Another chapter in the continuing saga of why crankups scare me. I realize
this method works in a practical sense, but I fear it's a maiming waiting to
happen. Please be careful.
73, Jerry W5KP
----- Original Message -----
From: "Craig Clark" <nx1g@mail.monad.net>
To: <towertalk@contesting.com>
Sent: Monday, November 05, 2001 8:23 AM
Subject: [TowerTalk] ma-550
>
> I have the same problem with my Tri-ex W-67 crank-up. The reason is that
it
> was damaged in shipping and the tower is slightly bent in several places.
> Additionally, when the tower is extended, even tho it is plumb, it will
tip
> a bit and that increases the friction where the sections meet.
>
> As I lowered the tower, I can see the top wire rope go slack and I
> know the top two sections are bound. As this is on a crank-up and at
> approximately 50', the next question is what to do?
>
> What I needed was a positive pull-down scheme like the LM470 and other BIG
> towers have.
>
> I solved this problem by getting some help from the local fire department.
>
> Using their ladder truck, I attached a wire rope to the bottom of the top
> section with three wire clamps and a thimble. This rope extends to the
> ground plus a few extra feet.
>
> I attach a pulley to the tower base, run the wire rope thru the pulley to
a
> wire grip attached to one of my come-alongs. I tension the wire rope,
> lower the tower, re tension the wire rope and continue until the tower
> comes down by itself.
>
> Voila! Positive pull-down on the cheep.
>
> 73 Craig Clark W1JCC
>
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>
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>
>
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List Sponsored by AN Wireless: AN Wireless handles Rohn tower systems,
Trylon Titan towers, coax, hardline and more. Also check out our self
supporting towers up to 100 feet for under $1500!! http://www.anwireless.com
-----
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