[TowerTalk] Rohn Info
Stan or Patricia Griffiths
w7ni@teleport.com
Thu, 10 Aug 2000 22:01:20 -0700
I have heard of two reasons for using end sleeves on preforms.
1. On a long length of guy wire where several inches of ice may build up, as
the ice melts, chunks of it several feet long may come sliding down the guy wire
at break-neck speed and as they hit the exposed ends of your preform at the
bottom, unravel it . . . If you live in a "no ice" area, this should not be a
probem for you.
2. One big advantage of using preforms is that you can install them with your
bare hands. This implies you can remove them with your bare hands also . . . or
with maybe a little help from a pocket knife to get them started. This makes
your tower vulnerable to a little kid with a pocket knife . . . End sleeves are
driven into place and need some work to remove them. Not foolproof, but then
what tower is absolutely foolproof? This is a good reason to at least use them
on the preforms that can be easily reached from the ground.
I have some 1/4" end sleeves in stock for $1.67 each, plus shipping. Preformed
Line Products part number GC-65136. Just one per guy wire would be pretty cheap
insurance, I'd say.
Stan
w7ni@teleport.com
Gary and Jane Nieborsky wrote:
> Had an interesting discussion with the PLP rep yesterday. I asked him why
> Rohn insists on end sleeves for PreForms. His answer: "Heck if he knew".
> End sleeves add nothing to the equation. He supposed (off the record) that
> Rohn does that because when they first started allowing Preforms as an
> accepted method the engineer in charge insisted on them since he didn't
> trust them to last. I never use them. I know.....the LXC prime
> directive.....but I don't think he uses them either.
>
> Anectdotal evidence of Preform performance: we had a logging truck miss the
> curve just west of St. Maries, ID, last week. Two 10M alumaweld downguys
> snagged the rear axle as it went over the edge and kept the truck from going
> into the St. Joe river. The Preforms never slipped. The truck was hanging
> by the guys when we got there......logs and all.
>
> Gary K7FR
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