Frisco FP7 - Multiple Unit Operations?

Discussion in 'FP7' started by yardmaster, Jul 26, 2012.

  1. yardmaster

    yardmaster Administrator Staff Member Administrator Frisco.org Supporter

    Folks -
    I started wondering whether the FP7s on the Frisco were set up for M.U. operations.

    Photos posted by Ken Wulfert from Enid, OK certainly confirm that they were:

    http://www.frisco.org/vb/showthread.php?3544-SLSF-FP7-s-Enid-Negative-Collection&highlight=FP7

    Does anyone know of dates when the FP7 units would have been set up as such? I don't believe they were delivered this way.

    Perhaps it coincided with the late 50s shoppings that added a Mars light and removed skirting (http://www.frisco.org/vb/showthread.php?4283-FP7-Mars-Lights-and-Fuel-Tank-Skirting)

    Best Regards,
     
  2. meteor910

    meteor910 2009 Engineer of the Year Staff Member Frisco.org Supporter

    Chris - I can't find it in writing, but I'm quite sure the Frisco FP7's were set up for m/u operations right from the beginning. It wouldn't make any sense for them not to be. The idea was to have an F-unit that could run in passenger service either alone, or mated up with a steam line F9B, or with an E-unit, or to run in freight service with any of the F3's, F7's, F9's, GP7's, FA's or FB's, all of which had m/u.

    Ken
     
  3. Karl

    Karl 2008 Engineer of the Year Frisco.org Supporter

    The early diagram books are silent in this regard. However, ETT, May 20, 1951 shows in the Bridge Class ratings and in the Tonnage Class ratings that the Dec 1950 - Feb 1951 built FP-7's were indeed run in multiple with other covered wagons.
     

    Attached Files:

  4. klrwhizkid

    klrwhizkid Administrator Staff Member Administrator Frisco.org Supporter

    All F units, from the beginning FT series, produced by EMC (later EMD) were set up for mulitiple unit lash-ups. That was their design intent, to replace a single steam locomotive and its maintenance costs with multiple lashed diesels producing the same or greater tractive effort that were less dependent on continuous maintenance. As result, they were usually sold in sets; ABBA, ABA, AA, AB, etc.

    E units were also so equipped from the beginning.
     
    Last edited by a moderator: Jul 26, 2012
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  5. TAG1014

    TAG1014 Frisco.org Supporter Frisco.org Supporter

    Also E-units, FA's, F-3A'a, F-7A'a and the FP-7's were originally only set up for multiple operation on their blind ends.

    Tom G.
     
    Last edited by a moderator: Jul 27, 2012

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