EMD Model F7

The F-unit roster text by Jim Sandrin, from BRHS Bulletin #4,
THE GRAYBACKS ©1982 Burlington Route Historical Society

		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.
Click on diagram to see larger size.

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.

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.