowa.
Canadian Pacific Railway 4071, renumbered as Western Maryland Railway 243, in working condition and in use at the Durbin and Greenbrier Valley Railroad.
Clinchfield Railroad 200, renumbered as Western Maryland Railway 67, in working condition and in use at the Durbin and Greenbrier Valley Railroad.
Canadian Pacific Railway 4069, in working condition and in use at the West Coast Railway Heritage Park, Squamish, BC, Canada.
Milwaukee Road 101A, on static display (was non-operational when acquired but reportedly restored by volunteers to operable condition) in Cresco, IA.
Milwaukee Road 104C, at the Illinois Railway Museum, Union, Illinois.
Milwaukee Road 96C, in Monon livery waiting to be restored at the Indiana Transportation Museum, Noblesville, Indiana.
Reading 900, at the Reading Railroad Museum in Hamburg, Pa.
Reading 902, on display at Steamtown National Historic Site in Scranton, Pennsylvania.
Reading 903, also on display at Steamtown.
Soo Line 500A (originally EMD demonstrator #9051), on display at Ladysmith, Wisconsin.
Soo Line 2500A (originally EMD demonstrator #7001), restored to working condition, at Lake Superior Railroad Museum, Duluth, Minnesota.
Southern Railway No. 6133, in working condition at the North Carolina Transportation Museum at Spencer, North Carolina.
Southern Railway No. 6143, in working condition and in use at the Stone Mountain Park at Atlanta, Georgia.
Southern Railway, two units in use by the Kentucky Dinner Train operation out of Bardstown, Kentucky.
Western Pacific 805-A, a locomotive used on the famous California Zephyr, is preserved in operable condition at the Western Pacific Railroad Museum at Portola, California.

EMD FP7 Overview
Type and origin
Power type: Diesel-electric
Builder: General Motors Electro-Motive Division (EMD), General Motors Diesel (GMD, Canada)
Model: FP7
Build date: June 1949 – December 1953
Total produced: 381
Specifications
AAR wheel arrangement: B-B
Gauge: 4 ft 8-1⁄2 in
Trucks: Blomberg B
Wheel diameter: 40 in
Minimum curve: 23° (250.79 ft radius)
Wheelbase: 43 ft
Length: 55 ft 2-1⁄4 in
Width: 10 ft 8 in
Height: 15 ft
Loco weight: 260,000 lb
Fuel capacity: 1,200 US gal
Prime mover: EMD 567B
RPM range: 800
Engine type: Two-stroke V16 diesel
Aspiration: Roots-type supercharger
Generator: EMD D-12
Traction motors: (4) EMD D-27-B
Cylinders: 16
Cylinder size: 8-1⁄2 in × 10 in
Performance figures
Power output: 1,500 horsepower
Career
Locale: North America, Saudi Arabia

See also:

WP 805-A

EMD Diesel Locomotives

GM-EMD

Diesel Locomotives

An EMD FP7 Slideshow.

(Click or tap image for larger view)

EMD logo.

AMTRAK EMD FP7 No. 113 leading two EMD SDP40Fs with the San Francisco Zephyr at Yuba Gap, 1975. Photo by Drew Jacksich.    "Amtrak San Francisco Zephyr" by Drew Jacksich from San Jose, CA, The Republic of California - AMTK 113 Yuba Gap Feb1975. Licensed under CC BY 2.0 via Commons - https://commons.wikimedia.org/wiki/File:Amtrak_San_Francisco_Zephyr.jpg#/media/File:Amtrak_San_Francisco_Zephyr.jpg

AMTRAK EMD FP7 No. 113 leading two EMD SDP40Fs with the San Francisco Zephyr at Yuba Gap, 1975. Photo by Drew Jacksich.
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