[TowerTalk] Big Rak and HDX-555

[Big Don]

Actually, the *tower* you have this on can make a difference. Our 80 ft of
Rohn25 makes a pretty slick torsion bar for absorbing rotational shocks
that might otherwise cause slip at the clamp (or damage to the rotator).
The twist is quite noticeable when actuating the rotator while we are
personally on the tower at the top, a brief maybe 10 degrees twist
(probably somewhat more during windstorms). Suspect a seriously
rugged/rigid tower won't provide that cushion. Our tower has survived 40
years with no broken welds on the lattice, deflections appear to be
well-within elastic limits......
73  Don  N7EF

On Sun, Aug 26, 2018 at 8:36 PM Kent Olsen <kilo6dko at gmail.com> wrote:

> Jim
>
> No one is calling you a liar. I may call you lucky.
>
> 73
> Kent
> N6WT
>
> On Sun, Aug 26, 2018, 20:08 Jim <jimw7ry at gmail.com> wrote:
>
> > Are you calling me a liar Les?
> >
> > Sure sounds like it from your instance.
> >
> > I've been on tower talk for a very long time. And I know the history of
> the
> > OR2800 reports of slippage and the controller does not work.
> >
> > I have had not had these problems.
> >
> > 73
> > Jim W7RY
> >
> >
> >
> >
> >
> >
> > -----Original Message-----
> > From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
> Les
> > Kalmus
> > Sent: Sunday, August 26, 2018 9:27 PM
> > To: towertalk at contesting.com
> > Subject: Re: [TowerTalk] Big Rak and HDX-555
> >
> > Because the controller tends to miss and thus miscount the pulse counting
> > signals from the rotor and winds up displaying a different direction than
> > the antenna is actually pointing. Also, the circuitry in the controller
> > that
> > provides the counting signal is noisy. In my case at times I couldn't
> hear
> > anything while the rotor was turning. Replacing the stock controller
> with a
> > Green Heron cured that problem as well as the miscounting issue.
> >
> > The stock clamp does indeed slip no matter how it's torqued.
> >
> > Les W2LK
> >
> >
> > On 8/26/2018 7:38 PM, Jim wrote:
> > > I have an older OR2800 with the M2 controller. Used it with N1MM and
> > > never had an issue of any kind with the rotor or controller.
> > >
> > > It works great!  I had it on a TH7 with a XM240 above it on a 70' Rohn
> > 45.
> > >
> > > Stock mast clamp. NEVER did it slip in the 14 years I had it up.
> > >
> > > I'm puzzled why you would think the mast clamp and controller are junk?
> > >
> > >
> > > 73
> > > Jim W7RY
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: TowerTalk [mailto:towertalk-bounces at contesting.com] On Behalf Of
> > > john at kk9a.com
> > > Sent: Sunday, August 26, 2018 3:03 PM
> > > To: towertalk at contesting.com
> > > Subject: Re: [TowerTalk] Big Rak and HDX-555
> > >
> > >  From what I have read on towertalk, it is a good rotator if you throw
> > > away the mast clamp and controller.
> > >
> > > John KK9A
> > >
> > >
> > > From: Kent Olsen <kilo6dko at gmail.com>
> > > Date: Sun, 26 Aug 2018 08:14:01 -0700
> > >
> > > Phil
> > >
> > >
> > > I went with the M2 Orion 2800 rotor. It fits in the tower completely.
> > > It has been up for 3 years with a SteppIR DB36 with a NN4ZZ tilt
> > > plate. This is a very heavy combo, I have not had a bit of trouble.
> > >
> > > Thanks
> > > 73
> > > Kent
> > > N6WT
> > >
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