Today's Message Index:
----------------------
1. 05:35 AM - Re: Undercarriage Stiffeners (LarryRobertHelming)
2. 06:07 AM - "swiss muffler" (Ted Hultzapple)
3. 06:37 AM - Wood prop 4 sale (Brian Alley)
4. 07:26 AM - Re: Re: What would your perfect EHSI look like? (Finn Lassen)
5. 08:18 AM - Re: blood & guts (steve blackwell)
6. 10:53 AM - Re: "swiss muffler" (Thomas Wimmer)
7. 01:57 PM - Dynon market research (Gordon Robertson)
8. 03:36 PM - Re: blood & guts (Dave Bristol)
9. 06:07 PM - Re: Dynon market research (Robin Wessel)
10. 07:23 PM - Re:"swiss muffler" (Oldsfolks@aol.com)
11. 07:52 PM - Re: Re: Dynon market research (James E. Clark)
Message 1
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| Subject: | Re: Undercarriage Stiffeners |
--> RV-List message posted by: "LarryRobertHelming" <lhelming@sigecom.net>
I have not flown my plane yet, but I have installed the landing leg gear
dampeners/stiffeners in less than 6 hours total time over a couple days
(waiting for epoxy to cure) and the cost is less than $20. However, it does
require some fairly precise angled wood cutting/filing or you can order the
ready cut wood, a set for both legs for $40. It is in the archives. I like
to call mine dampeners since I am sure the steel is strong and does not need
stiffening. The other thing I like about them is they hold and position
your gear leg fairings perfectly -- whether taxing or flying at 190 mph.
So, it is important to align them carefully with airflow line when you epoxy
the dampeners on the gear leg. The fairings fit around the dampeners like a
glove.
Indiana Larry, RV7 TipUp "SunSeeker"
----- Original Message -----
From: "Jerry Springer" <jsflyrv@earthlink.net>
Subject: Re: RV-List: Undercarriage Stiffeners
> --> RV-List message posted by: Jerry Springer <jsflyrv@earthlink.net>
>
> Hopperdhh@aol.com wrote:
>
> >--> RV-List message posted by: Hopperdhh@aol.com
> >
> >It is my impression that the wood attached to the gear legs is more of a
> >DAMPENER than a stiffener. If that is the case, it would reduce the
stress on the
> >gear leg by not letting it build up energy. The resultant amplitude
would
> >then be less than it would be without the dampeners.
> >
> >I'm still following this thread trying to decide what to do.
> >
> >Dan Hopper
> >RV-7A (getting close to final assembly)
> >
> >
> >
> Can't decide for you, but in my experience having several hundred hours
> without them and then
> installing them, I am much happier with them ON my RV-6.
>
> Jerry
>
>
Message 2
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--> RV-List message posted by: "Ted Hultzapple" <thultzap@rochester.rr.com>
I'm thinking of installing a "swiss" style muffler and am wondering if
anyone has any ideas or pictures of installations that would help,
particularly the isolation hangers. I did see the bit in the RVator about
noise measuring in Switzerland by Arnold Aebischer. Does anyone know if
Arnold has an email address?
Thanks,
Ted
Message 3
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| Subject: | Wood prop 4 sale |
--> RV-List message posted by: Brian Alley <n320wt@yahoo.com>
Brand new Felix prop for sale. This prop is 68DX71P
with urethane leading edge protection and fits an 0320
with 3/8" prop bolts. I've reduced my asking price to
$600. Contact me by email or call me at 304-872-7938
shop, 304-562-6800 home for more information.
=====
BRIAN ALLEY (N320WT)
CARBON FIBER COMPOSITES
304-872-7938 shop
304-562-6800 home
How are you going to win by a nose if you don't stick out your neck?
Message 4
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| Subject: | Re: What would your perfect EHSI look like? |
--> RV-List message posted by: Finn Lassen <finn.lassen@verizon.net>
I think you'll find that the most expensive part in such instruments
wold be the solid state gyro (rate sensors and accelerometers).
