They actually make mounts for just that kind of mounting and stuff, I 
wouldn't put a big beam on it, but for a smallish beam, with a reasonably 
low wind load, you should be good, I'd put 75 LB sand bags though at the 
least, I like to go overkill on my projects, but with something like that, 
it's better to go over than under. If you have a cushcraft beam in mind, 
check out there site, I believe they have wind load ratings and stuff right 
on the site or in the downloadable documentation.
----- Original Message ----- 
From: "Colin McDonald" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, March 29, 2007 12:33 PM
Subject: roof mounting tripod


>I mentioned in my last post about mounting a tripod or support structure on
> a pitched roof for a small beam, likely 3 element 10, 15 and 20M 
> cushcraft.
> I am not able to bolt the tripod or support structure to the roof, but may
> be able to use heavy sand bags or other large heavy leg anchors.
> Has anyone used something like this, and if so, what was the 
> configuration?
> I think something like a four legged stand that goes across the peak of 
> the
> roof with 50 or 75 pound sand bags on each leg should be enough, but I'm 
> not
> sure.
> Also, how low can I put the beam above the roof to avoid swr changes as I
> turn it?  The idea is to make sure the thing won't blow away in the first
> good wind, but I don't need to over do it either.
> How heavy are the cushcraft tribanders and what is the wind load and so 
> on.
> 73
> Colin, V A6BKX