EMD GP7
This article includes a list of general references, but it lacks sufficient corresponding inline citations. (September 2012) |
EMD GP7 | |
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dynamic brakes | |
Train brakes | Air, schedule 6-BL[3] or 6-BLC.[4] Schedule 24-RL offered as optional. |
Performance figures | |
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Maximum speed | 65 mph (105 km/h) |
Power output | 1,500 hp (1,119 kW) |
Tractive effort | Starting: 65,000 lbf (29,484 kgf) @25% Continuous: 40,000 lbf (18,144 kgf) @9.3 mph (15 km/h) |
Career | |
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Operators | GP10s , many in service |
The EMD GP7 is a four-axle (
The GP7 was the first EMD road locomotive to use a
Of the 2,734 GP7's built, 2,620 were for American railroads (including 5 GP7B units built for the Atchison, Topeka and Santa Fe Railway), 112 were built for Canadian railroads, and 2 were built for Mexican railroads.
This was the first model in EMD's GP (General Purpose) series of locomotives. Concurrently, EMD offered a six-axle (
History
The GP7 proved very popular, and EMD was barely able to meet demand, even after opening a second assembly plant at
Identification
The GP7, GP9 and GP18 locomotives share a similar car-body that evolved over time. Most GP7s had three sets of ventilation grills under the cab (where the GP9 only had one), and two pair of grills at the end of the long hood (where only the pair nearest the end was retained on the GP9).[2] However, some late GP7s were built with car-bodies that were identical to early GP9s. Early GP7s had a solid skirt above the fuel tank, while late GP7s and early GP9s had access holes in the skirt (see photo of Illinois Terminal 1605, top left). Many railroads later removed most of the skirt to improve access and inspection.
Locomotives could be built with the
Original buyers
Locomotives built by Electro-Motive Division, USA
Owner | Quantity | Numbers | Notes |
---|---|---|---|
Electro-Motive Division (demonstrator)
|
1 | 525 | 1350 hp GP7m; to Atchison, Topeka and Santa Fe 99, renumbered 2899[11] This unit was built with a 567BC engine. |
3 | 100 (ex-922), 200, 300 | to Chicago & North Western 1518–1520 | |
Aberdeen and Rockfish Railroad | 1 | 205 | |
Atchison, Topeka and Santa Fe | 244 | 2650–2893 | 2855-2858 were built with 567C engines |
5 | 2788A–2792A | GP7B; 2788A-2789A, 2791A-2792A were built with 567C engines | |
Atlanta and St. Andrews Bay | 2 | 501–502 | |
Atlanta and West Point Rail Road
|
5 | 571–575 | |
Atlantic and East Carolina Railway
|
1 | 501 | Renumbered 406. |
Atlantic Coast Line Railroad | 154 | 100-253 | |
Baltimore and Ohio Railroad | 33 | 720–731, 740–746, 910–922, 6405 | 728-729; 740-746 were built with 567BC engines |
Bangor and Aroostook Railroad | 16 | 560–575 | |
Belt Railway of Chicago | 8 | 470–477 | |
Boston and Maine Railroad | 23 | 1555–1577 | |
Butte, Anaconda and Pacific Railway | 3 | 101–103 | |
Central of Georgia Railway | 15 | 106–107, 120–132 | |
Central Railroad of New Jersey | 13 | 1520–1532 | |
Atlantic Coast Line Railroad (Charleston and Western Carolina Railway) | 21 | 200–220 | To Atlantic Coast Line 254-274. |
Chesapeake and Ohio Railway | 180 | 5700–5719, 5739–5797, 5800–5900 | 5720–5738 built by GMD |
