Today's Message Index:
----------------------
1. 04:06 AM - garmin 195 (bob noffs)
2. 05:35 AM - Re: garmin 195 (Steve Thomas)
3. 07:04 AM - Re: garmin 195 (Ed Anderson)
4. 07:47 AM - Re: garmin 195 (Werner Schneider)
5. 07:51 AM - Extending capacitive fuel sensor lead? (James Kilford)
6. 08:00 AM - Re: Lithium batteries redux (Noel Loveys)
7. 08:41 AM - Re: transponder connections, grounding and RF interference (messydeer)
8. 08:43 AM - Careful on the Google link garmin 195 (Ed Anderson)
9. 08:45 AM - Re: garmin 195 (David Lloyd)
10. 09:04 AM - Fw: Careful on the Google link garmin 195 (Ed Anderson)
11. 09:47 AM - Re: garmin 195 (David Lloyd)
12. 10:03 AM - Re: garmin 195 (Ed Anderson)
13. 10:43 AM - Re: Lithium batteries redux (Robert L. Nuckolls, III)
14. 10:45 AM - Re: Extending capacitive fuel sensor lead? (Robert L. Nuckolls, III)
15. 11:00 AM - Re: Glasair contactors (Robert L. Nuckolls, III)
16. 11:05 AM - Re: Extending capacitive fuel sensor lead? (James Kilford)
17. 11:14 AM - Re: garmin 195 (David Lloyd)
18. 09:26 PM - Re: Lithium batteries redux (Stuart Hutchison)
Message 1
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a little off topics but.........i just acquired a garmin 195 to use for a
backup . works fine. i cant figure out if any updates for unit software or
database are available. anyone have recent experience with this unit? as it
is vfr backup not much of a deal if no updates are available.
bob noffs
Message 2
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I updated my Garmin 195 about 6 months ago, but haven't looked since.
Contact Garmin. I think all you need to do is register the unit with
them and then you can update it.
Steve Thomas
________________________________________________________________________
On May 13, 2011, at 4:02 AM, bob noffs wrote:
> a little off topics but.........i just acquired a garmin 195 to use
for a backup . works fine. i cant figure out if any updates for unit
software or database are available. anyone have recent experience with
this unit? as it is vfr backup not much of a deal if no updates are
available.
> bob noffs
>
>
>
Message 3
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Steve, I have had a Garmin 195 for over a decade. I got mine updated to
around 2008 date/time when I went to 2010 Sun & Fun by a Garmin Vendor
offer the update there at Sun & Fun for $60. They told me then that
Garmin had decided to stop supporting the 195 and that 2008 was the last
update there would be. I have not attempted to verify the accuracy of
this statement. But, the last update did include the changes the FAA
make to a lot of airport designators - since I had purchased my 195. So
I felt it was a worthwhile update.
I had purchased a more modern (non-Garmin) GPS which was more reasonably
priced and was almost as feature rich (Had everything I needed), it used
a Tablet Computer (a bit heavy) which eventually fell off my windshield
suction cup mount, hit its face on the co-pilot stick and damaged the
unit. When I reached over to pick it up the bottom was already almost
too hot to hold. Fearing a runway battery short, I was about to slow
down, open the canopy and jettison it over the side. But after whacking
the case a couple of times, I apparently removed the shorting condition.
Unfortunately, even though the tablet computer was the only part
damaged ( I mean the code was software not firmware) , I could not get
any sort of "deal" on replacing the HW and getting the code reloaded.
So I have since removed that vendor from my GPS list.
So now looking for an Garmin that I can afford as well as see {:>)
I still fly with my 195 and will continue to keep it as back up. Even
if not updated, its still a useful instrument, just naturally not to be
relied for accuracy of Nav, airport or obstruction data.
FWIW
Ed
From: Steve Thomas
Sent: Friday, May 13, 2011 8:30 AM
Subject: Re: AeroElectric-List: garmin 195
I updated my Garmin 195 about 6 months ago, but haven't looked since.
