On 10/24/2011 11:52 PM, Grant Saviers wrote:
> I've found that a wadded up plastic grocery bag with a few wraps and
> ties of the pilot string works just fine for the vacuum cleaner pull or
> push. No need to fish it as you glue, even for 200' plus runs. It's
> amazing how fast the string will run out.
>
> For the pilot, I use conduit measuring tape (flat x 3/16 wide, 130#
> break) by Greenlee available at electrical supply stores, then you know
> the exact length of the pull. Mason's twine also works fine.
>
> 3 strand rope is not a good pulling rope since it will put twist in the
> cables as it untwists under tension. Braided rope or the flat nylon
> webbing sold for conduit pulling are better choices.
>
I found 3 strand (conventional twist rope) to be unsatisfactory for
raising and lowering pretty much anything that needs to stay straight.
Hang a wrench on the end of a hundred feet of the stuff from a pulley
and then pull up the wrench. It'll spin like crazy! <:-)) It'll put a
twist in almost anything that can be twisted. Also, manilla rope is
definitely life limited. When a 1 1/4" rope broke I had a 20# pulley
block pass over my shoulder right next to my ear about 100-120 feet from
where the pulley had been anchored. My head would have been about 10'
off the ground with me sitting on a tractor seat. The pulley hit the
ground nearly a 100 yards behind me. I was happy it wasn't dragging
that big rope behind it.
73
Roger (K8RI)
> Grant KZ1W
>
> On 10/24/2011 4:01 PM, Dino Darling wrote:
>> If you have the mouse...use a vacuum!
>> http://www.grainger.com/Grainger/ecatalog/N-1z0dsw9
>>
>>
>> Dino - KX6D
>>
>>
>> -------- Original Message --------
>> Subject: [TowerTalk] Pull Rope in Conduits?
>> From: "Steve Jones"<n6sj@earthlink.net>
>> Date: Mon, October 24, 2011 8:51 am
>> To:<towertalk@contesting.com>
>>
>>
>> I'm about to place a number of 150' Sched 40 PVC conduits between my
>> shack
>> and new tower. I want to end up with small 200 lb. stength nylon twine
>> in
>> each conduit, then use that small twine to pull through a larger 1/4"
>> nylon
>> rope for the actual cable pulls.
>>
>> Should I use a fish tape to pull through the small twine as I glue on
>> each
>> additional section of conduit? I'm concerned about the PVC cement
>> sticking
>> to the nylon twine. Or is there an easy way to install the small twine
>> after a whole 150' run of conduit is completely glued together?
>>
>> 73,
>>
>> Steve
>> N6SJ
>>
>>
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