Chicago and Eastern Illinois Railroad | 30 | 203–232 | |
Chicago and North Western Railway
|
110 | 1521–1550, 1556–1559, 1562–1599, 1601–1603, 1625–1659 | |
Chicago and North Western (Chicago, St. Paul, Minneapolis and Omaha Railway—"Omaha Road") | 11 | 151–161 | |
Chicago, Burlington and Quincy Railroad | 68 | 200–267 | 253-267 were built with 567BC engines |
Chicago Great Western Railway | 2 | 120–121 | |
Chicago, Rock Island and Pacific Railroad | 113 | 430–441, 1200–1237, 1250–1311, 1308 (2nd) | 1294-1299 were built with 567BC engines |
Clinchfield Railroad | 17 | 900–916 | |
Colorado and Wyoming Railway | 2 | 103–104 | Engines 103 & 104 are owned by the Pueblo Railway Foundation. Both locomotives are operable and used occasionally on Museum grounds . |
Colorado Fuel and Iron | 2 | 101–102 | Engine 102 is owned by the Pueblo Railway Foundation. The locomotive is operable and used occasionally on Museum grounds. |
Atlantic Coast Line Railroad (Columbia, Newberry and Laurens Railroad) | 5 | 100–104 | To Atlantic Coast Line 275-279. |
Delaware, Lackawanna and Western Railroad | 20 | 951–970 | To Erie Lackawanna, 1270-1284, 1405-1409. |
Denver and Rio Grande Western Railroad | 14 | 5100–5113 | |
Detroit and Toledo Shore Line Railroad | 10 | 41–50 | |
Detroit, Toledo and Ironton Railroad | 24 | 950–973 | 964-973 were built with 567BC engines |
Erie Railroad | 52 | 1200–1246, 1400–1404 | To Erie Lackawanna, same numbers. |
Florida East Coast Railway | 15 | 607–621 | |
Georgia and Florida Railroad
|
6 | 701–706 | |
Georgia Railroad
|
16 | 1021–1036 | 1035-1036 were built with 567BC engines |
Great Northern Railway | 56 | 600–655 | |
Illinois Central Railroad | 48 | 8800–8801, 8850–8851, 8900–8911, 8950–8981 | 8800–8801, 8900–8911 had steam generators |
Illinois Terminal Railroad | 6 | 1600–1605 | |
Kansas City Southern Railway | 8 | 155–162 | |
Kansas City Southern (Louisiana and Arkansas Railway) | 5 | 150–154 | |
Kansas, Oklahoma and Gulf Railway | 9 | 801–809 | |
Louisville and Nashville Railroad | 61 | 400–440, 500–514, 501–502 (2nd), 550–552 | |
Maine Central Railroad | 19 | 561–569, 571–580 | 566-569 were built with 567BC engines |
Meridian and Bigbee Railroad | 1 | 1 | |
Midland Valley Railroad | 4 | 151–154 | |
Minneapolis, St. Paul and Sault Ste. Marie Railroad ("Soo Line") | 7 | 375–378, 381–383 | |
Missouri Pacific Railroad | 208 | 4116–4194, 4197–4325 | 4116-4120, 4159-4165, 4203-4207, 4249-4253, 4284-4286, 4323-4324 owned by St. Louis, Brownsville and Mexico, 4121-4123, 4153-4158, 4197-4202, 4254-4255, 4287-4297, 4325 owned by International-Great Northern, 4290-4291, 4316-4320, 4325 were built with 567BC engines; 4292-4315, 4321-4324 were built with 567C engines. |
Missouri–Kansas–Texas Railroad | 33 | 1501–1529, 1761–1764 | 1700s had steam generators. Renumbered 91–123 |
Nashville, Chattanooga and St. Louis Railway | 37 | 700–731, 750–754 | 700-705 built with EMD AAR TypeA trucks[12] |
Ferrocarriles Nacionales de México | 2 | 6600–6601 | |
New York Central Railroad | 169 | 5600–5611, 5626-5675, 5686-5712, 5738-5817 | long hood forward |
New York Central Railroad (Peoria and Eastern Railway) | 14 | 5612-5625 | long hood forward |