Contact Garmin. I think all you need to do is register the unit with
them and then you can update it.
Steve Thomas
________________________________________________________________________
On May 13, 2011, at 4:02 AM, bob noffs wrote:
a little off topics but.........i just acquired a garmin 195 to use
for a backup . works fine. i cant figure out if any updates for unit
software or database are available. anyone have recent experience with
this unit? as it is vfr backup not much of a deal if no updates are
available.
bob noffs
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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3D
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3D
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3D
Message 4
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Bob,
google is your best friend (update garmin 195)
http://www8.garmin.com/products/gpsmap195/download.html
On 13.05.2011 13:02, bob noffs wrote:
> a little off topics but.........i just acquired a garmin 195 to use for
> a backup . works fine. i cant figure out if any updates for unit
> software or database are available. anyone have recent experience with
> this unit? as it is vfr backup not much of a deal if no updates are
> available.
> bob noffs
>
> *
>
>
> *
Message 5
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Subject: | Extending capacitive fuel sensor lead? |
Gents,
I've bought three Kingston capacitive fuel sensors for my Jodel project.
They each provide a 0-5V calibrated output, which I'll be using to display
the three fuel levels on a home-made graphical 2-1/4" instrument (another
side project...)
The rear tank sensor has a combined probe and electronics, but the two wing
tank senders have a separate probe, linked to a little box of electronics
via a foot-or-so-long lead. The lead has a small connector, a "FAKRA" SMB
coax connector, Digikey part number ARF1250-ND. The lead is made of this
very thin wire, that looks as though it's spiral wrapped in paper. Sorry,
that's a bit of a sketchy description.
The wing tanks have recesses for the senders and a tube, from the recess,
for the lead to go along. The trouble is, the SMB connector is too big to
fit along this tube.
So, I'm wondering if I can cut the wire and, for example, put a couple of DB
pins in the conductors. Then I could feed them in, join the pins, and cover
with heatshrink. Or, perhaps I could just subtly extend the cables with
solder and heatshrink.
Any experiences on this sort of problem would be appreciated very much.
Many thanks in anticipation,
James
--
Jodel D150 in progress (90% done...)
Message 6
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Subject: | Lithium batteries redux |
Capacity to weight is fine but I think there are other considerations...
charging being one and cost the other.
My understanding is the lithium polymer batteries require special chargers
to prevent overheating the polymer core of the battery. (remember when
laptop computers and cell phones were reported to catch fire) I think but
an not entirely sure this has been overcome.
The cost is another factor. Planes work best when the weight is held at a
minimum. Each owner has to justify the cost of a high tech lithium battery
for himself.
Noel
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L.
Nuckolls, III
Sent: May 11, 2011 4:02 PM
Subject: AeroElectric-List: Lithium batteries redux
At 08:27 PM 5/10/2011, you wrote:
At 01:13 PM 5/10/2011, you wrote:
I would like to hear your Bob's or other folks comments about aviation use
of the lithium batteries supplied here:
http://www.lithiumaviationbattery.com/index.html
they seem to offer signficant weight reduction
I took the time to clean up my posting from earlier
this morning on the topic of lithium batteries
for OBAM aircraft.
I've converted it to an article which can be
accessed at:
http://aeroelectric.com/articles/Batteries/To_lithium_or_not_to_lithium.pdf
As usual, constructive critical review is
welcome.
Bob . . .
Message 7
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Subject: | Re: transponder connections, grounding and RF interference |
Below are some suggestions from other sources:
Pin #2 for 'ext suppr' is to be left open, since I'll have no DME.
Pin #3 for D4 could be connected to D4 or left open, since it would only be required
over 30,000 ft.
Pin #14 for 14V dimmer: the 'dim' with curved arrow next to the 'reply ident' knob
may be for the knob only, so an external dimmer might be needed. I hadn't
planned on installing one and don't plan on night flying, so I may just wire a
pigtail and leave it open.
Pin #15 for 'remote I/D' should be left open and not used as a ground connection.
