The current recommendations for terminating EHS steel guys are the
Preformed Products Big Grips, BG2142 for 3/16EHS and BG2144 for 1/4EHS.
They have superior holding strength and take far less time to install
compared to cable clamps.
The cost for a Big Grip is less than the cost of three forged clamps so it
is a win-win.
They are available at Texas Towers and other tower suppliers.
73,
Gerald Williamson K5GW
General Manager, Texas Towers
In a message dated 6/6/2014 10:59:24 A.M. Pacific Daylight Time,
k4kyv@hotmail.com writes:
When I erected my tower 30-plus years ago, the cable clamps sold with Rohn
towers were listed as 3/16 CCM, 1/4CCM, etc. In the current catalogue they
are listed as 3/16 CCF, 1/4 CCF etc. The ones listed in the older
catalogue were called 'malleable', but the ones in the current catalogue are
'forged'.
One thing you do want to avoid in any case is the junk sold at hardware
stores. They are 'zinc-plated' and not galvanised. The layer of zinc coating
is minuscule, and the clips will rust in less than a year.
I wasn't sure about the difference between malleable and forged, and found
this:
>>>>>>Well, I know that forged crosbys are where it's at for rigging, and
that malleable wire rope clips shouldn't be used...
Malleable metal is cast metal and tends to be brittle. Take a plumbing
elbow and hit it with a hammer, it will break easily. Forged metal is shaped
by hammering or in this case, bend by hydralics. It is a much stronger
product that will not break under load...
The main difference between forged and cast (regardless of alloy being
used) is that a forging starts as a solid piece of metal, but a casting is
metal that is melted and poured into a mold...>>>>>>
http://www.controlbooth.com/threads/malleable-vs-forged-wire-rope-clips.2588
4/
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