EMD F7
| EMD F7 series | |
|---|---|
.JPG) EMD F7 # 274 of the Great Northern Railway
|
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| Number: | 3849 |
| Manufacturer: | Electro Motive Division |
| Year of construction (s): | 1949-1953 |
| Axis formula : | Bo'Bo ' |
| Gauge : | 1435 mm ( standard gauge ) |
| Length over coupling: | 15,544 mm |
| Service mass: | 104 t |
| Top speed: | 105 km / h to 160 km / h depending on the gear ratio |
| Hourly output : | 1,100 kW |
| Motor type: | EMD 567B , 2-stroke diesel |
| Power transmission: | electric |
| Number of traction motors: | 4th |
The EMD F7 is a series of diesel-electric locomotives from the US locomotive manufacturer General Motors Electro-Motive Division (EMD). They represent the numerically strongest sub -series of the EMD F series .
Originally designed as freight locomotives , some examples were also used in passenger train service. Among other things, they pulled the legendary El Capitan train on the Santa Fe and the Empire Builder on the Great Northern Railway .
A total of 2,366 machines with a driver's cab (A units) and 1,483 B units without a driver's cab were built. Until the construction of the EMD SD40-2 from 1972 onwards , the F7 was the diesel locomotive series with the highest numbers in North America .
construction
Technically, the F7 was based on the previous F3 series . Changes mainly affected the electrical equipment. So the last F3 can hardly be distinguished from the first F7.
The EMD F7 had a self-supporting locomotive body . A driver's cab was arranged at the front of the A units . Behind it was the engine room with the traction generator , which supplied the direct current for the traction motors , and the EMD 567B diesel engine . The type designation EMD 567 means that the engine had a displacement of 567 cubic inches (approx. 9.3 liters) per cylinder . The vehicles of the F-series had engines with 16 cylinders , while the locomotives of the EMD E-series had two engines with 12 cylinders each. The exhaust gases from each 8 cylinders were led to the outside via an exhaust pipe.
The battery box and the fuel tank were located between the bogies . It held 4,542 liters of diesel fuel .
equipment
At the customer's request, the machines were delivered with additional equipment. Many models with a dynamic brake supplied (Dynamic Brake). The traction motors are switched to generator mode. As a result, the locomotive's kinetic energy is first converted into electrical energy and then into heat via braking resistors . This additional braking effect made it possible to reduce the wear on the mechanical brake . The locomotives equipped in this way had an additional roof fan to dissipate the heat to the environment. This initially had a diameter of 36 "(914 mm) and was later enlarged to 48" (1,219 mm).
The F7 locomotives were equipped with a small boiler for train heating . This made it possible to use it in front of passenger trains. However, EMD advertised the F series as a freight locomotive. The four-axle EMD FP7 or the six-axle E-series, which were built at the same time, were intended for passenger trains. These had steam boilers with a significantly larger capacity.
variants
During the construction period, EMD implemented some detail improvements on the machines. Based on these differences, railway enthusiasts made a division into production phases, but this representation has never been confirmed by EMD.
The first units of the F7 had horizontal openings in the upper fan belt. Four more ventilation openings with horizontal grilles were arranged in the middle of the vehicle.
Between March 1951 and October 1951, the upper ventilation openings got a vertical grill. The cab doors were rounded off in the corners and the side windows were enlarged.
Since February 1952, the inner ventilation grilles in the center of the vehicle were supplied with vertical openings. The last machines also had no overhang at the rear of the vehicle.
List of first-time customers
Units built at Electro-Motive Division, USA
| society | Number A unit |
Number of B unit |
Company numbers A unit |