The grounding schematic I posted earlier is correct, except that now that I will
not be using pin #15 as a ground, I'll jumper the grounds from the ground bus
and encoder to the single ground pin of the transponder, pin #1.
The 950 says it puts out 250W. I don't have the manual, but a current Becker model
that puts out this power uses a 3A slow blow fuse. I've seen other transponders
suggesting between 3 and 5A fuses. AC43 says a 5A fuse would protect a 20
or 22 awg wire, so unless someone has a better suggestion, I'll use these sizes.
MGL says they don't use any ferrite beads and have no RF interference problems.
Have I answered all my questions correctly?
--------
Dan
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=339761#339761
Message 8
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I would be careful about this garmin 195 update link on Google
(http://www8.garmin.com/products/gpsmap195/download.html).
The text indicates the last Garmin 195 SW update is listed as 2002, but more
importantly if you go to the download charts from that link, you will find
they have Updates but they are apparently not for the Garmin 195 as implied.
They appear to be for the marine GSPMAP 400 series if you check the
compatible units they list.
Ed
--------------------------------------------------
From: "Werner Schneider" <glastar@gmx.net>
Sent: Friday, May 13, 2011 10:44 AM
Subject: Re: AeroElectric-List: garmin 195
> <glastar@gmx.net>
>
> Bob,
>
> google is your best friend (update garmin 195)
>
> http://www8.garmin.com/products/gpsmap195/download.html
>
> On 13.05.2011 13:02, bob noffs wrote:
>> a little off topics but.........i just acquired a garmin 195 to use for
>> a backup . works fine. i cant figure out if any updates for unit
>> software or database are available. anyone have recent experience with
>> this unit? as it is vfr backup not much of a deal if no updates are
>> available.
>> bob noffs
>>
>> *
>>
>>
>> *
>
>
>
Message 9
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Bob,
The 195 was my first GPS to get me where I wanted to go. In fact, I
believe that it is still in my Garmin drawer..
I think the last 195 'system' OS update is still available from a Garmin
website. However, I don't think that Garmin has any Database updates
(not 100% sure of that...).
Years ago, there was an Air Force guy that was selling 195 database
updates on eBay. You might see if he still does that. This guy figured
out how Garmin 'pass worded the database.
Turned out it was a very simple key. Now, as we all know, of late
Garmin has a very elaborate method of protecting database updates from
being cloned.
Dave
-------------------------------------------------------------------------
-------
----- Original Message -----
From: bob noffs
To: aeroelectric list
Sent: Friday, May 13, 2011 4:02 AM
Subject: AeroElectric-List: garmin 195
a little off topics but.........i just acquired a garmin 195 to use
for a backup . works fine. i cant figure out if any updates for unit
software or database are available. anyone have recent experience with
this unit? as it is vfr backup not much of a deal if no updates are
available.
bob noffs
Message 10
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On this Garmin link they show the 195 as discountinued
https://buy.garmin.com/shop/shop.do?cID=169&pID=6412
GPSMAP 195
Part Number: 010-00083-00
Support
No software is currently available for this product. Please check back for
updates.
Ed
--------------------------------------------------
From: "Ed Anderson" <eanderson@carolina.rr.com>
Sent: Friday, May 13, 2011 11:40 AM
Subject: Careful on the Google link AeroElectric-List: garmin 195
> I would be careful about this garmin 195 update link on Google
>
> (http://www8.garmin.com/products/gpsmap195/download.html).
>
> The text indicates the last Garmin 195 SW update is listed as 2002, but
> more importantly if you go to the download charts from that link, you will
> find they have Updates but they are apparently not for the Garmin 195 as
> implied. They appear to be for the marine GSPMAP 400 series if you check
> the compatible units they list.
