[amsat-bb] Yaesu G-5500 rotator boom mounting

[Bob Hammond]

Thanks everyone for the ideas.

In my situation, I use a 1.25" solid fiberglass rod as the cross boom with
a split PVC pipe shim inside the EL rotor.
I used strips of 3M anti-slip tape between the fiberglass rod and the PVC
pipe for added friction where clamped.

This has worked quite well until we had temps near 100 F.  I think the
anti-slip tape adhesive got soft and started slipping.
Part of the problem is that my three antennas are mounted on the end of
their booms so there's a fair amount of torque/moment arm on the cross boom
and the clamping area.

I'll put my antenna counterbalance back on the cross boom opposite the
antennas and that should take care of the issue during hot weather.  I had
removed it thinking the less mass to rotate/elevate would make my rotor
gears last longer.

Bob W7OTJ

On Fri, Aug 7, 2020 at 11:02 AM Ed Krome <e.krome at comcast.net> wrote:

> Just the included clamps have proven adequate for a pair of 12’ long
> yagis.
>
> Ed Krome K9EK
>
> Sent from my iPhone
>
> > On Aug 7, 2020, at 12:35 PM, Bob Hammond via AMSAT-BB <
> amsat-bb at amsat.org> wrote:
> >
> > How do others attach their fiberglass boom to the elevation rotor on a
> > G-5500?  Just use the boom clamps provided?  Make a sleeve to fit between
> > the smaller fiberglass boom and elevation rotor inside diameter?  Drill a
> > hole and pin it?
> >
> > All ideas appreciated.
> >
> > Bob W7OTJ
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>