[TowerTalk] Tower in the attic!
Michael McCarthy, W1NR
w1nr@eecorp.com
Thu, 20 Jan 2000 18:18:23 -0500
Gary,
Look at it again. The wood supports are bracketing the top
of the tower section, not the mast. The tube of the 25AG2 tower
section is feed through the roof and acts as the bearing for the
mast. This is roughly equivalent to bracketing to the side of
a house.
This is an attractive alternative to a Glen Martin roof top
tower and probably structurally superior.
I am already mapping out mine. I have a 12 pitch roof and
a full size uncut 25AG2 will fit nicely in my attic. This will
be in addition to my 90' tower in the back yard. A Force 12
4BA on this arrangement will be over 45' above ground and
will allow me to go to a larger 40/20 beam on my 90 footer.
No, there isn't enough space on my lot for two towers! They
have to be set back from the property lines by 100% of height.
Mike, W1NR
"Gary McDuffie, Sr." wrote:
> I can about guarantee you that you won't get that tower to be that
> stable, unless of course you guy the top of the tower within the attic,
> and even then, it will move slightly. A mast going through the roof and
> a bearing on those (look at the picture) boards that are nailed to the
> rafter will take all the side load. Obviously, you would need to mount
> the bearing on the boards in such a way that the bearing was
> perpendicular to the mast. Better yet, don't use wood. Some good angle
> stock bolted to the rafters would be even better.
--
**************** Give Every Man His Dew **************
Michael A. McCarthy, President
Everest Engineering Corporation, Consultants
4 Barnes Circle, Marlborough, MA 01752
(508) 460-6737, FAX (508) 460-7951
mailto:w1nr@eecorp.com
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