>
> Ed
>
> --------------------------------------------------
> From: "Werner Schneider" <glastar@gmx.net>
> Sent: Friday, May 13, 2011 10:44 AM
> To: <aeroelectric-list@matronics.com>
> Subject: Re: AeroElectric-List: garmin 195
>
>> <glastar@gmx.net>
>>
>> Bob,
>>
>> google is your best friend (update garmin 195)
>>
>> http://www8.garmin.com/products/gpsmap195/download.html
>>
>> On 13.05.2011 13:02, bob noffs wrote:
>>> a little off topics but.........i just acquired a garmin 195 to use for
>>> a backup . works fine. i cant figure out if any updates for unit
>>> software or database are available. anyone have recent experience with
>>> this unit? as it is vfr backup not much of a deal if no updates are
>>> available.
>>> bob noffs
>>>
>>> *
>>>
>>>
>>> *
>>
>>
>>
>>
>>
Message 11
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Ed,
The first of the Garmin X96 series, 196, is still a great GPS. It is
not color, but, great levels of grey scale. Because of it's newer color
cousins, the 196 is extremely cheap on the used market. For those that
can't pay much for a GPS, that unit gets my vote. Even though I use the
later models, when I travel with friends, I take my trusty 196 for the
ride.....
David
-------------------------------------------------------------------------
-------
----- Original Message -----
From: Ed Anderson
To: aeroelectric-list@matronics.com
Sent: Friday, May 13, 2011 6:57 AM
Subject: Re: AeroElectric-List: garmin 195
Steve, I have had a Garmin 195 for over a decade. I got mine updated
to around 2008 date/time when I went to 2010 Sun & Fun by a Garmin
Vendor offer the update there at Sun & Fun for $60. They told me then
that Garmin had decided to stop supporting the 195 and that 2008 was the
last update there would be. I have not attempted to verify the accuracy
of this statement. But, the last update did include the changes the
FAA make to a lot of airport designators - since I had purchased my 195.
So I felt it was a worthwhile update.
I had purchased a more modern (non-Garmin) GPS which was more
reasonably priced and was almost as feature rich (Had everything I
needed), it used a Tablet Computer (a bit heavy) which eventually fell
off my windshield suction cup mount, hit its face on the co-pilot stick
and damaged the unit. When I reached over to pick it up the bottom was
already almost too hot to hold. Fearing a runway battery short, I was
about to slow down, open the canopy and jettison it over the side. But
after whacking the case a couple of times, I apparently removed the
shorting condition. Unfortunately, even though the tablet computer was
the only part damaged ( I mean the code was software not firmware) , I
could not get any sort of "deal" on replacing the HW and getting the
code reloaded. So I have since removed that vendor from my GPS list.
So now looking for an Garmin that I can afford as well as see {:>)
I still fly with my 195 and will continue to keep it as back up. Even
if not updated, its still a useful instrument, just naturally not to be
relied for accuracy of Nav, airport or obstruction data.
FWIW
Ed
From: Steve Thomas
Sent: Friday, May 13, 2011 8:30 AM
To: aeroelectric-list@matronics.com
Subject: Re: AeroElectric-List: garmin 195
I updated my Garmin 195 about 6 months ago, but haven't looked since.
Contact Garmin. I think all you need to do is register the unit with
them and then you can update it.
Steve Thomas
________________________________________________________________________
On May 13, 2011, at 4:02 AM, bob noffs wrote:
a little off topics but.........i just acquired a garmin 195 to use
for a backup . works fine. i cant figure out if any updates for unit
software or database are available. anyone have recent experience with
this unit? as it is vfr backup not much of a deal if no updates are
available.
bob noffs
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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3D
href='3D"http://www.matronics.com/Navigator?AeroElectric-List"'>http://
www.matronics.com/Navigator?AeroElectric-List
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href='3D"http://forums.matronics.com"'>http://forums.matronics.com
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om/contribution
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3D
Message 12
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Good suggestion, David
However, due to the fact I only have one working eyeball and it's around
71 years of age, I am really looking for one (GPS) with a somewhat
larger screen and color would be nice as well. I sort of got hooked on
color with the one that fell off my windscreen and committed suicide.
