[TowerTalk] Pull Down Cable Issues

K0DAN k0dan at comcast.net
Wed Feb 8 18:51:27 PST 2012

I am doing this from memory, but I believe the factory specs state to have a 
safety loop of cable (w/ clamps) snaked through the the compression spring 
turnbuckles so that if the turnbuckle was to fail, the loop of wire rope 
would be your "safety net" in the event of hardware failure.

The LM470 docs are available online, but if you cannot visualize the safety 
cable (same thing as is recommended for guy anchors) I'll send you a scan of 
the page from the manual.

Knock on wood that you didn't have any serious losses from this failure!



-----Original Message----- 
From: Mike
Sent: February 08, 2012 05:25 PM
To: 'Bill Gaines' ; towertalk at contesting.com
Subject: Re: [TowerTalk] Pull Down Cable Issues

Never happened to me hi hi.

Looks like you have thought of everything through okay, and yes use another 
person to tightly wind the cable on the drum.

I use three clamps at the bottom of my cable after the turnbuckle, remember 
that the spring should be completely compressed (maximum tension) when in 
the relaxed position when you put the clamps back on.

Mike, K6BR

-----Original Message-----
From: towertalk-bounces at contesting.com 
[mailto:towertalk-bounces at contesting.com] On Behalf Of Bill Gaines
Sent: Wednesday, February 08, 2012 2:52 PM
To: towertalk at contesting.com
Subject: [TowerTalk] Pull Down Cable Issues

While walking the dogs in the back yard this afternoon I noticed a pile of 
cable inside the base of my LM-470D tower. The pull down cable which 
terminates in a turnbuckle at the bottom of the top section of tower has 
worked itself loose and came all the way down. What I am thinking about in 
fixing what has happened is this: I wait for a time with absolutely no 
breeze. Slowly lower the tower as I normally would do. It is simply resting 
on the raising cable so gravity should do it�s thing and cause it to slide 
down as it normally would. My question is this. Shouldn't I have someone 
with me to make sure the now piled up lowering cable gets wound up on the 
drum as it normally would do? Anything I am overlooking?

Surely I am not the first one this has happened to? I also know now to wire 
the turnbuckle to insure it doesn�t happen again. I just want to be certain 
there isn�t something I am overlooking before I do it.

Thanks in advance

Bill AD8P


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