OK - I was assuming that the dipole was going to be at the center and draped
inverted V style. I didn't think about using multiple towers - guess that is
what happens when I assume. When set up as an inverted V, it would not be
as bad, since the forces would be roughly equal and opposite.
Using two towers with the dipole between them, and the dipole on a
centenary, then the forces are offset - and they would be at the max rated
load - no disagreement there.
Regardless of the height - it will still be less that 40 feet in the
air.....kind of pointless as everything will go straight up in the air and
warm the clouds....
Scott
-----Original Message-----
From: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com]On Behalf Of Jim Lux
Sent: Saturday, November 11, 2006 7:37 PM
To: kb0fhp@comcast.net; kdm@ctcn.net; TowerTalk@contesting.com
Subject: Re: [TowerTalk] Max Unguyed Rohn 25 height to support dipole
end
At 03:59 PM 11/11/2006, D. Scott MacKenzie wrote:
> >From the 2004 Rohn Catalog, p 116, at 70 mph, the maximum freestanding
>height is 40 feet - with a 1.5 ft^2 loading - no ice.
>
>Scott
1.5 sq ft @ 70 mi/hr is 19 pounds..
If tension is 40 odd pounds (see previous mail with catenary
calculation), you're probably a bit overloaded...
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|