But, the main reason is just to have one the can be updated - although I
think I'll look for one that uses the Government provided digital maps
just to keep my annual cost down at bit.
Thanks again for the suggestion
Ed
From: David Lloyd
Sent: Friday, May 13, 2011 12:44 PM
Subject: Re: AeroElectric-List: garmin 195
Ed,
The first of the Garmin X96 series, 196, is still a great GPS. It is
not color, but, great levels of grey scale. Because of it's newer color
cousins, the 196 is extremely cheap on the used market. For those that
can't pay much for a GPS, that unit gets my vote. Even though I use the
later models, when I travel with friends, I take my trusty 196 for the
ride.....
David
-------------------------------------------------------------------------
-------
----- Original Message -----
From: Ed Anderson
To: aeroelectric-list@matronics.com
Sent: Friday, May 13, 2011 6:57 AM
Subject: Re: AeroElectric-List: garmin 195
Steve, I have had a Garmin 195 for over a decade. I got mine updated
to around 2008 date/time when I went to 2010 Sun & Fun by a Garmin
Vendor offer the update there at Sun & Fun for $60. They told me then
that Garmin had decided to stop supporting the 195 and that 2008 was the
last update there would be. I have not attempted to verify the accuracy
of this statement. But, the last update did include the changes the
FAA make to a lot of airport designators - since I had purchased my 195.
So I felt it was a worthwhile update.
I had purchased a more modern (non-Garmin) GPS which was more
reasonably priced and was almost as feature rich (Had everything I
needed), it used a Tablet Computer (a bit heavy) which eventually fell
off my windshield suction cup mount, hit its face on the co-pilot stick
and damaged the unit. When I reached over to pick it up the bottom was
already almost too hot to hold. Fearing a runway battery short, I was
about to slow down, open the canopy and jettison it over the side. But
after whacking the case a couple of times, I apparently removed the
shorting condition. Unfortunately, even though the tablet computer was
the only part damaged ( I mean the code was software not firmware) , I
could not get any sort of "deal" on replacing the HW and getting the
code reloaded. So I have since removed that vendor from my GPS list.
So now looking for an Garmin that I can afford as well as see {:>)
I still fly with my 195 and will continue to keep it as back up. Even
if not updated, its still a useful instrument, just naturally not to be
relied for accuracy of Nav, airport or obstruction data.
FWIW
Ed
From: Steve Thomas
Sent: Friday, May 13, 2011 8:30 AM
To: aeroelectric-list@matronics.com
Subject: Re: AeroElectric-List: garmin 195
I updated my Garmin 195 about 6 months ago, but haven't looked since.
Contact Garmin. I think all you need to do is register the unit with
them and then you can update it.
Steve Thomas
________________________________________________________________________
On May 13, 2011, at 4:02 AM, bob noffs wrote:
a little off topics but.........i just acquired a garmin 195 to use
for a backup . works fine. i cant figure out if any updates for unit
software or database are available. anyone have recent experience with
this unit? as it is vfr backup not much of a deal if no updates are
available.
bob noffs
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
3D
href='3D"http://www.matronics.com/Navigator?AeroElectric-List"'>http://
www.matronics.com/Navigator?AeroElectric-List
3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
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3D
href='3D"http://forums.matronics.com"'>http://forums.matronics.com
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Message 13
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Subject: | Lithium batteries redux |
At 09:56 AM 5/13/2011, you wrote:
Capacity to weight is fine but I think there are other
considerations... charging being one and cost the other.
My understanding is the lithium polymer batteries require special
chargers to prevent overheating the polymer core of the battery.
(remember when laptop computers and cell phones were reported to
catch fire) I think but an not entirely sure this has been overcome.
There are several Li-ion technologies . . . each with its
own attendant weaknesses and strengths. And yes, keeping
an array of series-parallel cells equally serviced in large
capacity batteries is a technology challenge. The cells
are very energetic and the demands for integrating them into
long lived, low maintenance, low risk arrays are challenges
to be met.
