FW: [Towertalk] RD1800

[Fred Helmstetter]

-----Original Message-----
From: Jim White [mailto:k4oj@tampabay.rr.com]
Sent: Tuesday, May 14, 2002 8:04 PM
To: fhelmstetter@wi.rr.com
Subject: Re: [Towertalk] RD1800


you should share this with the group

OJ


----- Original Message -----
From: "Fred Helmstetter" <fhelmstetter@wi.rr.com>
To: "Jim White" <k4oj@tampabay.rr.com>
Sent: Tuesday, May 14, 2002 8:25 PM
Subject: RE: [Towertalk] RD1800


>
>
> Hey Jim,
>
> Put one up last weekend on Rohn 45.  You have to wiggle it a little but if
> you have a clear section with no guy bracket, large feedlines inside, etc
it
> should go in fine.  I had to remove my shelf and then reinstall it to make
> room with my config. Good to have an extra set of hands with you - it
get's
> heavy after a short while.
>
> 73,
> Fred, N9FH
>
> > -----Original Message-----
> > From: towertalk-admin@contesting.com
> > [mailto:towertalk-admin@contesting.com]On Behalf Of Jim White
> > Sent: Sunday, May 12, 2002 7:55 PM
> > To: KI7WX@aol.com; TowerTalk@contesting.com
> > Subject: Re: [Towertalk] RD1800
> >
> >
> > The fact that it is a cylinder versus a bell makes me wonder if it will
> > still slide into my tower oin the diagonal like the T2X just barely
making
> > it does....if, it is larger in diameter is it shorter in height -
> > or - is it
> > necessary to cripple a diagonal brace to make it fit?
> >
> > OJ
> >
> >
> > ----- Original Message -----
> > From: <KI7WX@aol.com>
> > To: <TowerTalk@contesting.com>
> > Sent: Sunday, May 12, 2002 3:44 PM
> > Subject: [Towertalk] RD1800
> >
> >
> > >
> > > Craig does have a winner on his hands. Nice rotator and well
> > worth a look
> > for folks that are tired of rebuilding T2X's.
> > >
> > > 1) A note about installation. The RD1800 is a cylinder shape
> > and there is
> > no easy way to grip it for hauling up the tower. In the first one I had
> > hands on, the rotor came with a screw eye that is inserted into the top
of
> > the rotor. That eye lets you attach your pull rope to the rotor to haul
it
> > up. Looked like a good idea.
> > >
> > > Be aware that when items are hauled up a tower on a rope they will
often
> > rotate. If a screw-eye attachment point rotates the wrong way you
> > might find
> > a rotor dropping away from your haul rope at ~9.9 m/s^2.
> > >
> > > 2) On N6RO's initial RD1800 we had a problem with a little
> > nylon gear that
> > drives the indicator potentiometer slipping on it's shaft. When that
gear
> > slips the rotor still rotates, but you don't see any evidence of it on
the
> > indicator box. Craig is going to change that design, but if your rotor
has
> > this little gear simply press fit to the shaft (intial design), you
might
> > want to modify it before installation. We used some super glue to
> > fix Ken's
> > on the tower and so far that's held, but I doubt that it'll be a
permanent
> > fix.
> > >
> > > 3) For use in side mount applications - the footprint of the RD1800 is
a
> > bit wider than the M2-Orion, T2X, and Yaesu rotors. On some swinging
gate
> > type antenna mounts the rotor won't fit properly and you'll need to make
> > some spacer blocks to get everything to fit.
> > >
> > > Such is life with rotors...I'd still buy the RD1800 in a
> > heartbeat and am
> > looking forward to seeing how they hold up in use.
> > >
> > > Mark
> > > KI7WX
> > >
> > >
> > > _______________________________________________
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> > > http://lists.contesting.com/mailman/listinfo/towertalk
> > >
> >
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