David,
You can fabricate a sponge ball using foam rubber and cover it with cloth so
it will slide. Attach a nylon string to it and suck it thru using a shop
vacuum cleaner. Once you get it through, then you can use the string to pull
in your pull wire...etc.
It works fine with PVC, but I'm not sure about corrugated tubing. Getting a
good seal might be tricky.
73s de Jim
W5IFP
> -----Original Message-----
> From: towertalk-bounces@contesting.com
> [mailto:towertalk-bounces@contesting.com]On Behalf Of David Aslin
> Sent: Sunday, May 06, 2012 4:49 PM
> To: towertalk@contesting.com
> Subject: [TowerTalk] Cable pulling
>
>
> Gerald's note prompts me to ask a related question:
> What techniques are folks using for the first pull through a conduit?
> Background: Like Gerald, I plan to have a 400ft+ run of 4 inch
> corrugated irrigation tubing. A 400ft fish tape would be hard to
> find/expensive, but I need to get a pull rope through the conduit before
> I can do the first cable pull (LDF5-50) How?
>
> 73
> David G3WGN WJ6O
>
> ------------------------------
> Date: Sun, 6 May 2012 15:13:42 -0300
> From: "VE1DT-Towertalk" <gboutin@seaside.ns.ca>
> Subject: [TowerTalk] Wire Soap - How Much?
> To: <towertalk@contesting.com>
> Message-ID: <001801cd2bb3$f96e2ce0$ec4a86a0$@seaside.ns.ca>
> Content-Type: text/plain; charset="us-ascii"
>
> I've no experience in running cables through conduit, but I do know that
> I want to use a cable lube. I can get Klein #15028 1 quart bottles
> locally, but I don't know how much I will need. Also, I know I don't
> want to run out part way. In browsing through the archives, the answer I
> keep seeing is "lots".
>
> In my case, I am using 4" diameter corrugated irrigation tubing for a
> couple of LMR600 cables, a couple rotator cables and a few CAT5 cables.
> Total
> length is 400 feet. Worst case would be the volume of the conduit.
> Using
> the formula, pi *r^2 *length tells me about 30 gallons. I am not
> planning on doing that.
>
> Polywater http://www.youtube.com/watch?v=kr87VQcJeK8 says to use this
> formula for PolywaterJ: Gallons = 0.0015 * Diameter(inches) *
> Length(feet).
> This comes out to 2.4 gallons. Using 1 quart bottles, this comes to
> about
> $150 here. Grainger also sells larger 1 gallon containers of 3M WL lube
> at about the same price as two of the Klein one quart squeeze bottles.
>
> Does 3 gallons sound about right?
>
> --
> Gerald Boutin, VE1DT
>
> ********************************
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk@contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|