Glen Martin or Alpha Delta I think makes the roof mount that uses concrete
blocks
Brian, k5in
----- Original Message -----
From: "Colin McDonald" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, March 29, 2007 12:19 PM
Subject: Re: roof mounting tripod
> well, I have to consider getting the sand bags up to the roof.
> 100LBS is a bit much for one average guy to haul up a ladder, but 75 is
> just
> manageable.
> If they make roof top supports that can utilize sand bags, or concrete
> blocks, then that is what i need.
> any ideas as to who manufacturs them?
> 73
> Colin, V A6BKX
> ----- Original Message -----
> From: "John Miller" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, March 29, 2007 11:07 AM
> Subject: Re: roof mounting tripod
>
>
>> 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
>>
>>
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> 4:23 PM
>>
>>
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