[TowerTalk] Several questions for the group

[Jerry Kincade]

HOW it's done makes a huge difference. A rigger who knows what he is doing
can use a sling cable attached to two points on the tower, with a riding
sheave on it as a pulling attachment point, thereby equalizing the stress as
the angle of pull changes. I've seen it done, it works fine. I even did it
myself with my old 30' R25 on a hinged base using my tractor's hydraulic
lift boom as the pulling device, and easily put the whole thing up alone
(and took it down later the same way). However, to just tie onto it
somewhere and start pulling is courting disaster, IMHO.
73, Jerry W5KP

----- Original Message -----
From: <n4kg@juno.com>
To: <TOWERTALK@contesting.com>; <brewerj@squared.com>
Sent: Thursday, November 01, 2001 10:50 AM
Subject: Re: [TowerTalk] Several questions for the group


>
> N4KG responses inserted below.
>
> On Thu, 1 Nov 2001 brewerj@squared.com writes:
> >
> > Just resubscribed again, and am planning to put up a modest
> > tribander/6M stack on a 50'  Rohn 25 tower and have a couple questions.
> >
> > 1) What kind of base is required for a guyed 25 tower using a hinged
> > plate> base?
>
> See Rohn Drawing C-750112 for the base requirements.
> They make NO mention of how much tower can be
> raised using the hinged base.  Someone told me
> it was intended for TV type installations with 3 or 4 sections.
> I would be concerned with 5 sections.  The forces at the
> base are HUGE.  On the other hand, one of the locals
> did raise a 50 ft tower with a hinged base and a tow truck.
>
> > I've got the Rohn 25 info pack and cant see any specific info
> > regarding this config?
> >
> > 2) If I use a 25' tree as a "boom" can I pull/walk up the tower into
> > place with the hinged base?
>
> Using an elevated pull up point does help to reduce
> the forces at the base.
> >
> > 3) Does Mosley sell replacement aluminum tubing for their antennas?
> > I need one section...
>
> Mosley sells replacement parts for all of their antennas.
> Most of their tubing is in straight sections.  Texas
> towers sells all sizes of aluminum tubing in 6 and 12 ft
> pieces.  Short pieces can go UPS.  Long pieces go by truck.
> >
> >
> > Thanks in advance
> > John
> >
>
>
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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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