swaged fittings for guywires

[John Brosnahan]

>My local rigging and cable supplier says one swaged fitting per termination
>is plenty. What say, reflectorites? Is this "logger engineering" or is one
>really plenty? At 25 cents a sleeve they are cheap enough to put on
>multiple sleeves, but if this is truly overkill, I'll pass.

I disagree with the one is enough, although my reference material is
buried deep enough that I haven't found it the last time or two I looked.

The original swaging tool stuff is from Nicopress and about 20 years
ago I wrote them about using the oval sleeves in EHS 1x7 guy strand.
They said that the sleeves are designed to work with aircraft cable--where
one is enough, and that they would test them on 1x7 EHS for me.  A month
or so later they sent me the data.  It showed that one sleeve always failed
before the strand failed.  Two sleeves usually held and the strand failed
first, but they had one exception to that case--and to be absolutely sure
it took three sleeves.

My feeling is that two are probably enough and the failure of one two-sleeved
connection was at a test strength of almost the strand's strength.

Unfortunately, I don't recall if they had just run a splice with the sleeves
or if 
they were used with a loop around a thimble or insulator.  Would make a 
difference.

So my feeling is that two should be used at a minimum and three should be
used if you were a belt with your suspenders.

73  John  


John Brosnahan  
La Salle Research Corp      24115 WCR 40     La Salle, CO 80645  USA
voice 970-284-6602            fax 970-284-0979           email broz@csn.net


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