[MRCG] Solid State Vibrators

[scottjohnson1]

Many altimeters have an " anti-stiction device" built in, which emits a 10 hz or so clicking noise.  Many panels use panel shakers.  The Link trainers used a small shaded pole motor with an eccentric weight on the shaft.  The motor was bolted to the back of the panel.  This pre-dated the Chuck Yeager anecdote by nearly a decade.  Instrument sticking is a problem in most aircraft the don't  have an engine in the nose.ScottSent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: Tim <timsamm at gmail.com> Date: 4/15/22  12:37  (GMT-07:00) To: West Coast Military Radio Collectors Group <mrcg at mailman.qth.net> Subject: Re: [MRCG] Solid State Vibrators "Percussive Maintenance".......On Fri, Apr 15, 2022 at 12:14 PM Glen Closson <glen.closson at gmail.com>wrote:> Hi Tim,> Cool story!>> Another reason to just whack uncooperative equipment.  :)>> On Fri, Apr 15, 2022 at 12:10 PM Tim <timsamm at gmail.com> wrote:>> > Hi Glen!  Chuck Yeager wrote about problems in the Bell X-1 aircraft with> > the panel instrument needles "sticking" at times.  In a prop aircraft> that> > is not a problem because of all the vibration going on.  The X-1 was so> > smooth the needles kept sticking (a problem with an altimeter for> example)> > So they attached some kind of big buzzer to the panel to keep everything> > moving properly... Improvise, Adapt, Overcome !  hihi> > Tim> > N6CC> >> > On Thu, Apr 14, 2022 at 8:55 PM Glen Closson <glen.closson at gmail.com>> > wrote:> >> > > Cool!> > >> > > I hope they include a little buzzer to emulate the old ones.  :)> > >> > > On Thu, Apr 14, 2022 at 8:48 PM W6MQI via MRCG <mrcg at mailman.qth.net>> > > wrote:> > >> > > > https://www.royalsignals.org.uk/vibs/> > > > Thought these were kind of interesting 6v, 12v, 24v solid state> > vibrator> > > > replacements if anyone is in dire need of a vibrator for an old rig.> > > >> > > > Dave> > > >> > > > Sent with [ProtonMail](https://protonmail.com/) secure> > > > email.______________________________________________________________> > > > MRCG mailing list> > > > Home: http://mailman.qth.net/mailman/listinfo/mrcg> > > > Help: http://mailman.qth.net/mmfaq.htm> > > > Post: mailto:MRCG at mailman.qth.net> > > >> > > > Website: http://www.mrcgwest.org> > > >> > > > This list hosted by: http://www.qsl.net> > > > Please help support this email list: http://www.qsl.net/donate.html> > >> > >> > >> > > --> > > Succinctly,> > >> > > Glen> > > -------> > > Tired of scam phone calls?  Do what I do, waste their time by giving> them> > > random information!  Try it!  It's fun!  Now they just hang up rather> > than> > > talk to me.  :)> > > ______________________________________________________________> > > MRCG mailing list> > > Home: http://mailman.qth.net/mailman/listinfo/mrcg> > > Help: http://mailman.qth.net/mmfaq.htm> > > Post: mailto:MRCG at mailman.qth.net> > >> > > Website: http://www.mrcgwest.org> > >> > > This list hosted by: http://www.qsl.net> > > Please help support this email list: http://www.qsl.net/donate.html> > ______________________________________________________________> > MRCG mailing list> > Home: http://mailman.qth.net/mailman/listinfo/mrcg> > Help: http://mailman.qth.net/mmfaq.htm> > Post: mailto:MRCG at mailman.qth.net> >> > Website: http://www.mrcgwest.org> >> > This list hosted by: http://www.qsl.net> > Please help support this email list: http://www.qsl.net/donate.html>>>> --> Succinctly,>> Glen> -------> Tired of scam phone calls?  Do what I do, waste their time by giving them> random information!  Try it!  It's fun!  Now they just hang up rather than> talk to me.  :)> ______________________________________________________________> MRCG mailing list> Home: http://mailman.qth.net/mailman/listinfo/mrcg> Help: http://mailman.qth.net/mmfaq.htm> Post: mailto:MRCG at mailman.qth.net>> Website: http://www.mrcgwest.org>> This list hosted by: http://www.qsl.net> Please help support this email list: http://www.qsl.net/donate.html