[TowerTalk] Installation Rohn 25G

[Russell Hill]

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 at sbcglobal.net>
To: <towertalk at 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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