Hi Scott,That's certainly different from the type of lifeline I have used.In
the one I used, the tower had a steel cable that was about 8 inches from the
face of the tower and it ran from the top to about 10 feet from the ground. It
was under a bit of tension and if I recall, had a heavy duty spring on the
bottom that allowed some give in the cable while climbing. The top was a very
heavy steel bar bolted horizontally to the top of the tower.There were also
steel standoffs about every 20 feet to keep the cable evenly spaced from the
tower face.So you climbed up 10 feet, attached the "grab" to the cable and went
up. The standoffs were designed to allow the grab to slide past going up and
down.The was before the days when people wore fall arrest lanyards; the grab
was attached to your positioning belt right in front.The grab slid freely up
and down the cable until you leaned back..then it grabbed the cable.This was, I
believe, professionally installed. The tower was a big 150 ft windmill type
tower that had a ladder installed on one face.I imagine this would work with a
fall arrest lanyard the same way as long as the lanyard was short so as to not
get in the way.Now this was back in the early 80s. I wonder if these are still
used?I also used a similar one on a 60 foot monopole installed on a 300 foot
building for a FM radio antenna. 73,Gary K9GS
-------- Original message --------From: K9MA <k9ma@sdellington.us> Date: 9/6/20
10:59 PM (GMT-06:00) To: towertalk@contesting.com Subject: Re: [TowerTalk]
How to Clip on with a Fall Arrest Lanyard I normally use double fall arrest
lanyards from the dorsal ring, one of which is always attached to the tower.
However, if I'm going to be making multiple trips, I'll install the lifeline.
Installing it, of course, requires one trip with the double lanyards. The
lifeline attaches to something solid near the top of the tower, like a shackle
through a corner of the top plate. I tie down the bottom end just to keep some
tension on it so the rope grab doesn't pull it up when I climb. I attach the
front D ring of my harness to the rope grab with a short fall arrest lanyard.
Once the lifeline is in place, I can dispense with the fall arrest lanyards,
until it's time to take it down. The rope grab will follow me up the tower, but
I usually push it ahead to reduce the fall distance. I have to manually lower
it every step or two, but that's still easier and faster than the gorilla hooks
on the double lanyards. The rope grab is also a lot lighter than the lanyards
and gorilla hooks.If I'm just making one or two trips up the tower for a small
job, of course, it's not worth the trouble of putting up the lifeline. It's
polypropylene, so it can't be left up permanently. Even though polypropylene
isn't all that strong, it is so big that it's rated for 6,000 pounds.If I'm
going to be working above the end of the lifeline, like standing on the top
plate, I have to use the double fall arrest lanyards.By "fall arrest lanyard",
I mean one designed to break a fall sort of gently, with stitching that breaks,
or some other mechanism. I haven't tried it, but I suspect such an arrested
fall is likely to be painful. But not as painful as hitting the ground.Lifeline
<https://www.amazon.com/gp/product/B01HJFTHRU/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1>Rope
Grab
<https://www.amazon.com/gp/product/B00CPMZB7I/ref=ppx_yo_dt_b_asin_title_o07_s01?ie=UTF8&psc=1>73,Scott
K9MAOn 9/6/2020 8:47 PM, Kim Elmore wrote:> Would you mind being a bit more
detailed about this? What it is, > exactly, and how you manage it? I think I
know, but I want to be > certain. Also, if there's a permanently-installed a
safety line on a > tower, what's required to properly use it?>> Kim N5OP>> On
9/6/2020 4:17 PM, K9MA wrote:>> I’ve been using a 5/8 inch lifeline and a rope
grab. It takes one >> trip with the gorilla hooks to put it up, and another to
take it >> down, but all the other trips are much easier.>>>> 73,>> Scott
K9MA>>>> ---------->>>> Scott Ellington>>>> --- via iPad>>>>> On Sep 6, 2020,
at 12:05 PM, Dick Green WC1M <wc1m73@gmail.com> wrote:>>>>>> 4. All this
further convinces me that a safety cable is the best way >>> to climb a tower.
I plan to install one on my Rohn 55 tower provided >>> I can find one with
enough clearance to pass through the three TIC >>> rings on my tower.>>
_______________________________________________>>>>>>>>
_______________________________________________>> TowerTalk mailing list>>
TowerTalk@contesting.com>>
http://lists.contesting.com/mailman/listinfo/towertalk-- Scott
K9MAk9ma@sdellington.us______________________________________________________________________________________________TowerTalk
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