[Rhodes22-list] Compass

[Bob Weber]

Silm, Brad is right as usual.  If you are going to use that compass for 
anything other than getting a general idea of where the dock is, get it done 
professionally.  It is a Pita and there are many other factors in play.  The 
boats electronic panel is likely on the inside of the companionway under the 
wash board where the compass is mounted.  Getting a deviation table can be 
complex.  A hand held compass is a good alternative to get you a more 
accurate bearing.  BW

>From: brad haslett <flybrad at yahoo.com>
>Reply-To: The Rhodes 22 mail list <rhodes22-list at rhodes22.org>
>To: The Rhodes 22 mail list <rhodes22-list at rhodes22.org>
>Subject: Re: [Rhodes22-list] Compass
>Date: Wed, 6 Apr 2005 19:21:49 -0700 (PDT)
>
>Slim,
>
>Forgive me for being cute.  The compass is a very
>important instrument.  The answer to your question is,
>HELL YES, the compass will point to the magnet in the
>speaker.  Move the speaker, or the compass.  Lucky
>Lindy missed his mark on the Irish coast by three
>miles on a compass, so it works by itself.  I've
>personally flown airplanes 7 hours on a compass and
>found my way, scared as hell, but not lost!  You will
>have to recalibrate the compass once the speaker
>magnet is moved.  There should be two screws,
>North/South and East/West.  Use a GPS or the sun to
>figure out what true NS, EW is and correct for
>magnetic variation.  Its been a long time since I was
>an aircraft mechanic and I'm navigating this week on
>PFM (pure f***ing magic) but I'll get out the old
>manuals when I get home and look up the specific
>procedure.  In the meantime, buy a $5 camping compass
>from WalMart as a spare, if for no other reason than
>to can live the old Chinese proverb;  man with two
>watches never know what time it is!
>
>Brad
>
>
>--- Steve Alm <salm at mn.rr.com> wrote:
> > Brad,
> >
> > Sorry, I'm not sure I understand you.  Are you
> > saying that the compass's
> > proximity to the speaker magnet will NOT hurt the
> > compass because that's
> > what it's intended to do--point to the magnet--and
> > everything should be OK
> > now that I've removed said magnet?
> >
> > Slim
> >
> > On 4/6/05 8:02 PM, "brad haslett"
> > <flybrad at yahoo.com> wrote:
> >
> > > Slim,
> > >
> > > Forgive me for sounding like Alex Trabec from
> > > Jeopordy;  What is a compass?
> > >
> > > Brad
> > >
> > >
> > > --- Steve Alm <salm at mn.rr.com> wrote:
> > >> The previous owner of my boat had a removable six
> > >> inch high board that sat
> > >> across the companionway.  On it he mounted a
> > compass
> > >> AND an auxiliary
> > >> speaker for the radio.  An ill-fated feat of
> > >> engineering since the compass's
> > >> proximity to the speaker (magnet) rendered the
> > >> compass useless right from
> > >> the get go. Needless to say, I've never used the
> > >> thing and it's been stored
> > >> in my garage all these years.  But I pulled it
> > out
> > >> the other day and removed
> > >> the speaker.  The compass now seems to point
> > north
> > >> OK but I'm wondering if
> > >> it's damaged or compromised by sitting next to
> > the
> > >> magnet all this time.
> > >> It's a Ritchie B-80.  It has what I assume to be
> > a
> > >> calibration screw on the
> > >> front, but I don't know how to calibrate or test
> > a
> > >> compass.  Any advice?
> > >>
> > >> Thanks,
> > >>
> > >> Slim
> > >>
> > >>
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