Bracketing gives a longer lever arm and helps prevent the short lever arm of
the base from being levered over by the entire tower height. In effect the
support arm is now much longer, and the bending arm-- the tower above the
pivot point-- is now shorter. So the ratio of lever arm above the pivot
point vs the lever arm below the pivot point has been dramatically improved.
73,
Rusty, na5tr
----- Original Message -----
From: "AD5VJ Bob" <rtnmi@sbcglobal.net>
To: <towertalk@contesting.com>
Sent: Sunday, November 11, 2007 7:52 PM
Subject: Re: [TowerTalk] Installation Rohn 25G
> One thing I dont yet understand:
>
> Why does the house bracketing seem to make such a big difference?
>
> Is it equivalent to putting in the ground further thereby lowering the
> balance point or does it stabilize it from vibration that
> much or what?
>
> Bob AD5VJ
>
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