0.061 or larger ROUND weed whacker (string trimmer) line. Works fine for 5-10
years at a time, even in harsh MN winters and summers. Used it for decades. No
reason to stop now. :)
Don't use the "star profile" line or the various "edged" lines, as they will
cut your tree limbs over time. :)
The round line is harder to find, but it's still available.
Good luck,
--Kirk, NT0Z Rochester, MN My book, "Stealth Amateur Radio," is now available
from www.stealthamateur.com and on the Amazon Kindle (soon)
On Wednesday, February 15, 2017 10:15 PM, Grant Saviers
<grants2@pacbell.net> wrote:
7x19 wire rope will probably win by sawing off the limb. 1/8" is plenty
strong enough and you might consider stainless. 400# SWL 5x safety
factor. Note the recommend sheave diameter is about 3.5" so there is a
potential fatigue factor bent around a small branch. If you shoot the
line into the limb crotch and keep the line close to the trunk it's not
clear to me what the source is for the abrasion.
I've used a pulley on the end of the rope thru the branch and never had
it abraded since the tree grows around the rope before that happens and
the pulley is permanently up there. I use marine pulleys SS plus ball
bearings (plastic), about $13. The die cast closeline junk ones fail
quickly.
btw re wire rope: Never saddle a dead horse with wire rope clips, and
Nicopress crimped sleeves are better.
Grant KZ1W
On 2/15/2017 16:22 PM, NC3Z Gary wrote:
> I have been using what I thought was high quality UV resistant Dacron to
> support my inverted L's. But the problem is as it runs through the
> support pine trees it comes into contact with several limbs and branches
> and it has been abraded to the point of failure in about 6 months. This
> has happened a couple of times.
>
> Any good products out there that is more resistant to limb abrasion?
>
>
> Gary Mitchelson
> NC3Z/4 Pamlico County, NC FM15
>
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