[Towertalk] FK4564 Rohn Gin Pole

[Jim White]

I LIKE THE TEM,PORARY TALLER TOWER IDEA A LOT - USE THE SECTIONS FROM THE
UPPER [PORTION OF THE TOWER NO YET INSTALLED - GAWD HOW OBVIOUS - DUH - I
LOVE THIS REFLECTOR!

LEAVE IT TO OLDE SAGE K6NA....

K4OJ


----- Original Message -----
From: "Wendell Wyly W5FL" <wendell@wyly.org>
To: "jljarvis" <jljarvis@adelphia.net>; <towertalk@contesting.com>
Sent: Thursday, July 11, 2002 5:59 PM
Subject: [Towertalk] FK4564 Rohn Gin Pole


> For a Rohn 45 Foldover tower, the folding section weighs 100# and the Boom
> Section weighs 165#.  They are very heavy on a Rohn45 Gin Pole and in both
> cases, the gin pole is only extended enough to raise the load to the
> required height.  The Rohn gin pole is not designed to take any
appreciable
> side loads.
>
> In previous discussions with K6NA Glen Rattman, he puts the 20 foot mast
in
> the tower after the first two sections are built and does it by
constructing
> a second 30 foot tower clamped securely to the first tower and uses the
> second tower to lift the mast, then tears that tower back down.
>
> Handling big masts is very dangerous work and for an amateur, the crane is
a
> reasonably safe way to handle it if the tower is already built.  Working
> with a BENT 20 foot mast nearly always requires a crane to get it down.
>
> -----Original Message-----
> From: towertalk-admin@contesting.com
> [mailto:towertalk-admin@contesting.com]On Behalf Of jljarvis
> Sent: Thursday, July 11, 2002 9:08 AM
> To: towertalk@contesting.com
> Subject: [Towertalk] mast disaster avoidance
>
>
>
> Folks:
>
> This thread still seems to persist.  Some comments are
> and a question are in order:
>
> N4KG recommended either placing the mast inside the
> tower while at the 20-30' level, or using a crane.
> He further suggested a longer than normal ginpole.
> Placing a 100lb 20+ ft mast inside a 130' tower was
> "The SCARIEST thing" he'd ever done.   I was only at
> 60', but I'd never do it again.
>
> K7NI points out that the Rohn 25/45 ginpole rating is for a 70lb
> section of 45G, so you're pushing it with a much heavier mast.
>
> The root problem is balance and leverage, and lifting height, and it's
> flat-out dangerous to pursue this with the top section in place.
>
> If renting a crane isn't in your budget, REMOVE THE TOP SECTION OF
> THE TOWER.
>
>
>
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