Today's Message Index:
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1. 04:40 AM - Re: Another remote compass solution ()
2. 05:30 AM - Re: Leather supplier (Greg Young)
3. 09:53 AM - Re: Re: Another remote compass solution (Dave Cudney)
4. 04:30 PM - Re: Re: Another remote compass solution (Sam Buchanan)
5. 04:42 PM - You've gotta read this (Jerry Hansen)
Message 1
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| Subject: | Re: Another remote compass solution |
All of you right. A few notes
The electric Ritchie boat compass is not made any more, so
if you get one its old new stock. You may find them hard to
get now. I was going to use one and bought it. I decided to
get a Dynon EFIS, which as a mag compass, so I did not
use it.
GPS has made the compass obsolete?
True ATC wants us to fly heading, usually, but if VFR with a
GPS "Track" is way better any day. If you have TRACK why
in the world would you care or need mag heading? (smile
laugh). Seriously you are not dead reckoning with a GPS on
board. I look at the compass rarely, may be to double check
the EFIS. On the Boeing B737 there is a wet compass,
folded up and out of view most of the time.
For Day VFR experimental, a "whisky" or "jelly jar"
compass of ANY KIND is needed for day VFR!
Reference the link below. (periheliondesign.com has all kind
of cool electrical stuff for RV builders.)
http://www.periheliondesign.com/downloads/MINIMUM%20INSTRUMENT%20AND%20EQUIPMENT%20REQUIREMENTS.pdf
No compass is needed at all in an experimental for day
VFR (see above). Think about how much you really ever
used a wet compass in the past. In the past we used it to set
the vacuum powered DG. I fly a no electric J-3
sometimes and dead reckon. Yes it has a use but with GPS,
not much. However the advice below is probably good advice:
"GPS should be used in conjunction with dead reckoning,
not to replace it. Electronics are man-made and subject to
failure without warning." (no argument)
As a CFI and instrument instructor in the past I taught all
kinds of compass trivia and lead/lag-dip, but really it's not
practical for much. If the GPS goes out a heading would be
nice of course, but I hate instruments that lie. I almost rather
no compass than one that's useless, assuming you are VFR
and have GPS of some kind.
Cheers George
---------------------------------
Message 2
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| Subject: | Leather supplier |
I bought leather from B&B to do both my RV and Navion. They have a lot more
than what they bring to Oshkosh & Sun N Fun. I got a sample at SnF and
called them a few weeks later. I got 6 hides and they made sure they were
all from the same dye lot. Excellent quality at $135/hide. It was a good
deal for me particularly since I got to see and touch it before I bought.
Apparently they are Cessna surplus since my color was tagged as Caravan
Charcoal. Nice folks to deal with. Plan on a check or COD since they don't
do credit cards. They are in the Yeller Pages:
B&B AIRCRAFT SUPPLIES 913-884-5930 AN HARDWARE, AIRCRAFT SURPLUS AND LEATHER
SEAT SKINS
Regards,
Greg Young - Houston (DWH)
RV-6 N6GY - project Phoenix
Navion N5221K - just an XXL RV-6A
> <aerobubba@earthlink.net>
>
> Hi Ted-
>
> >Does anyone know of a source for leather to upholster my seats?
>
> B&B Aircraft used to bring quite a selection to OSH. I don't
> know anything about the leather market, but their prices for
> aircraft hardware and electrical bits were certainly among
> the best on the field.
>
> glen matejcek
> aerobubba@earthlink.net
>
>
4:55 PM
Message 3
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| Subject: | Re: Another remote compass solution |
I was going through the same ruminations a week or so ago as to
wether or not a Dynon D 100 would classify as a "magnetic compass".
It does have a magnetrometer , but requires power for it to work ---
and I do have a back up battery in the D 100 which is supposed to
work for about 1 1/2 hours after power failure. As opinions were
split as to wether this would suffice, I decided to use a Pegasus
whiskey compass from S.I.R.S. which I got from AC Spruce for $200.
The compass is TSOD as a backup AC compass. So far I am impressed
with how compact, light, and durable it seems to be. Luckily I found
a spot for it in the panel where it is unaffected by any stray
magnetic fields. I now have five devices in the aircraft which will
give me heading information not including VOR --- seems like overkill
particularly when I'll probably use the 396 in the gismo mount most
of the time.
