[TowerTalk] Guying mast above rotor

[TexasRF at aol.com]

As we say around here: Long masts are not substitutes for tower  sections.
 
73,
Gerald K5GW
Texas Towers
 
 
 
In a message dated 2/12/2014 2:30:20 P.M. Pacific Standard Time,  
lwloen at gmail.com writes:

I'm no  engineer, either, but that fits my way of thinking too.

I'm biased,  too, by a colleague with a tall tower and a big mask sticking
out the  top.  He was a VHFer.

He got a fairly big storm.  The mast  bent, but the tower (and even the
antennas) survived.  But, yeah, if I  had a tall enough tower I'd give up
the mast and antennas instead of the  tower if I could design that in
properly.  Guy the tower, give up the  mast.


Larry WO7R


On Wed, Feb 12, 2014 at 2:00 PM,  <w6rgs at cox.net> wrote:

> Matt,
> You didn't mention the  height of your tower or if it is crank-up or 
guyed.
> If it's a  crank-up, I'd just lower the tower when a storm is expected.
> If the  tower has no other guying, think about where your tower is going 
to
> be  flexing during that hypothetical severe storm, while the mast is guyed
>  and the base is in concrete.  While I don't have an engineering degree,  
I'm
> picturing the tower flexing in the middle.  Seems like the  tower would 
fail
> in the middle.  I'd rather lose the antenna,  instead of an expensive 
tower.
>  I'm sure there is someone with  engineering experience here that can use
> facts instead of  speculation.
> Bill W6RGS
>
>
> At 11:45 AM 2/12/2014,  Matt wrote:
>
>> I know the subject line sounds dumb,, but I  have 15' of mast above my
>> tower and live in South Florida. Read  on...
>> Im thinking of putting a guy ring at about 12' above the top  of the
>> tower, and, only in event of a severe storm, attach 3 guy  wires, which
>> would be anchored in concrete, the cables sitting on  the ground, 
affixing
>> them to the collar in event of  storm.
>>  I've also thought of having  short guy wires  permanently mounted on the
>> guy ring collar, with the short guy  cables running down the mast to the 
top
>> of the tower.  Then i  could climb up and attach the guy wires, if 
needed.
>> No need for a  bucket truck.
>> I think this would provide additional survivability  to the mast in heavy
>> wind
>> Any thoughts on this? Good  idea, bad?
>>
>> Thanks/73
>> Matt  w1mbb
>>
>
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