[TowerTalk] New Cables for a Crank Up and NicoPress Clamps

[John Hudson]

I just recabled my tower and I tied a rope on the end of the cable and pulled the cable out and the rope replaced the old and then I pulled my new cable thru using the rope which was already in the correct path

I had a cable rigging company make my cables up. They make up cables for river barges from 1/4" to several inches in diameter and used hydraulic presses to clamp the cable and thimbles

73
John
KO4XJ
Sent from my Verizon Wireless BlackBerry

-----Original Message-----
From: "Bob Maser" <bmaser at tampabay.rr.com>

Date: Wed, 29 Oct 2008 15:38:25 
To: jimlux<jimlux at earthlink.net>; Bill Gaines AD8P<ad8p at wcoil.com>
Cc: <towertalk at contesting.com>
Subject: Re: [TowerTalk] New Cables for a Crank Up and NicoPress Clamps


One other thing,  This is not a project to be taken lightly.  You will be 
wise to find a local ham that has done this before and is knowledgeable. 
Danger abounds.  I have always layed my towers over and recabled with the 
tower horizontal.  The new ones need to be fed through in the same path as 
the old ones are pulled out.

Bob  W6TR
----- Original Message ----- 
From: "jimlux" <jimlux at earthlink.net>
To: "Bill Gaines AD8P" <ad8p at wcoil.com>
Cc: <towertalk at contesting.com>
Sent: Wednesday, October 29, 2008 2:34 PM
Subject: Re: [TowerTalk] New Cables for a Crank Up and NicoPress Clamps


> Bill Gaines AD8P wrote:
>> I am having to install a new pull up cable on my LM-470. While
>> considering the replacement from a California company at a cost of
>> $210 plus $90 shipping I got to thinking about rolling my own from
>> local parts. Tell me what you think please.
>>
>> I can obtain 3/16 aircraft cable and thimbles with no problems. What
>> I am having problems finding are the "Nicopress" clamps used to
>> secure the ends around the thimbles. It is the part that gets
>> compressed around both cables and holds it together. On the existing
>> cable the clamp is made either of copper or brass (probably copper).
>> It is approximately 1/2 inch in diameter and maybe an inch long. What
>> I am able to find looks like aluminum and looking at the end looks
>> like a figure 8 with 2 holes for the wires. Are these "good"
>> replacements for the original clamps I am looking for?
>>
>
> McMaster-Carr? http://www.mcmaster.com
> wire rope compression sleeves page 1384
> $9/pkg of 10.
>
> The crimp fittings are available in a variety of metals.  You DO need to
> have the correct crimping tool. they are available a variety of places
> including McMaster-Carr, but you need to make sure the one you have/get
> has the right size die in it, each sleeve needs a different size crimp
> die.. my crimper (from Felco) has 3 or 4 slots in it.
>
> The catalog says aluminum sleeves are not for use in lifting
> applications (which yours is).  But, are you sure they're aluminum and
> not plated copper (zinc, tin) or stainless steel?
>
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