The gist of the opinions I got from folks who have gone through the
process was that it all depends on the DAR that you get as to wether
or not you need a non powered, whiskey type compass. I decided not
to tempt fate and got the Pegasus. It doesn't weigh much more than
the metal in hole I cut out of the panel for it.
good luck
dave
On Aug 27, 2007, at 4:39 AM, <gmcjetpilot@yahoo.com> wrote:
> All of you right. A few notes
>
> The electric Ritchie boat compass is not made any more, so
> if you get one its old new stock. You may find them hard to
> get now. I was going to use one and bought it. I decided to
> get a Dynon EFIS, which as a mag compass, so I did not
> use it.
>
> GPS has made the compass obsolete?
>
> True ATC wants us to fly heading, usually, but if VFR with a
> GPS "Track" is way better any day. If you have TRACK why
> in the world would you care or need mag heading? (smile
> laugh). Seriously you are not dead reckoning with a GPS on
> board. I look at the compass rarely, may be to double check
> the EFIS. On the Boeing B737 there is a wet compass,
> folded up and out of view most of the time.
>
> For Day VFR experimental, a "whisky" or "jelly jar"
> compass of ANY KIND is needed for day VFR!
> Reference the link below. (periheliondesign.com has all kind
> of cool electrical stuff for RV builders.)
>
> http://www.periheliondesign.com/downloads/MINIMUM%20INSTRUMENT%20AND
> %20EQUIPMENT%20REQUIREMENTS.pdf
>
> No compass is needed at all in an experimental for day
> VFR (see above). Think about how much you really ever
> used a wet compass in the past. In the past we used it to set
> the vacuum powered DG. I fly a no electric J-3
> sometimes and dead reckon. Yes it has a use but with GPS,
> not much. However the advice below is probably good advice:
>
> "GPS should be used in conjunction with dead reckoning,
> not to replace it. Electronics are man-made and subject to
> failure without warning." (no argument)
>
> As a CFI and instrument instructor in the past I taught all
> kinds of compass trivia and lead/lag-dip, but really it's not
> practical for much. If the GPS goes out a heading would be
> nice of course, but I hate instruments that lie. I almost rather
> no compass than one that's useless, assuming you are VFR
> and have GPS of some kind.
>
> Cheers George
>
>
Message 4
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| Subject: | Re: Another remote compass solution |
Just for the sake of the DAR I splurged on a suction cup compass from
Walmart, less than $5 as I recall. The compass was tossed into the
flight bag once he left the airport. He did say I would need a
correction card...... ;-)
Sam Buchanan
RV-6 Classic, 812 hrs
===================================
Dave Cudney wrote:
> I was going through the same ruminations a week or so ago as to wether
> or not a Dynon D 100 would classify as a "magnetic compass". It does
> have a magnetrometer , but requires power for it to work --- and I do
> have a back up battery in the D 100 which is supposed to work for about
> 1 1/2 hours after power failure. As opinions were split as to wether
> this would suffice, I decided to use a Pegasus whiskey compass from
> S.I.R.S. which I got from AC Spruce for $200. The compass is TSOD as a
> backup AC compass. So far I am impressed with how compact, light, and
> durable it seems to be. Luckily I found a spot for it in the panel
> where it is unaffected by any stray magnetic fields. I now have five
> devices in the aircraft which will give me heading information not
> including VOR --- seems like overkill particularly when I'll probably
> use the 396 in the gismo mount most of the time.
>
> The gist of the opinions I got from folks who have gone through the
> process was that it all depends on the DAR that you get as to wether or
> not you need a non powered, whiskey type compass. I decided not to
> tempt fate and got the Pegasus. It doesn't weigh much more than the
> metal in hole I cut out of the panel for it.
>
> good luck
> dave
Message 5
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| Subject: | You've gotta read this |
http://www.avweb.com/news/ceocockpit/ceo_of_the_cockpit_73_those_devilish_li
ttle_airplanes_195936-1.html
Jerry Hansen
Gillespie Field, CA
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