This seems beaten to death now, but honestly, who can't support a 16'
aluminum 2" mast by holding its lower four feet length, as anybody more than
5'6" tall could do, belted near the top of a tower? This means holding a 25
pound mast below its center of gravity, but this isn't particularly
difficult on a calm day. A 100-lb mast is a different story...
-WB2WIK/6
"If everything seems under control, you're just not going fast enough." -
Mario Andretti
> -----Original Message-----
> From: Mark [SMTP:aa6dx@pacbell.net]
> Sent: Friday, September 27, 2002 1:53 PM
> To: Jim White, K4OJ; sparks@apk.net
> Cc: towertalk@contesting.com
> Subject: Re: [Towertalk] Mast Coupler?
>
> The problem here is that this is like holding a broom by its last 3
> inches,
> in a vertical position, and DOING something with it... sure, you can do
> that
> .. but not for VERY LONG ... and Jim has it right .. in this instance, a
> killer-diller gin pole is not needed .. just some assistance, and
> steadying
> factor... like, a heavy duty piece of conduit clamped to the tower legs at
> the top, and a pulley up "yonder" -- so you can navigate while holding on
> for dear life! IMHO .. 73, Mark 6dx (Been there, done that)
> ----- Original Message -----
> From: "Jim White, K4OJ" <k4oj@tampabay.rr.com>
> To: <sparks@apk.net>
> Cc: <towertalk@contesting.com>
> Sent: Friday, September 27, 2002 1:01 PM
> Subject: Re: [Towertalk] Mast Coupler?
>
>
> > if you are using two pieces spliced why bother with the extension...
> > typically a splice is synonymous with failure point, eh?
> >
> > Suspect you want to have about half of it in the tower and half of it
> > out of the tower - better to use a 16 footer and borrow a gin pole in my
> > opinion...
> >
> > You can fabricate a gin pole for this application if need be - be sure
> > to make it tall enough that you can elevate the middle to half the masts
> > length above the top of the tower - otherwise you will need
> > counterweights, etc. - and significantly will increase the "pucker
> > factor" (that is a direct quote from the list moderator re this type of
> > work)
> >
> > K4OJ
> > >
>
>
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