I know a ham who uses the PVC electrical "sweeps" instead of pulleys.
I haven't tried that myself, but it seems like a good idea IF the sweep
isn't
attached to something that moves such as a tree.
Charlie, N0TT
On Sat, 25 Sep 2021 17:37:34 -0400 Artek Manuals
<Manuals@ArtekManuals.com> writes:
> The problem with a rope jamming in a pulley is that the rope (or
> cord)
> is "too small" for the pulley. The situation you describe can happen
>
> quite easily if you are using "parachute cord" for example with
> most
> most big box off the rack pulleys.
>
> I use the pulley approach with counter weights ( old window sash
> weights) on the rope going through the pulley to keep constant
> tension
> of the rope when the wind moves the tree back and forth. Typically
> these
> last a minimum of 2 to 3 years. typically 3/8" or larger rope and an
>
> appropriate sized pulley to match the rope
>
>
> Dave
>
> NR1DX
>
>
> On 9/25/2021 4:23 PM, W3HKK@roadrunner.com wrote:
> > . Here in Ohio we are still having moderate QRN especially in the
> > evenings. When I get on at our SR, the VK/ZL boys are often
> coming
> > through fairly well with much less QRN.
> >
> > My INV-L has a ceramic insulator at the apex, which is held in
> place
> > by 3/16" black synthetic rope of some kind ( Home Depot source)
> thrown
> > over my 52 ft tall black walnut tree tied off to another tree. I
> dont
> > use pullies since so often the rope slips off the roller and into
> the
> > crack between the roller and the U-bracket. So I just tied a rope
> to
> > the other side of the insulator and hoist.
> >
> >
> > _________________
> > Searchable Archives: http://www.contesting.com/_topband - Topband
> Reflector
> --
> Dave Manuals@ArtekManuals.com www.ArtekManuals.com
>
> --
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