Once you have that unit it doesn't make economical sense to limit it's
use to only an AI or DG. However, you could use that unit to feed simple
AI and DG heads. (Actually the DG would also need a magnometer for
longer term stability.)
Finn
Amit Dagan wrote:
>--> RV-List message posted by: "Amit Dagan" <amitdagan@hotmail.com>
>
>Doug,
>First, I commend you on your request for input from the pilot/builder
>community - I would like to see the same approach to designing avionics from
>every company!
>
>Many have requested lots of features, and they are all good ideas. I would
>like to suggest going the other direction - having a very simple and cheap
>alternative to todays (yesterdays?) gyros:
>
>A simple stand-alone digital DG. a simple stand-alone AI, a simple digital
>stand alone TC.
>
>All with the same user interface we are used to (on an LCD panel though),
>but much higher reliablity, lower price ($400 a peice? is that feasable?),
>while smaller behind the panel, much lighter - that is exactly what we could
>all use.
>
>If you are looking into something less "conservative", then why not go
>all-out radical, and try something completely new. how about a real time V-N
>diagram? I'll send you a drawing of what I have in mind seperately (can't
>send attachements to the list).
>
>My thoughts.
>Amit.
>
>
Message 5
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| Subject: | Re: blood & guts |
--> RV-List message posted by: "steve blackwell" <n10557@hotmail.com>
It sound like everyone cleans with this and that --- then re-waxes...?
For 7 years now, at the end of every flying day I clean the leading edges
and prop with .......
WAX!
I clean the belly with wax also.
I teach flying full time in my aircraft and after using mothers, turtle, and
other waxes I found that
RAIN DANCE wax works best as a cleaner and repels dirt, water, dust, bugs...
goes on easy
and looks great.
Thanks for all of the great RV info
RV8 builder (steve blackwell)
Message 6
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| Subject: | Re: "swiss muffler" |
--> RV-List message posted by: Thomas Wimmer <thomas.wimmer@web.de>
Ted Hultzapple schrieb:
> --> RV-List message posted by: "Ted Hultzapple" <thultzap@rochester.rr.com>
>
> I'm thinking of installing a "swiss" style muffler and am wondering if
> anyone has any ideas or pictures of installations that would help,
> particularly the isolation hangers. I did see the bit in the RVator about
> noise measuring in Switzerland by Arnold Aebischer. Does anyone know if
> Arnold has an email address?
Don't know about arnold, but try to contact these two companies, both in
germany, selling mufflers for certified light piston aircraft.
http://www.gomolzig.de/
http://www.hliese.de/
> Thanks,
> Ted
Thomas
Message 7
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| Subject: | Dynon market research |
--> RV-List message posted by: "Gordon Robertson" <grobertson@verizon.net>
>>SNIP>>
First, I commend you on your request for input from the pilot/builder
community - I would like to see the same approach to designing avionics from
every company!
Many have requested lots of features, and they are all good ideas. I would
like to suggest going the other direction - having a very simple and cheap
alternative to todays (yesterdays?) gyros:
A simple stand-alone digital DG. a simple stand-alone AI, a simple digital
stand alone TC.
All with the same user interface we are used to (on an LCD panel though),
but much higher reliablity, lower price ($400 a peice? is that feasable?),
while smaller behind the panel, much lighter - that is exactly what we could
all use.
>>END SNIP >>
Totally agree. What I loved about Dynon from the first was the price and
the reliability and absence of vacuum. I strongly suggest that your
marketing niche is just there. Dont try to compete with BlueMountain, Grand
Rapids etc. Stay low cost and you will sell another 1000 units.
Gordon Robertson
RV8 thinking about panel
Message 8
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| Subject: | Re: blood & guts |
--> RV-List message posted by: Dave Bristol <bj034@lafn.org>
Be careful using "Goof-Off" it's also a pretty good paint remover.
Dave
>
>If it's a metal prop try Goof-Off. It's at Home Depot in the paint
>department. Not sure about a wood prop, caution on the finish.
