[ARC5] ARC5 Digest, Vol 94, Issue 29

[Dennis Monticelli]

I think it should handle vibration well.  It should handle shocks pretty
well also once mounted.  But when a shipper drops it on its side on a hard
surface, the inertia of the massy rollerductor keeps it moving after
impact, causing a lot of bending force on the ceramic bracket that attaches
it to the front panel.

Dennis AE6C

On Wed, Nov 16, 2011 at 10:04 AM, James Cole <jim at hyperlabs.com> wrote:

> I an surprised to hear of shipping damage in the ARC-5 TX .... wasn't it
> designed for rather severe shock & vibe conditions?
>
> Thanks - Jim N3ZJ
>
> On Wed, Nov 16, 2011 at 9:00 AM, <arc5-request at mailman.qth.net> wrote:
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> > Today's Topics:
> >
> >   1. Re: Command TX Repairs (J. Forster)
> >
> >
> > ----------------------------------------------------------------------
> >
> > Message: 1
> > Date: Wed, 16 Nov 2011 07:58:32 -0800 (PST)
> > From: "J. Forster" <jfor at quikus.com>
> > Subject: Re: [ARC5] Command TX Repairs
> > To: "Dennis Monticelli" <dennis.monticelli at gmail.com>
> > Cc: ARC-5 List <arc5 at mailman.qth.net>, Dennis pharr
> >        <wd5jwy at gmail.com>,     Roy Morgan <k1lky at earthlink.net>
> > Message-ID: <1144.12.6.201.41.1321459112.squirrel at popaccts.quikus.com>
> > Content-Type: text/plain;charset=iso-8859-1
> >
> > Many hardware stores sell steel bearing balls in those sets of
> > miscellaneous hardware they have. In WW II all balls were in fractional
> > inch sizes, I( think.
> >
> > -John
> >
> > ===================
> >
> >
> > > Improper packing of a transmitter I bought at auction resulted in
> > > dislodging of some of the ball bearings but thankfully not the glass
> > > balls.  This rig broke a rollerductor ceramic supporting arm also.
>  With
> > > effort I located all but one of the tiny ball bearings in the bottom of
> > > the
> > > box among the sparsely supplied styrofoam peanuts and then managed to
> > > reinsert them.  The rotor turns just fine with only one steel ball
> > > missing.  I got a new ceramic arm from a junker.
> > >
> > > Dennis AE6C
> > >
> > >
> > > On Mon, Nov 14, 2011 at 8:43 PM, J. Forster <jfor at quikus.com> wrote:
> > >
> > >> On most variable caps, the inner end of the shaft has a single ball
> as a
> > >> thrust & rotation bearing. The other end has a ring of balls in thrust
> > >> and
> > >> the shaft goes through the center of the ring. The shaft is the inner
> > >> race, the frame the outer race.
> > >>
> > >> -John
> > >>
> > >> ==============
> > >>
> > >>
> > >> >
> > >> > On Nov 14, 2011, at 11:04 PM, Dennis pharr wrote:
> > >> >
> > >> >> ... And, if the
> > >> >> suspension beads are gone, it's likely the ball bearings have
> fallen
> > >> >> out as
> > >> >> well.
> > >> >
> > >> > If I remember right: the glass suspension beads hold the stators in
> > >> > place, and the ball bearings hold one (or both) ends of the rotor in
> > >> > place.
> > >> >
> > >> > Roy
> > >> >
> > >> > Roy Morgan
> > >> > k1lky at earthlink.net
> > >> > K1LKY Since 1958 - Keep 'em Glowing!
> > >> >
> > >> >
> > >> >
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> > End of ARC5 Digest, Vol 94, Issue 29
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