I agree with Roger. I have a permit to pass here and the inspection will not
look kindly on a
Tower that has been cut and modified I am sure. It's simple enough to go buy a
longer mast.
Hopefully someone can use this nice thick wall 8 foot alloy boom that I bought
to use as a
mast!
On 10 May 2015 at 17:18, Steve Maki wrote:
> I lean toward mounting rotators a little further down in the tower, even
> just 2 or 3 feet further down. The top spot on R25 has no diagonals and
> it's a very weak point in any install that has much wind loading above
> the tower top. I've seen R25's fail right there.
>
> If you select a location in the middle of the section, it's easy enough
> to fab a bolt-on replacement for whatever structural members are
> removed. This way rotator servicing is a breeze and the installation is
> much stronger.
>
> -Steve K8LX
>
> On 5/10/2015 2:44 PM, Roger (K8RI) on TT wrote:
>
> > Cutting a brace is not an option to me. Why cut a brace which is
> > structural? You are trying to fit a shelf or metal plate, which is not
> > structural, into a tower section. It makes sense to cut the non
> > structural insert/shelf/plate. I do remember that I could not insert
> > the rotator (Ham IV) between braces and had to lower it down through the
> > section while others could (It's in the archives), so there must be some
> > variability in the brace spacing, or 25G look alike towers. In your
> > case if the rotator would not fit between the braces, you would need to
> > insert the rotator first (from the bottom of the section and move up the
> > section, then insert the shelf where it would fit modified if necessary
> > as I don't think lowering from the top is not an option.
> >
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