>
>
>
>
Message 9
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| Subject: | re: Dynon market research |
--> RV-List message posted by: "Robin Wessel" <robin.wessel@verizon.net>
Based on Dynon's current product platform costs, they likely need to deliver
about $2,200-$2,500 worth of utility value.
If I were to consider the Dynon solution, I would compare it to the cost of
a mechanical DG and a CDI/OBS. This combo costs about $2,500-$3,000. If they
only delivered an electronic version of a DG and charged $2,200 because
their material cost is about the same, then it is probably not a good value.
I am totally guessing here but my guess is that the mechanicals, and the
display likely make up the bulk of the BOM so a simple electronic DG only
solution that costs $1,000 is unlikely to be a profitable venture. If they
were able to yank out one of their angular rate sensors, a couple of
pressure sensors they would likely not make up for the cost advantages of
volume and development simplification that a common hardware platform
provides. Notice how Garmin reuses their handheld platforms in order to
maximize cost savings.
Robin Wessel
RV-10 wings Tigard, OR
Message 10
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| Subject: | Re:"swiss muffler" |
Bayesian@matronics.com, spam@matronics.com, probability@matronics.com,
is@matronics.com, 44@matronics.com, to@matronics.com
--> RV-List message posted by: Oldsfolks@aol.com
Try Larry Vetterman.
He builds RV exhaust systems and is familiar with the materials and the
planes.
605-745-5932
Bob Olds RV-4 , N1191X
A&P , EAA Tech. Counselor
Charleston,Arkansas
Real Aviators Fly Taildraggers
Message 11
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| Subject: | re: Dynon market research |
--> RV-List message posted by: "James E. Clark" <james@nextupventures.com>
Robin,
I think you are correct.
I spoke with the Dynon people a year ago about a "similar" product and
talked about reducing costs to do such. The basic response was that as you
say the BOM is dominated by things that cannot easily be
removed/replaced/reduced (display etc.)
So my **GUESS** (like you) is that they MUST deliver something for which
they can charge $2000-$2500 and that they can "throw in" additional
functionality to get the "value proposition" up. The key to this value would
be software as opposed to extrea hardware.
Frankly I am amazed that they can hold the price at $2000 for the D10!
Now if they "simply" [ :-) provided the functionality of the
****$12,000-$12,500**** KI825 from Bendix-King for $2000-$2500 , I would
think they might have something. And ... I they might even be able to throw
in a few more features.
[Tried to convince a King person that the 825 could rule the universe if
they took an approach like Dynon ... didn't go over too well.]
James
> -----Original Message-----
> From: owner-rv-list-server@matronics.com
> [mailto:owner-rv-list-server@matronics.com]On Behalf Of Robin Wessel
> Sent: Saturday, May 08, 2004 9:04 PM
> To: rv-list@matronics.com
> Subject: RV-List: re: Dynon market research
>
>
> --> RV-List message posted by: "Robin Wessel" <robin.wessel@verizon.net>
>
> Based on Dynon's current product platform costs, they likely need
> to deliver
> about $2,200-$2,500 worth of utility value.
>
>
> If I were to consider the Dynon solution, I would compare it to
> the cost of
> a mechanical DG and a CDI/OBS. This combo costs about
> $2,500-$3,000. If they
> only delivered an electronic version of a DG and charged $2,200 because
> their material cost is about the same, then it is probably not a
> good value.
>
>
> I am totally guessing here but my guess is that the mechanicals, and the
> display likely make up the bulk of the BOM so a simple electronic DG only
> solution that costs $1,000 is unlikely to be a profitable
> venture. If they
> were able to yank out one of their angular rate sensors, a couple of
> pressure sensors they would likely not make up for the cost advantages of
> volume and development simplification that a common hardware platform
> provides. Notice how Garmin reuses their handheld platforms in order to
> maximize cost savings.
>
>
> Robin Wessel
>
> RV-10 wings Tigard, OR
>
>
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