I believe that indicate your nearby ham already exceeded the weight limit on
his tower. You should have some extra marginal (read: safety factors)
whenever you build a tower (or anything else for that matter). I would state
if it already collapsed when he was tilting it up , it would have collapsed
sooner or later, if nothing else probably when he tilted it back later to do
73 de Hans N2JFS
Sent: 8/14/2008 10:12:12 A.M. Eastern Daylight Time
Subj: Re: [TowerTalk] Heights Towers Aluminum??
Don't forget that you must comply with the dead weight capacity of your
tilt-over tower. This is important, a nearby ham failed to comply with the
weight specification and his Heights fold-over tower collapsed as he tilted
it up. His mistake? He forgot to count the weight of his Heliax feedlines!
Everything you add to your tower must be counted against the dead weight
specification, including all cables, masts, rotators and other accessories.
Give serious consideration to using an aluminum mast and light weight
feedlines and control cables.
Its especially important to minimize every pound of weight above the top of
the tower (i.e., mast and antennas and feedlines). Every pound above the top
of the tower adds very significantly to the moment on the lower tower
sections and the tilting base.
---- Original message ----
>Date: Thu, 14 Aug 2008 5:11:25 -0700
>From: Dennis <email@example.com>
>Subject: Re: [TowerTalk] Heights Towers Aluminum??
>To: W3OA <firstname.lastname@example.org>, email@example.com
>Thanks for taking the time to respond Dick.
>Very good input on some of the issues I would be faced with. How do you
rotate the antenna at 40' or is it stationaly? Isn't there some kind of ring
assembly for rotating antennas on the sides of towers?
>Thanks Dick, Dennis, k0eoo
>---- W3OA <firstname.lastname@example.org> wrote:
>> Hi Dennis -
>> I have a 60' Heights tower with a fold-over kit and 10 feet of mast out
>> the top.
>> It's been up for 5 years now and I'm very happy with it.
>> You do need to watch how big an antenna you put on it. If the antenna
>> is too large you won't be able to lower the tower far enough to work on
>> most of the antenna from the ground. I suppose that's obvious but it's
>> a trade I thought about for a long time before I decide to get a
>> fold-over tower. I ended up with two Force 12 C-4s, one at 40 feet and
>> one at 70 feet. I can reach the feed points using an 8 foot step ladder.
>> Another gotcha I found out through experience is that rotor brakes that
>> hold an antenna just fine when the tower is up may not hold the antenna
>> in position as the tower rotates down. The antenna, of course, wants to
>> rotate so its heavy end is pointed down and the break may not hold it in
>> any other position. This can be an even bigger problem with side
>> mounted antennas.
>> I'd do it again 'cause I don't want to climb a tower.
>> Good Luck - Dick, W3OA
>> Message: 6
>> Date: Mon, 11 Aug 2008 20:46:23 -0500
>> From: "Dennis Petrich" <email@example.com>
>> Subject: [TowerTalk] Heights Towers Aluminum??
>> To: <firstname.lastname@example.org>
>> Message-ID: <A577548AEF344F668DEB831F901180B9@D5V7GZF1>
>> Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>> Hello all who have aluminum towers.
>> I am thinking of putting up the tilt-over self supporting aluminum tower
>> from Heights Towers. This one is 69' with the tilt-over kit and is rated
>> 21sq' at 80mph. and will take a 12' mast. I will be putting up 15sq' of
>> Anyone of you have experence with such a thing?? The whole tower tilts
>> so you can work on the antenna from the ground, an idea I like very much.
>> You can see it on their web page.
>> Thanks in advance for your comments
>> Dennis, k0eoo
>> TowerTalk mailing list
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