[Top] [All Lists]

Re: [TowerTalk] Foldover at roof level?

To: <>, "Justin Wilson" <>
Subject: Re: [TowerTalk] Foldover at roof level?
From: "ChetMoore" <>
Date: Mon, 20 Feb 2006 14:50:14 -0500
List-post: <>
Hi Justin,

I  didn't have mine at roof level but I do have a little "insight" when it 
comes to 25G foldover towers.

At what height is the ROOF LEVEL??  I assume this is a flat roof ???

Are you doing it against the building because there is no room behind  or on 
the sides of the building?

 WARNING !     The voice of experience says that "winches" can be dangerous 
to your health" !!!

The whole idea of a fold over tower is to allow one to work on their 
antennas ON THE GROUND and NOT have to climb the tower.
If you prefer to work on the roof.  I SAY " GO FOR IT".

In the 10 years I had mine, I only had to tilt it over a few times.  It was 
great for  rotor maintenance,  antenna maintenance and  switching out 
antennas. You probably know that the rohn 25g foldover came as a standard 40 
foot tower? By inserting one straight section below the hinge and one above 
the hinge you could tilt over 60 feet.  That was in my younger days so it 
would be even more appealing today. Sure beats climbing. Some brave souls 
even added TWO  sections below the hinge and TWO  above the hinge.  Actually 
I would probably have been dumb enough to do it myself but I didn't have 
room enough on my small lot to get the guy wires out far enough to go far 
enough to guy 80 feet of tower.

25G tower (when built to rohn specs) uses a 4 wire guy system below the 
hinge & 3 guys at the top.  There is quite a lot of  weight/moment 
consideration when the  the antenna is cranked about 2/3 of the way up.  You 
may have to  do some reinforcing to the building where you bracket the legs 
to the building.    Initially that tower performed well.  Once totally 
vertical, the counterweight/boom is pinned and extra bolts go into the tilt 
over section .  That means  you still have to climb to 40 feet to take the 
bolts out to crank it down up and then go back up and put the bolts back in 
when done but at least no antenna work had to be done on the tower.   I had 
a TH-6 with an 11EL 2m beam 10 feet above the TH-6 on a heavy duty mast..

I no longer have this tower as a "tilt over" because we had a winch lock 
failure when the tower was being cranked vertical.  when It got up 3/4 of 
the way , the winch brake "released" on its own  allowing the cable to 
unreel unimpeded by friction  and in about 1.2 seconds that whole top 
section "swung"  back to the ground pulverizing the antenna, breaking the 
welds at the hinges and bent  the counter weight boom section.  Two other 
sections of 25G were bent and it absoluely "PULVERIZED" the antennas and 

Luckily no one was hurt

I always thought the winch cable was the weak point so I detached the winch 
and kept it inside to keep it from rusting.  It only took about 10 minutes 
to re install the winch when the tower needed to be tilted.  As it turns out 
the tower itself was rugged but the "winch brake" and not the cable was the 
weak point  Take care when winching it vertical.

press on regardless


Chet  N6ZO
----- Original Message ----- 
From: "Justin Wilson" <>
To: <>
Sent: Monday, February 20, 2006 12:42 PM
Subject: [TowerTalk] Foldover at roof level?

> Anyone ever done a light folder over (rohn 20-25) at roof level? I
> have a tower going up that is bracketed to the wall of an office building.
> I would like to have it fold over right above the roofline so I could fold
> the tower over onto the roof.
> Bad idea? Good idea?
> Thanks,
> Justin
> --
> Justin S. Wilson <>
> Web:
> Web:
> _______________________________________________
> _______________________________________________
> TowerTalk mailing list


TowerTalk mailing list

<Prev in Thread] Current Thread [Next in Thread>