That is correct. I leave no pull lines in the conduit for future pulls.
Instead, I blow a ghost thru for each new pull. This almost guarantees a
straight shot thru the conduit without corkscrewing down the pipe which can
happen when you pull a future line along with a conductor, especially one
that has been coiled up. As far as getting the ghost down the conduit
with existing conductors, the plastic bag conforms nicely to the interior
of the conduit. To give you an idea of whats inside oneof mine, one of my
2" runs is 165' long, and contains one 1/2" Heliax, 2 four conductor
control cables, 1 rotator cable, and 1 two conductor low voltage cable
which powers my heated rain bucket on my weather station. Each cable was
pulled individually over time as the tower site grew.
K3GM
On Tue, Aug 29, 2017, 1:28 PM Richard (Rick) Karlquist <
richard@karlquist.com> wrote:
> I am not following what you are saying here. Are you saying you
> blow in the ghosts in the conduit before pulling in the cables?
> How is that different from leaving pull ropes in as usual?
> Or are you saying you are able to blow it through after you
> have pulled cables thru? I don't see how you can be sure
> it won't get stuck on the existing cables. Please explain.
>
> I completely appreciate the twist problem (been there done that).
> I just don't understand your solution.
>
>
> 73
> Rick N6RK
>
>
> On 8/29/2017 7:02 AM, Thomas Hybiske wrote:
> > The problem with leaving pull ropes in the conduit for future pulls is
> that
> > can make slow helical twists with the other conductors already in there.
> > I've pulled a bundle of control and transmission lines out of conduit
> that
> > were all intertwined with each other and quite a mess from using pull
> lines
> > left in the conduit.
> >
> > Instead, I blow a "ghost" thru the conduit for each new conductor. Using
> > mason's twine, I knot it to a plastic back with I stuff in the conduit.
> > Then I use the exhaust of a shop vac to propel the ghost thru the
> conduit,
> > paying out the twine behind it. The ghost flies out the other end with
> > great force if enough air is used. This is followed up with the actual
> > pull line. I've used this method successfully with conduit up to 175'
> in
> > length.
> >
> > Tom Hybiske, K3GM
> >
>
--
Sent using a tiny keyboard. Please excuse brevity, typos, or inappropriate
autocorrect.
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