I use nylon rope all the time for tower work and for supporting temporary
antennas and I have never seen the stretch that you describe Roger.
Actually I like a little stretch when installing large antennas as it allows
for a little height adjustment while on the tower. According to the
internet, nylon rope stretched 10-15% when under a load equal to 30% of it's
breaking strength.
John KK9A
To: towertalk@contesting.com
Subject: Re: [TowerTalk] Temporary guys
From: K8RI on TT <k8ri-on-towertalk@tm.net>
Date: Thu, 31 Mar 2011 00:27:02 -0400
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
On 3/30/2011 6:13 PM, john@kk9a.com wrote:
> I am curious how temporary guys could stretch so much to lay a tower on
> its
> side, perhaps the guy anchors were very far away? The Trucker's Hitch is
> great advice, I have used this knot to for securing tower or reels of
> hardline when transporting them home.
When experimenting with a phased array I used Nylon rope to guy a
temporary 40 meter vertical made from relatively light weight steel
masting (the old TV masting). In 24 hours that antenna was leaning a
good 60 degrees from vertical. You could walk over and take hold of the
top.
Nylon does not make even a good temporary solution to holding an
antenna. However after it's been stretch out in the elements for a
couple of weeks there is very little stretch left. OTOH I still would
not trust it.
73
Roger (K8RI)
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