EMD model F7
(The F-unit roster text by Jim Sandrin, from BRHS Bulletin #4, THE GRAYBACKS ©1982 Burlington Route Historical Society) Click on photos and diagrams to see larger size.
In May 1950, the CB&Q proper acquired its only F7's — 10 A's and three B's. These units had a 36" dynamic brake fan ahead of the four radiator fans, thus differentiating them from the Phase IV F3's. Nine of the F7's were numbered as three-unit A/B/A sets 167-169, while the other four A's were 163A through 166A.
With delivery of the F7's, the last two four-unit F3 sets were broken up and reassembled with the single F7 A-units to form three unit F3-A/F3-B/F7-A sets 163 through 166. The renumbering went as follows:
CB&Q F7 #169A in Aurora, IL, probably mid-1960s. You can see the original ABA unit below. (courtesy Jan Kohl/Castle Graphics)
137A to 163C 138A to 165C 137B to 163B 137B to 165B 137C to 164B 138C to 166B 137D to 164C 138D to 166C The units in these F3-F7 sets matched well. The only outwardly visible difference between them being in the rooftop dynamic brakes. From the ground, the 163-166 sets appeared identical to the "pure" F7 sets, 167-169.
In August 1950, subsidiaries Colorado & Southern and Fort Worth & Denver both acquired their first F-units—A/B/B/A F7 sets decked out in all the stock Q options but numbered and sublettered for their owners. The C&S sets were 700 through 702, while the FW&D units were 750 through 752.
The C&S and FW&D units turned out to be the Burlington's last F-unit purchases. In 1951 the Q switched to the GP7 (two full years after its introduction!) and never bought another carbody-type unit.
FW&D's first F7 set, #750, seen here at Lincoln on their first run on Aug 20, 1950. (Al Holck) One of the last of the three F7 sets on the CB&Q, #169 prepares to pull a westbound out of Clyde on Feb 9th, 1952. (Bruce Black) The final F7 set to go to the C&S, seen here in Lincoln, NE in 1952. The motors have recieved a letter designation since the drawbars have been replaced with couplers. (Al Holck) CB&Q
Number Blt.Date Serial # Description Disposition Disp.Date Notes 163A 5/50 9692 1 unit of ABA set #163 Traded in on SD45 2/69 6 164A 5/50 9693 1 unit of ABA set #164 Traded in on SD45 2/69 6 165A 5/50 9694 1 unit of ABA set #165 Traded in on SD45 2/69 6 166A 5/50 9695 1 unit of ABA set #166 Traded in on SD45 2/69 6 167A 5/50 9696 1 unit of ABA set #167 Traded in on SD45 2/69 167B 5/50 9702 1 unit of ABA set #167 Traded in on SD45 2/69 167C 5/50 9697 1 unit of ABA set #167 Traded in on SD45 2/69 168A 5/50 9798 1 unit of ABA set #168 Traded in on SD45 8/70 9 168B 5/50 9703 1 unit of ABA set #168 Traded in on SD45 1/69 168C 5/50 9799 1 unit of ABA set #168 Traded in on SD45 8/70 9 169A 5/50 9700 1 unit of ABA set #169 Traded in on SD45 2/69 169B 5/50 9704 1 unit of ABA set #169 Traded in on SD45 2/69 8 169C 5/50 9701 1 unit of ABA set #169 Traded in on SD45 2/69
C&S
Number Blt.Date Serial # Description Disposition Disp.Date Notes 700A 8/50 11317 1 unit of ABA set #700 Traded in on SD40 5/68 700B 8/50 11323 1 unit of ABA set #700 Traded in on SD40 5/68 700C 8/50 11324 1 unit of ABA set #700 Traded in on SD40 4/68 700D 8/50 11318 1 unit of ABA set #700 Rebuilt to F9-Am 3/59 10 701A 8/50 11319 1 unit of ABA set #701 SFS to PECO 4/68 701B 8/50 11325 1 unit of ABA set #701 SFS to PECO 4/68 701C 8/50 11326 1 unit of ABA set #701 Traded in on U30C 7/68 701D 8/50 11320 1 unit of ABA set #701 Traded in on U30C 5/68 702A 8/50 11321 1 unit of ABA set #702 Traded in on SD40 5/68 702B 8/50 11327 1 unit of ABA set #702 Traded in on SD40 5/68 702C 8/50 11328 1 unit of ABA set #702 Traded in on SD40 5/68 702D 8/50 11322 1 unit of ABA set #702 Traded in on U30C 7/68
FW&D
Number Blt.Date Serial # Description Disposition Disp.Date Notes 750A 8/50 11329 1 unit of ABA set #750 Rebuilt to F9-Am 3/59 11 750B 8/50 11335 1 unit of ABA set #750 Traded in on SD40 5/68 750C 8/50 11336 1 unit of ABA set #750 Traded in on U30C 8/68 750D 8/50 11330 1 unit of ABA set #750 Traded in on SD40 5/68 751A 8/50 11331 1 unit of ABA set #751 Traded in on U30C 8/68 751B 8/50 11337 1 unit of ABA set #751 Traded in on U30C 8/68 751C 8/50 11338 1 unit of ABA set #751 Traded in on U30C 8/69 751D 8/50 11332 1 unit of ABA set #751 Traded in on U30C 8/70 752A 8/50 11333 1 unit of ABA set #752 Traded in on SD40 5/68 752B 8/50 11339 1 unit of ABA set #752 Traded in on U30C 8/68 752C 8/50 11340 1 unit of ABA set #752 Traded in on SD40 5/68 752D 8/50 11334 1 unit of ABA set #752 Traded in on SD40 5/68 Footnotes
6. F-3 number series 137 through 138 were broken up and renumbered in 1950 and combined with 4 F-7's to produce F-3-7 series 163 through 166. The F-3 series 137, for example, became F-3-7 163, using an F7 (later renumbered 163A) and F-3 137 (using the ''A" and " B" units), and F-3-7 164, using an F-7 and F-3 137 ("C" and "D" ), and so on.
8. Modified with a square hostler window and controls added
9. 168A and 168C made it into the BN era. 168A was assigned BN #796, but still carried it's Q number when traded in 5 months after the merger.
10. 700D was destroyed in a wreck at Broomfield, CO on 9/22/58. The unit was then sent to EMD where it was rebuilt to an F9-Am in 3/59.
11. 750A was destroyed in a wreck at Chugwater, WY on 9/17/58. The unit was then sent to EMD where it was rebuilt to an F9-Am in 3/59.
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