K7LXC@aol.com wrote:
>
> In a message dated 12/29/2008 11:59:59 A.M. Pacific Standard Time,
> towertalk-request@contesting.com writes:
>
>> Does anyone know what knot would be best for lifting a mast pipe up and
> into
> the rotor using a gin pole?
>
> Ah, amateurs vs. knots. Unfortunately most hams don't know any knots.
> When I'm working up on a tower and I ask for something to be tied and
> lifted,
> what I usually wind up with is a wad of rope. Since there aren't too many
> applications for knot knowledge in everyday suburban life, I understand the
> problem.
>
> The knot I would use is a clove hitch. It's pretty simple and
> self-tightening. It's in any knot book or website.
>
> But the even simpler solution is to use nylon slings. I always carry 6-8
> of them when I'm doing tower work and sometimes I use all of them. They are
> 1" nylon webbing that's sewn together giving you an endless loop 12-18"
> long.
> You just put it around the object of interest once or twice (for heavy loads
> I'd recommend at least twice) and pull it thru the other end of the loop.
> Put some tension on it and you're good to go. The more you pull it, the
> tighter
> it gets. All you have to do to release it is un-weight it. In the parlance
> it's known as a choker. Champion Radio Products has them and you can buy
> them
> at REI - look in the climbing hardware department near the carabiners.
>
>
probably a bit pricey for a one shot deal, but maybe you know someone
who has them.. soft slings are even nicer (they're a tough fabric tube
with unwoven fibers inside).. think of kernmantle rope with a very loose
sheath. They're great because they "squish" out where they cross over an
edge or something, and they're really abrasion resistant (for the same
reason as kernmantle climbing ropes)
Also called Spansets
http://versales.com/ns/sling_webbing/span_sets.html
page 1450 in the McMaster-Carr catalog
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