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Re: [TowerTalk] polyrod

To: "Jim Lux" <jimlux@earthlink.net>,"Roger K8RI on Tower" <k8ri-tower@charter.net>,"Tom Rauch" <w8ji@contesting.com>, "RICHARD BOYD" <ke3q@msn.com>,<towertalk@contesting.com>, "Ken Claerbout" <K4ZW@Staffnet.com>
Subject: Re: [TowerTalk] polyrod
From: "Michael Tope" <W4EF@dellroy.com>
Date: Sat, 30 Apr 2005 20:11:45 -0700
List-post: <mailto:towertalk@contesting.com>
I believe for the same tensile load, phylistran stretches more than the 
equivalent (same load
rating) EHS steel guy. Kurt K7NV did some really interesting analysis on 
this:

http://k7nv.com/notebook/towerstudy/towerstudy1.html

And here is some specific information comparing the properties of steel, 
kevlar, and fiberglass
guy material:

http://k7nv.com/notebook/topics/guycable.html

73 de Mike, W4EF.................................................


----- Original Message ----- 
From: "Jim Lux" <jimlux@earthlink.net>

> From: "Roger K8RI on Tower" <k8ri-tower@charter.net>
>> Why not just use one of the Kevlar cables such as Phylistran, or the one
>> AES sells just called Kevlar guy line?
>>
>> Nothing is perfect, but so far I like the light weight and easy handeling
>> of the Kevlar lines.  Does Polyrod have an advantage over this?


> What's the stretchy-ness of Polyrod vs aramid (Phillystran, Kevlar, etc.) 
> vs
> steel?  That has an effect on the overall performance.
>


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