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Re: [TowerTalk] Which type of cable for a crank-up tower?

To: "Dan Levin" <>, <>
Subject: Re: [TowerTalk] Which type of cable for a crank-up tower?
From: "K0DAN" <>
Date: Thu, 1 Dec 2011 19:08:13 -0600
List-post: <">>
Since you can't find the manufacturer's data, I suggest you do some web 
browsing and find rigger's supply outfits....on those sites you'll be able 
to find the working load, breaking strength, etc., of various types of wire 
rope. I think you are in the right ballpark with 5/16" 7x19 for most 3-4 
section 70' amateur service towers, but some research is in order. If you 
can get the weight & dimensions of the tower sections, you might compare it 
to similar commercial towers whose data is more readily available. If you 
are in a salty environment, then you'll want to pay as much attention to the 
longevity of the wire rope as you do of its physical characteristics. 
Initial and periodic applications of Pre-Lube will also go a long to 
extending the cable's life.

GL es 73


-----Original Message----- 
From: Dan Levin
Sent: December 01, 2011 04:00 PM
Subject: [TowerTalk] Which type of cable for a crank-up tower?

Of course, if I knew who made it I would just get the manual and do what 
they say.  But I don't know who made it, so...

I have an unidentified 65' crank-up tower, believed to be of English origin. 
It needs to be recabled.  The existing (original) cable appears to be 5/16", 
but it might be 8mm or even 7mm (I am not where the tower is, so I can't 
measure it exactly).  Definitely bigger than 1/4".  The tower lives in a 
very salty, island climate.

I am trying to figure out what type of cable to use - not which size, but 
which material and construction.

The easiest thing to find that seems appropriate is 5/16" 7x19 galvanized 

But, I have read that these towers usually use 6x19 LC (linen core) - which 
I can find in plain steel, but not in galvanized.

1) Is galvanized the way to go in this situation?

2) Any sense of which construction is most appropriate?  I assume 7x19 would 
be best if I can't find the 6x19 LC.

3) Anyone have a source of 6x19 LC galvanized 5/16" cable?

                     ***dan, K6IF

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