[Top] [All Lists]

Guy Line Tension

To: <>
Subject: Guy Line Tension
From: (Roger D. Johnson)
Date: Mon, 16 Dec 1996 13:21:58 +0000
Roger L. Elowitz wrote:
> Hi Guys,
> I know that this just might sound a bit silly with all you big guns and tall
> towers but... who better to turn to for advice?
> I just put up a 3-section (9-ft ea) push up mast on the top of my garage
> with the lowest section bracketed to the side of the house for just about
> it's full 9-foot length. The second and third sections are guyed in three
> directions with 1/8th inch diamond braid dacron Kevlar core line that is
> supposed to be rated at 450# tensile strength.
> On the top of the mast is a Ham-M rotor, a Cushcraft A-144-11 2m beam, about
> 4 feet above that is a 23-el ATV beam and way above that (about 8-ft) is an
> AEA isopole for two meters.
> Now the question I have has to do with guy line tension. My friend, who is
> an Industrial Arts teacher and who helped me install the set-up, says that
> the guy lines which run down to the garage roof at a steeper angle than the
> guys to the house roof- need a greater amount of tension to keep the mast
> vertical. This he claims is because of the shallower angle naturally
> requires more tension.
> Well, I have a bad track record when it comes to doubting people, (BETTER
> stainless IS NOT MAGNETIC) but, I had the opinion that the angle of the guy
> to the tower should make NO DIFFERENCE when it comes to tensioning them and
> that I should aim for equal tension in all the lines.
> To be on the safe side..... I left the guys with the steeper angle much
> tighter than the others. Of course, I don't have a tension gauge so I really
> have no idea if I am anywhere near the maximum rating on this guy material.
> I do know that the mast is as vertical as I can possibly make it.
> Your thoughts on this subject- on the reflector, would be much appreciated
> as perhaps this subject applies equally to guying any structure with any
> material.
> Thanks all,
> Roger, (easily snookered) K2JAS
> --
> FAQ on WWW:     
> Submissions:    
> Administrative requests:
> Problems:       
> Sponsored by Akorn Access, Inc & KM9P
I have no idea about guy tension but all that stuff above the rotator
surely exceeds the allowable side load unless you have some sort of
rotating guy ring. 

Happy Holidays.....Roger

FAQ on WWW:     
Administrative requests:
Sponsored by Akorn Access, Inc & KM9P

<Prev in Thread] Current Thread [Next in Thread>