A seventies slug in Carlsbad…(Photo of the week)

Here is a picture of an F7B in Carlsbad, New Mexico in 1978.

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F7B slug in Carlsbad, 1978 ©B Smith photo

On a “slug” unit, the prime movers have been removed and replaced with heavy weight, such as blocks of cement.   Just the traction motors remain and they get power from another locomotive.  They increase the tractive capacity of the accompanying locomotive.

These slugs would have passed thorough Roswell prior to the 1990s.  F units slugs were no longer used by the 1990s.

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2 thoughts on “A seventies slug in Carlsbad…(Photo of the week)

  1. Thanks for this great shot. I’m building one of these to go along with my CF 7 and that’s just the underbody detail I needed to see.

    Like

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