New York Central Railroad (Pittsburgh and Lake Erie Railroad) | 35 | 5676-5685, 5713-5737 | long hood forward |
New York, Chicago and St. Louis Railroad ("Nickel Plate Road")
|
48 | 400–447 | |
Northern Pacific Railway | 20 | 550–569 | to Burlington Northern Railroad 1624–1643;[8] 560-569 were built with 567BC engines |
Pennsylvania Railroad | 66 | 8500–8512, 8545–8587, 8797–8806 | long hood forward |
Phelps Dodge Corporation | 7 | 1–2, 7–8, 27–29 | |
Portland Terminal Company [Maine] | 1 | 1081 | |
Reading Company | 44 | 600–636, 660–666 | 625-636 were built with 567BC engines |
Richmond, Fredericksburg and Potomac Railroad | 4 | 101–104 | |
Seaboard Air Line Railroad | 123 | 1700–1822 | |
Southern Railway | 57 | 2063–2077, 2156–2197 | |
Southern Railway (Cincinnati, New Orleans and Texas Pacific Railway) | 11 | 6200–6205, 6240–6244 | |
Southern Railway (Alabama Great Southern Railroad) | 5 | 6540–6544 | |
Southern Railway (Georgia Southern and Florida Railway) | 4 | 8210–8213 | |
St. Louis Southwestern Railway | 1 | 320 | Renumbered 304. |
St. Louis–San Francisco Railway | 129 | 500–549, 555–632, 615 (2nd) | |
Tennessee, Alabama and Georgia Railway | 3 | 707–709 | |
Texas and Pacific Railway | 21 | 1110–1130 | |
Texas Mexican Railway | 3 | 850–852 | |
Toledo, Peoria and Western Railway | 2 | 102–103 | |
Union Pacific Railroad | 30 | 700–729 | 720-729 were built with 567BC engines |
United States Army | 20 | 1821–1840 | Built with EMD AAR TypeA trucks; 12 later served on Alaska RR and 11 were retrucked with AAR Type B road trucks |
Wabash Railroad | 33 | 450–452, 454–483 | 453 built by GMD |
Western Maryland Railway | 4 | 20–23 | |
Western Pacific Railroad | 13 | 701–713 | |
Western Railway of Alabama | 6 | 521–526 | |
Totals | 2617 5 |
GP7 GP7B |
Locomotives built by General Motors Diesel, Canada
GP7 locomotives were built at GMD's London Ontario plant for domestic Canadian railway purchasers, and for some US railroads like the C&O and Wabash who owned and operated over trackage in Canada (specifically the southern Ontario area).
Owner | Quantity | Numbers | Notes |
---|---|---|---|
Algoma Central and Hudson Bay
|
21 | 150–170 | |
Canadian National Railways
|
25 | 4824, 7555–7578 | 4824 rebuilt October 1958 with parts from wrecked F3A. 7555-7578 renumbered to 4800-4823 mid-1957. |
Canadian Pacific Railway | 17 | 8409–8425 | 8410-8411 originally built with steam generators |
Chesapeake and Ohio Railway | 19 | 5720–5738 | C&O 5720-5729 resold to NYC as 5818-5827 for their Canadian operations |
Quebec North Shore and Labrador Railway | 22 | 100–101, 104–123 | |
Toronto, Hamilton and Buffalo Railway | 7 | 71–77 | To CP (minus wrecked 71), all rebuilt as CP 1682-1687 |
Wabash Railroad | 1 | 453 | Later to N&W 3453 |
Total | 112 |
Rebuilds, modifications and conversions
There are five GP7s on A J Kristopan's EMD Serial number page that reused previous serial numbers: B&O 6405 (preserved), CRI&P 1308 (2nd), L&N 501 (2nd) and 502 (2nd), and SLSF 615 (2nd). These rebuilt units were rebuilt as new on new frames. Another rebuild by GMD is that CN 4824 was rebuilt as a GP7 with parts from an F3A in October 1958.
Over 100 GP7s and four of the GP7Bs were built with 567BC or 567C engines starting in March 1953 through May 1954. These are noted on the roster above.
