F unit couplers

[train18393]

Does anybody have an oppinion on what couplers would be correct to couple a set of  NYC freight  F7 ABAs?.

I was contemplating H couplers between the units, but then thought that might be more approriate for passanger versions then maybe the standard coupler would be in order. The pictures that I have access to are not clear enough to figureout when they typically went with the Hs over the standard Jenny style. I read the pages in my 1947 Locomotive Cyclopedia on the type Hs, but even they only spoke in generics. I have many NYC books with alot of photographs, but no good views of the couplers. Any oppinions on this subject would be appreciated

Thanks

Paul---Dayton and Mad River (model) RR

[henry6]

Some roads allowed for all units to be standard couplers so all units were interchangeable.  Others, like the DL&W, had a few A/B combinations that were semi-permenantly coupled. 

[daveklepper]

Are you certain that it was F7A's and F7B's that were permenantly coupled?  Possibly you may be thinking of FT's and F2's?   My impression was that from F-3's on, all EMD's units had couplers and not drawbars on  both ends.

[rrboomer]

Most railroads ordered their freight units (which NYC F7's were) with the E (freight) couplers. The passenger F3  units most likely got the the type H tightlock coupler. 

I was unable to locate any NYC/EMD F7 builder photos doing a quick search. I did locate some GN and RI builder shots for their F-7's and both had type E, even the RI FP7 had E type couplers.  Knowing that the type E is less expensive, I feel it would be a good bet the NYC got them too.