Gene,
I used a HDBX48 with a 8 ft. mast, KT-34A 4el tribander and 11 element 2m
yagi above that for many years on the very windy high plains of western
Nebraska with no problems. However, I junked both the stock rotor plate and
top bearing plate even before I put the tower up. They were extremely light
weight made out of bent sheet metal. I thought the bent taps they used to
attach to the tower would be a source of failure with prolonged flexing. I
replaced both the bearing plate and rotor plate with fabricated 1/8" steel
plates with heavy duty "L" brackets made at the local machine shop by a rather
talented welder. He used the existing plates as templates for the new ones
and they fit perfectly.
I never had any problems with any rivits popping out.
73 de Bill
To: towertalk <towertalk @ contesting.com> @ Internet
cc:
From: Gene Smith <Gene.Smith @ mailhost.bellhow.com> @ Internet
To: <towertalk@contesting.com>
Date: 12/05/96 01:42:42 PM
Subject: Rohn HDBX-48
Who out there has information or an opinion on
the Rohn series HDBX-48. This is a 48' self
supporting tower. I am considering putting
up this tower at my QTH in Medina, OH (Medina
County). I'll be putting a Cushcraft A3S or
equivalent beam on top of it. I know this
is not recommended by Rohn because they say
not to use anything with a boom longer that
10'. The A3S has a boom of 14'. I might
guy the tower, somewhat weekly with the guy
anchors about 10' from the tower just for
a little extra support. My main concern is
the Rohn manual for the HDBX says to replace
any loose rivets with bolts. WHAT? You mean
to tell my the x-braced rivets might come out?
I assume this means an annual trip up the tower
to check out all the rivets, carrying a cordless
drill and pocket full of nuts and bolts. How
does one climb this tower with the X braces?
Gene
WD8OZL
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: K7LXC@contesting.com
Sponsored by Akorn Access, Inc & KM9P
------ Message Header Follows ------
Received: from paris.akorn.net by uprr-internet.notes.up.com
(PostalUnion/SMTP(tm) v2.1.9c for Windows NT(tm))
id AA-1996Dec05.134206.1155.492531; Thu, 05 Dec 1996 13:42:06 -0500
Received: (from majordom@localhost) by paris.akorn.net (8.7.6/8.7.3) id
MAA29492
for towertalk-outgoing; Thu, 5 Dec 1996 12:23:18 -0500 (EST)
X-Authentication-Warning: paris.akorn.net: majordom set sender to
owner-towertalk using -f
Received: from tis.bellhow.com (firewall-user@tis.bellhow.com [38.252.198.21])
by paris.akorn.net (8.7.6/8.7.3) with SMTP id MAA29487 for
<towertalk@contesting.com>; Thu, 5 Dec 1996 12:23:16 -0500 (EST)
Received: by tis.bellhow.com; id MAA10536; Thu, 5 Dec 1996 12:28:29 -0500
Received: from mailhost.bellhow.com(198.30.176.2) by tis.bellhow.com via smap
(V3.1.1)
id xma010514; Thu, 5 Dec 96 12:28:10 -0500
Received: from bh3.bellhow.com (bh3.bellhow.com [198.30.176.7]) by
mailhost.bellhow.com (8.7.6/8.7.5) with ESMTP id MAA22317 for
<towertalk@contesting.com>; Thu, 5 Dec 1996 12:28:10 -0500 (EST)
From: Gene Smith <Gene.Smith@mailhost.bellhow.com>
Received: (from gene@localhost) by bh3.bellhow.com (8.7.6/8.7.5) id MAA21745
for towertalk@contesting.com; Thu, 5 Dec 1996 12:28:09 -0500 (EST)
Message-Id: <199612051728.MAA21745@bh3.bellhow.com>
Subject: Rohn HDBX-48
To: towertalk@contesting.com
To: <towertalk@contesting.com>
Date: Thu, 5 Dec 1996 12:28:09 -0500 (EST)
X-Mailer: ELM [version 2.4 PL23]
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: owner-towertalk@akorn.net
Precedence: bulk
Attention Priority: Normal
--
FAQ on WWW: http://www.contesting.com/towertalkfaq.html
Submissions: towertalk@contesting.com
Administrative requests: towertalk-REQUEST@contesting.com
Problems: K7LXC@contesting.com
Sponsored by Akorn Access, Inc & KM9P
|