Many railroads rebuilt their GP7s with low short hoods; some railroads went further in their rebuilding than others. Missouri Pacific Railroad upgraded their GP7s with 567BC engines (a B-block upgraded to C-block specs) and replaced the standard EMD 2-stack exhaust with a 4-stack "liberated" exhaust, raising their power output to 1,600 horsepower (1.19 MW).[13]
In 1960 the Alaska Railroad purchased a dozen GP7Ls from the US Army and rebuilt eleven of them in 1965 with low short hoods for better visual clearance. One of the ten remaining Alaska GP7s was rebuilt by Morrison-Knudsen in 1976. The other nine units were rebuilt at Paducah Shops in 1976-1977.
Canadian Pacific Railway rebuilt their GP7 fleet in the early 1980's as GP7u units for yard service, including a chopped short hood, new numberboards and front cab windows, and upgrading the 567B prime movers with 645 power assemblies and to "BC" engine block specs (some upgraded with 567C engine blocks out of retired F-units).
Preservation
Numerous GP7s have been preserved on tourist lines and in museums. Holders include:
- Conway Scenic Railroad
- Florida Railroad Museum
- Illinois Railway Museum
- Lebanon Mason Monroe Railroad
- Minnesota Transportation Museum
- Tennessee Valley Railroad Museum
- United Railroad Historical Society of New Jersey
- Western Pacific Railroad Museum
- Grand Canyon Railway
- Toronto Railway Museum
- Southeastern Railway Museum
- Stone Mountain Scenic Railroad
- Hocking Valley Scenic Railway
- Grapevine Vintage Railroad
- Conrad Yelvington Distributors Railroad
See also
- List of GM-EMD locomotives
- List of GMD Locomotives
References
- ^ a b c d e f g h Schrenk & Frey (1988) p.291
- ^ a b c d Pinkepank, Jerry A. (1973) pp. 53
- ^ IC Railroad 1969 diesel diagrams, pp.46–47
- ^ a b NP Railway diesel diagram, NP 557–558
- ^ OCLC 38738930.
- ^ The History of EMD Diesel Engines
- ^ Pinkepank, Jerry A. (1973) p. 51
- ^ a b Schren & Frey (1988). p.162
- ^ NP Railway diesel diagram, NP 550–551
- ^ Schrenk & Frey (1988). p.159
- ^ Pinkepank, Jerry A. (1973) p.56
- ^ "L&N 494". rrpicturearchives.net. Retrieved 2019-06-14.
- ^ Marre & Pinkepank (1988). p.192
- ^ Marre & Pinkepank (1988). p.183
- "The History of EMD Diesel Engines". Pacific Southwest Railway Museum. Archived from the original on July 22, 2014. Retrieved December 14, 2005.
- "Illinois Central Railroad 1969 locomotive diagram book". icgphotos.com. Retrieved September 2, 2008.[permanent dead link]
- "Northern Pacific Railway diesel locomotive diagrams". Northern Pacific Railway Historical Association website. Retrieved September 2, 2008.
- Dorin, Patrick C. (1972). Chicago and North Western Power. Burbank, California: Superior Publishing. pp. 106–107. ISBN 0-87564-715-4.
- ISSN 0041-0934.
- Kristopans, A. J. "EMD 567 road switchers serial number webpage". Retrieved September 1, 2008.
- Kristopans, A. J. "General Motors Diesel Division (Canada) serial number webpage". Archived from the original on October 31, 2020. Retrieved September 1, 2008.
- http://utahrails.net/ajkristopans/GMEXPORT2_22-Sep-2015_update.txt Export GP7 serial numbers
- Marre, Louis A.; Jerry A. Pinkepank (1989). The Contemporary Diesel Spotter's Guide. ISBN 0-89024-088-4.
- Pinkpank, Jerry A (1973). The Second Diesel Spotter's Guide. Kalmbach Books. pp. 12, 26, 52–56. ISBN 0-89024-026-4.
- Schrenk, Lorenz P.; Robert L. Frey (1988). Northern Pacific Railway: Diesel Era, 1945–1970. ISBN 0-87095-102-5.
EMD Product Reference Data Card dated January 1, 1959 has the 567BC and 567C engine data used in the as-built roster.