[TowerTalk] Fwd: Rohn25 Guying question

[Tom KD8DEG]

I have an older 80ft 25G tilt over, guyed with 4 guy wires at 30ft and 75ft, 
with 7 antennas, 2- "Y" beams 2 and 6 m, 3- verticals and 2- squalos. 80 mph 
gust's with downed trees all over, and the tower stood solid.

http://www.rohnnet.com/rohn-25g-tower This Rohn URL has all the info for 
guying

KD8DEG  Tom


----- Original Message ----- 
From: "Hans Hammarquist" <hanslg at aol.com>
To: <towertalk at contesting.com>
Sent: Friday, March 15, 2013 10:31 PM
Subject: [TowerTalk] Fwd: Rohn25 Guying question


>
> I made the calculations and, at least in theory, the "bending" momentum on 
> the tower gets lower if you put the guys a little lower. I have climbed it 
> the biggest swing/vibration was between the guy point and ground. It's an 
> aluminum tower so the springiness is a "little" more than the steel 
> counterpart.
>
>
> You can check it at
>
>
> https://www.facebook.com/media/set/?set=a.10150198503693539.328964.579753538&type=1&l=1c649b80ab
>
>
> As you can see, the guys are about 70 feet up. The tower is 85 feet.
>
>
> Hans - N2JFS
>
>
>
>
>
>
>
>
> -----Original Message-----
> From: Wilson Lamb <infomet at embarqmail.com>
> To: towertalk <towertalk at contesting.com>
> Sent: Fri, Mar 15, 2013 8:59 pm
> Subject: [TowerTalk] Rohn25 Guying question
>
>
> Since we’re having non engineer inputs...
> I’d much rather have guys near the top and a little close in than have 30’ 
> of
> tower flapping in the breeze (and eating out the holes in the legs and 
> sawing at
> the bolts).
> I recently bought some used 25 with holes chewed out to at least twice 
> original
> diameter...no idea how it was installed.
> Besides, you wouldn’t be climbing above the guys, as long as you use 
> temporaries
> on the way up from the others.
> We need an engineer to chime in, but I’d bet that two sets would be 
> enough??
> Does anyone know the square foot rating of a 10’ section?
> WL
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>
>
>
> _______________________________________________
>
>
>
> _______________________________________________
> TowerTalk mailing list
> TowerTalk at contesting.com
> http://lists.contesting.com/mailman/listinfo/towertalk
>