Road numbers B unit |
Remarks |
|---|---|---|---|---|---|
| Electro-Motive Division (factory locomotives) | 2 | - | 801-802 | - | to Great Northern 272A, B |
| 1 | - | 930 | - | to Boston & Maine 4268 | |
| 2 | - | 1950A, B | - | to Louisville & Nashville 857-858 | |
| 2 | 2 | 459A, D | 459B, C | to Union Pacific 1481–1482 (A units), 1496B, C (B units) | |
| 1 | - | 5040 | - | to Union Pacific 1483 | |
| - | 2 | - | 7002-7003 | FP7 -F7B-F7B factory locomotives; to Soo Line (Wisconsin Central) 2500B-2501B | |
| - | 2 | - | 9052-9053 | FP7-F7B-F7B factory locomotives; to Soo Line 500B-501B | |
| Atlantic Coast Line Railroad | 77 | 12 | 317, 348-423 | 392B-403B | |
| Alaska Railroad | 5 | 4th | 1500–1508 (even numbers) | 1501–1507 (odd numbers) | |
| Atchison, Topeka and Santa Fe Railway | 215 | 247 | 37, C-47, C, 202, C-280, C, 300-316, 306-314 (second), 336-344 | 37A, B-47A, B, 48A, 202A, B-280A, B, 300A, B-316A, B, 306A, B-314A, B (second), 336A, B-340A, B, 341A-344A | 37–47 passenger trains, 202–280 freight trains, 300–344 freight and passenger trains |
| Bessemer and Lake Erie Railroad | 28 | 26th | 701A-728A | 701B-726B | |
| Boston and Maine Railroad | 3 | 4th | 4265-4267 | 4265B-4268B | EMD factory locomotive 930 for B&M 4268 |
| Baltimore and Ohio Railroad | 157 | 100 | 180, A – 192, A (even numbers), 231–237 (odd numbers), 239, A – 297, A (odd numbers), 361, A – 365, A (odd numbers), 367–374, 929, A – 973, A (odd numbers), 975, 977, A – 993, A (odd numbers) | 180X, AX – 192A, AX (even numbers), 153X – 171Z (odd numbers), 231X – 237X (odd numbers), 249X – 297X (odd numbers), 361X, 363X, AX, 365X, AX, 367X, AX– 374X, AX (odd numbers & even numbers), 929X – 961X (odd numbers), 977X – 993X (odd numbers) | |
| Charleston and Western Carolina Railway | 6th | - | 900-905 | - | to ACL 424A-429A |
| Chicago, Burlington and Quincy Railroad | 10 | 3 | 163A-166A, 167A, C-169A, C | 167B-169B | |
| Chicago Great Western Railway | 4th | 20th | 153-156 | 104B, 105D-112D, 113B, D-116B, D, 116E, F, G | |
| Chicago and North Western Railway | 72 | 22nd | 4067A, C-4102A, C | 4067B-4084B, 4091B-4094B | |
| Chicago, St. Paul, Minneapolis and Omaha Railway ("Omaha Road") | 12 | - | 6500A, C-6505A, C | - | |
| Chicago, Rock Island and Pacific Railroad | 31 | 17th | 100-127, 675-677 | 100B-109B, 120B-123B, 675B-677B | 675–677 passenger trains |
| Chesapeake and Ohio Railway | 94 | 54 | 7000-7093 | 7515-7546, 8500-8506 | 8500 passenger trains (with FP7) |
| Clinchfield Railroad | 15th | 11 | 806-820 | 853-863 | |
| Colorado and Southern Railway | 6th | 6th | 700A, D-702A, D | 700B, C-702B, C | |
| Delaware, Lackawanna and Western Railroad | 9 | 6th | 611A, C, 631A, C, 632A-636A | 611B, 632B-636B | |
| Denver and Rio Grande Western Railroad | 43 | 40 | 5481, 5551/4, 5571 / 4-5761 / 4 | 5552/3, 5572 / 3-5742 / 3, 5752, 5762 | |
| Erie Railroad | 6th | 6th | 711A, D-713A, D | 711B, C-713B, C | 713 ABBA trains originally numbered 807A-D |
| Ferrocarriles Nacionales de México | 22nd | 16 | 6310-6318, 6319A-6327A, 6335-6338 | 6319B-6334B | |
| Fort Worth and Denver City Railway | 6th | 6th | 750A, D-752A, D | 750B, C-752B, C | |
| Gulf, Mobile and Ohio Railroad | 4th | 10 | 811B, 812A, B, 813A | B65-B74 | |
| Great Northern Railway | 63 | 49 | 268A-270A, 271A, B, 273A, B-275A, B, 280A-281A, 307A, C-309A, C, 311A, C-317A, C, 350A, 360A, 364A, C-365A, C, 444A, D – 456A, D (even numbers), 460A, D, 462A, D – 468A, D (even numbers) | 268B – 270B, 280B – 281B, 307B – 309B, 311B – 317B, 350B, 360B, 364B – 365B, 444B, C – 456B, C (even numbers), 458C, 460B, C, 462B, C – 468B, C ( even numbers), 500B – 504B | 350–365, 500 passenger trains |
| Kansas, Oklahoma and Gulf Railway | 4th | 2 | 751-754 | 755B-756B | |
| Kansas City Southern Railway | 11 | 14th | 59D (twice), 70A, C-71A, C, 72A, D-73A, D, 74A | 33B, 59B, C, 70B-71B, 72B, C-75B, C, 78C (second) | |
| Kansas City Southern ( Louisiana and Arkansas Railway ) | 7th | 8th | 32A-33A, 74D, 75A, D-76A, D | 32B, 76B, C-78B, C, 79B | |
| Louisville and Nashville Railroad | 67 | 17th | 800-856, 844-849, 900-903 | 703-716, 900-902 | |
