Southern Car & Foundry Coupler attachment

Bill Welch

I spent my hobby time this morning drilling and tapping the five tank
car center sills and just finished installing the couplers. It is
very clever the way Jon designed the couple box to stay in scale with
some of the coupler base exposed yet fit within the constraints of
the box. I used long nylon #72 screws that will be eventually
trimmed. My tap resulted in the screws being a little loose, so I did
not run the tap all the way through, meaning the last few turns of
the screws have more bite. The covers have a flange intended to match
that on the center sill but they are so thin the do not line up.
Tomorrow I will shim them all to get better alignment. There is very
little room for the coupler to move laterally and I cannot tell if
the centering spring really has any effect at all. In a very tight
curve things could go awry. Those of us that have built the little
PSC Van Dyke tank car as standard gauge following Richard H's RMC
article in the 1990's will remember that coupler arrangement has very
little lateral movement also.

All in all things went well

Bill Welch
2225 Nursery Road; #20-104
Clearwater, FL 33764-7622

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