[TowerTalk] Swinging gate antenna mount

[Big Don]

I have had one up for 30 years. A Ham4 and 402CD using W8JGU sidemount.
Dunno if available anymore.
There is a fairly close up photo of it on my QRZ if you scroll down near
the bottom of page.
Using a graphics program, I made a custom meter face for the controller so
it is clear where you can't go.

If arm should hit the tower with my setup, it's no big deal, it just
stops/stalled, doesn't damage anything
but would not make a habit of it. Suppose it might burn out the motor if
left driving *ON* after it stops.
With a more serious rotator, e.g., prop pitch or 2800, I suppose it could
damage the rotator.
If you have one of those fancy setups where you just punch in a beam
heading or DX prefix, you might
need limit so it doesn't self-destruct......

73,  Don  N7EF

On Fri, Jun 5, 2020 at 2:39 PM Robert Harmon <k6uj at pacbell.net> wrote:

> Dumb question.   When using the swinging gate, how do you make sure when
> the rotator swings it around it won't hit the tower ?
>
>
> Bob
> K6UJ
>
>
>
> > On Jun 5, 2020, at 1:52 PM, Grant Saviers <grants2 at pacbell.net> wrote:
> >
> > I have a Rohn 65 design in CAD, never built it, went with rings
> instead.  Should have done the arms.  All 1/4" HRS steel plate, standard
> angles and channel, plus 2" NPT pipe, although other tube/pipe choices are
> easy.  Different leg diameters depend on the u-bolt size (minor hole
> location change needed). Designed for hot dip galvanizing.  I designed for
> two antennas for up to 20' of pipe between top bearing and rotator. Or one
> antenna on a short pivot "mast". Uses a standard mount rotator at the
> bottom (my plan was Orion 2800) and a UHMW bearing at the top.  Make the
> plates on a laser or waterjet cutter.  Weld it up and HDG.
> >
> > Reply off list and I well send 3D pdf's to review. Enough interest and
> some weld shop might make them.  Everything should UPS except the pipe, buy
> it locally.  Adding tabs and slots to the top and bottom supports for self
> fixturing of the welding would be nice.
> >
> > Grant KZ1W
> >
> > On 6/5/2020 11:46, Jon Zaimes via TowerTalk wrote:
> >> Try here: http://www.w9iix.com/ii00012.htm
> >> Jon P. Zaimes, AA1K
> >> Tower climber for hire
> >> Website: aa1k.us
> >> Cell: 302-632-2353
> >> Email: jz73 at verizon.net
> >> Hug your favorite tower every day, and always stay connected to it
> >> On Friday, June 5, 2020 mike stokes <mike9v at gmail.com> wrote:
> >> I am looking for one as well.  Please reply to the list.
> >> 73
> >> Mike
> >> KK9V
> >> On Fri, Jun 5, 2020 at 2:20 PM Ignacy Misztal <no9e at arrl.net> wrote:
> >>> Does anybody make swinging gate mounts? I need one for 45G.
> >>> Ignacy, NO9E
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