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Re: [TowerTalk] yearly maintenance checks Re: Preforms

To: "Jim Thomson" <>, <>
Subject: Re: [TowerTalk] yearly maintenance checks Re: Preforms
From: "Tom Kennedy" <>
Date: Tue, 30 Aug 2011 19:58:39 -0400
List-post: <">>
in the process of putting up a 104 foot Delhi, gonna guy it in four places, 
first starting at the 64 foot mark and then roughly every fifteen feet or 
there a bouts - placing two 10 element 2 metre twisters by cushcraft and the 
mounting kit at the top because I wish to sideband contest  73 tom/va3tvk
----- Original Message ----- 
From: "Jim Thomson" <>
To: <>
Sent: Tuesday, August 30, 2011 7:26 PM
Subject: [TowerTalk] yearly maintenance checks Re: Preforms

> Maybe so and maybe not.  Ice storms have take down perfectly good tower
> systems.  So have high winds that were outside the norm for an area.
>> You know.. we see this advice all the time: "It's time for your annual
>> spring tower check".. but I wonder.
> ## time to do the annual check up is in the late summer/fall... not after 
> the winter has come and gone.
> I'd do it at least twice a year, before the snow starts flying..and again 
> in the spring.   You can see a lot
> just by using a spotting scope on a tripod. It's amazing the detail  I can 
> see with  20 x 80 binoculars on a
> tripod, or  my Celestron C-90.. 90mm small scope.   The scope is a small 
> thing, optically folded back on itself,
> and really short in length, weighs zip. Then the camera can be put on the 
> end of it.   I also have a special clamp that
> slides over the window glass of any car/truck, that's perfect to stabilize 
> a camera/scope/binocs.
> ##  One of the fellows here in town had a tower cam mounted to the 
> rotating mast.  Painting towers orange/white
> [or sky blue] is a pita.  Once that paint starts peeling, it looks 
> bad...and no fun to repaint.   That cold  galvanize is the
> most that should be needed  for minor surface rust, etc.
> ##  IF your ehs guy wire shows a lot of surface rust....time to replace 
> em, not repaint them.  In order to paint them, you would
> have to undo the turnbuckles and 1st install a temp guy wire.   Why 
> bother, just replace all of em.
> ## I use that marine grade never seize goop  + small torque wrench's all 
> the time.   Most folks have no clue as to how much torque they have
> on nuts/bolts etc.  95% of ham have no clue how much tension they have on 
> their guy wires.  I have seen everything from really sloppy/loose,
> to WAY over tensioned.   One guy wire failure anywhere, and poof, it's all 
> coming down.   These rotating towers are what really freak me out.
> There is nothing at all to absorb the torque.   One fellow posted on here 
> year ago, who had 4 x side mount swinging gates..and a 40m yagi on top.
> The gates were in the worse possible orientation one day.....and all 4 of 
> em  pointed in the same direction. Wind got up..and produced a massive
> TQ on the tower, and even with multiple sets of guy wires, one leg sheared 
> at the base.
> ## For towers <120'  tall... the strongest thing I can envision is a heavy 
> duty self support tower....with the addition of guy wires on it.
> Adding TQ  compensation to any yagi  goes along way to solving basic 
> problems.
> later...... Jim  VE7RF
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