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.

CB&Q F7 #169A in Aurora, IL, probably mid-1960s. You can see the original ABA unit below. (courtesy Jan Kohl/Castle Graphics)
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:

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.

Content 2007 BRHS