| Lehigh Valley Railroad | 8th | 6th | 560-574 (even numbers) | 561–571 (odd numbers) | |
| Mexican Ministry of Communications and Public Works ("SCOP") | 2 | - | 23037-23038 | - | |
| Milwaukee Road | 68 | 50 | 48A, C-50A, C, 68A, C-79A, C, 84A, D-85A, D, 86A, 87A, C-89A, C, 106A-108A, 109A, C-111A, C, 113A, C- 121A, C | 48B-50B, 68B-79B, 84B, C-85B, C, 87B-105B, 109B-111B, 113B-121B | 90B – 105B passenger trains (with FP7) |
| Missouri-Kansas-Texas Railroad | 16 | 8th | 208A, C-211A, C, 226A, C-229A, Cv | 208B-211B, 121B-124B | |
| Missouri Pacific Railroad | 26th | 10 | 577-594, 619-626 | 587B-594B, 629B-630B | |
| Missouri Pacific Railroad ( International-Great Northern Railroad ) | 14th | 2 | 595-606, 617-618 | 595B-596B | |
| Missouri Pacific Railroad ( St. Louis, Brownsville and Mexico Railway ) | 10 | - | 607-616 | - | |
| Minneapolis and St. Louis Railway | 8th | - | 150A, C, 250A, C, 350A, C, 151A, C | - | |
| Nashville, Chattanooga and St. Louis Railway | 23 | 8th | 809-831 | 912-919 | |
| Northern Pacific Railway | 45 | 34 | 6007A, D-6020A, D, 6500C -6502C, 6507A, C-6513A, C | 6007B, C-6020B, C, 6050B, 6510B-6513B, 6550 | 6000 cargo, 6500 passenger trains |
| New York Central Railroad | 238 | 56 | 1636-1873 | 2420-2474, 2446 (second) | |
| Pennsylvania Railroad | 123 | 76 | 9640A-9676A, 9690A-9699A, 9764A-9831A, 9872A-9879A | 9547B – 9555B (odd numbers), 9640B – 9647B, 9648B – 9660B (even numbers), 9667B – 9676B, 9764B – 9818B (even numbers), 9832B – 9858B (even numbers), 9872B – 9878B (even numbers) | |
| Reading Company | 18th | 6th | 266-283 | 266B-271B | |
| Richmond, Fredericksburg and Potomac Railroad | 10v | 10 | 1101-1110 | 1151-1160 | |
| St. Louis-San Francisco Railway | 22nd | 22nd | 5018-5039 | 5118-5139 | |
| Soo Line | 6th | 2 | 212A, B-214A, B | 502B, 503B | 500 passenger trains (with FP7) |
| Soo Line Wisconsin Central Railway | 20th | 4th | 2201A, B-2203A, B, 2224A, B-2230A, B | 2201C-2204C | |
| Southern Railway | 63 | 44 | 4207-4269 | 4385-4428 | |
| Southern Railway ( Cincinnati, New Orleans and Texas Pacific Railway ) | 7th | 24 | 6114-6120 | 6160-6183 | |
| Southern Railway ( Alabama Great Southern Railroad ) | 6th | 3 | 6714-6719 | 6756-6758 | |
| Southern Pacific Company | 250 | 220 | 6140A, D-6169A, D, 6240-6423, 6440-6445 | 6140B, C-6169B, C, 8140-8285, 8290-8303 | |
| Southern Pacific ( Texas and New Orleans Railroad ) | 44 | 16 | 338-381 | 538-553 | |
| Spokane, Portland and Seattle Railway | 4th | - | 803-806 | - | to BN 9754,9756,9758,9760 |
| St. Louis Southwestern Railway ("Cotton Belt") | 26th | 17th | 925–975 (odd numbers) | 926–958 (even numbers) | |
| Texas Mexican Railway | 2 | - | 800A, B | - | |
| Texas and Pacific Railway | 83 | 35 | 1500-1582 | 1500B-1534B | |
| Union Pacific Railroad | 18th | 36 | 1464-1465, 1466 (twice), 1467-1480 | 1464B, C, 1466B, C (twice), 1468B, C – 1494B, C (even numbers), 910B, C | 910B, C with FP7 |
| Wabash Railroad | 96 | 9 | 1100A-1108A, 1140A-1154A, 1165A-1188A | 1100B-1108B | |
| Western Maryland Railway | 26th | 14th | 53-66 | 53B – 65B (odd numbers), 231B – 243B (odd numbers) | |
| Western Pacific Railroad | 24 | 26th | 913A, D-924A, D | 804B-805B, 913B, C-924B, C | 800 passenger trains (with FP7) |
| Total | 2285 | 1432 |
Units built at General Motors Diesel Canada
| Railroad | Number A unit |
Number of B unit |
Company numbers A unit |
Road numbers B unit |
Remarks |
|---|---|---|---|---|---|
| Canadian National Railways | 58 | 18th | 9028–9142 (even numbers) | 9029–9063 (odd numbers) | |
| Canadian Pacific Railway | - | 29 | - | 4424-4448, 4459-4462 | Ordered with FP7 |
| Wabash Railroad | 22nd | - | 1155, A-1164, A, 1189, A | - | Ordered for use in Canada |
| Total | 80 | 47 |
Preserved copies
In November 2009, almost 50 preserved F7 locomotives were known. Most of them are in museums, some of them are still operational.
literature
- Jerry A. Pinkepank: The Second Diesel Spotters Guide . 4th edition, Kalmbach Publishing Co. Milwaukee, 1980, ISBN 0-89024-026-4 .
- Brian Solomon: EMD Locomotives . Voyageur Press, MBI Publishing Company, Minneapolis MN 2006, ISBN 978-0-7603-2396-0 .
