[ADXA] rotator mast pinning

[Dennis Schaefer]

Thanks, Jussi.  I’ve always thought that once you drill all the properly
aligned holes and put the bolt through, you have created a potential
weakness which can be exploited by rotation stress enlarging the holes.
There were several stories about bolts shearing from this effect, and you
actually had a mast failure!

73,
Dennis/RZ

On Sat, Sep 7, 2024 at 9:02 PM Jussi Eloranta <eloranta at aa6kj.hopto.org>
wrote:

> Well, my experience with pinning is a failing mast pipe. It started
> developing a fracture that slowly progressed and the pipe finally snapped,
> bringing down the antenna!
>
> My current gear is pretty lightweight, so if the alignment gets out of
> whack, I will just fix it (rotate). No more pinning for me but all that
> depends how easily it can be fixed...
>
> Jussi (AA6KJ)
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