There ARE several lithium technologies flying in air transport
category aircraft and military aircraft. ALL of these aircraft
enjoy a great deal more attention from trained, professional
ground crews on budgets that would discourage the OBAM aircraft
owner/pilot.
The cost is another factor. Planes work best when the weight is held
at a minimum.
But "best" is non quantified. And weight is a moving
target. One might suggest that the airplane will perform
"better" if you never fly with more than 1/4 tanks. Obviously,
this cripples the overall mission performance in trade
for "better" performance en route.
Each owner has to justify the cost of a high tech lithium battery
for himself.
Absolutely. Further, it goes beyond acquisition costs
to include cost of ownership over an extended period of
time equal to the battery's expected service life.
This was emphasized in the short essay I published. These
are an emerging technology . . . with the historically
predictable acquisition costs. My first 4-function calculator
cost me $75 used in 1980, Needed 9v batteries it ate like
popcorn. The same functionality today costs $1 at big lots and
runs for years on a button cell.
We're in the "1980's emerging technology" mode with lithium
ion batteries as main batteries for aircraft. The high
volume usage by automotive markets will have the same effect
on aircraft lithium cranking batteries as consumer grade
GPS products had on aviation specific GPS navigation. If
our fellow citizens have it bolted to THEIR cars and RV's,
then it's going to get better for OUR airplanes in the
future.
But you're right. There are dragons to slay, new dogs to
train, old dogs to retire, and market confidences to be
gained. We are presently witnessing the opening minutes
of the first quarter.
Putting the numbers to a complete set of design goals
is what the guys in the heavy-iron bird business do
to justify their salaries and test budgets. That's why
it cost $30 million to bring the Star Ship to market . . .
If we'd spent another $10 million in doing the numbers
and testing, we might have saved a boatload of money
by discovering that the product was doomed before we
put it into production.
Bob . . .
---------------------------------------
( . . . a long habit of not thinking )
( a thing wrong, gives it a superficial )
( appearance of being right . . . )
( )
( -Thomas Paine 1776- )
---------------------------------------
Message 14
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Subject: | Re: Extending capacitive fuel sensor lead? |
At 09:48 AM 5/13/2011, you wrote:
>Gents,
>
>I've bought three Kingston capacitive fuel
>sensors for my Jodel project. They each
>provide a 0-5V calibrated output, which I'll be
>using to display the three fuel levels on a
>home-made graphical 2-1/4" instrument (another side project...)
>
>The rear tank sensor has a combined probe and
>electronics, but the two wing tank senders have
>a separate probe, linked to a little box of
>electronics via a foot-or-so-long lead. The
>lead has a small connector, a "FAKRA" SMB coax
>connector, Digikey part number ARF1250-ND. The
>lead is made of this very thin wire, that looks
>as though it's spiral wrapped in paper. Sorry,
>that's a bit of a sketchy description.
>
>The wing tanks have recesses for the senders and
>a tube, from the recess, for the lead to go
>along. The trouble is, the SMB connector is
>too big to fit along this tube.
>
>So, I'm wondering if I can cut the wire and, for
>example, put a couple of DB pins in the
>conductors. Then I could feed them in, join
>the pins, and cover with heatshrink. Or, perhaps
>I could just subtly extend the cables with solder and heatshrink.
>
>Any experiences on this sort of problem would be appreciated very much.
>
>Many thanks in anticipation,
Talk to the folks who made the product. There's a dozen
ways to configure capacitive fuel sensor/gage systems
each with it's own system integration limits.
As a GENERAL rule, don't mess with coax lengths unless
the installation instructions specifically offer techniques
for doing it. Ordinary wire, including shielded wires, can
generally be extended to any necessary length. But call the
folks that built the thing. They know more about it than
anybody else.
Bob . . .
Message 15
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Subject: | Re: Glasair contactors |
>Bob,
>
>The contactors that Glasair sent in my 24V option package are
>Cole-Hersee 24063 85A continuous 24V units. The 12V guys received
>similar 85A units.
Okay. C-H builds some robust stuff.
Let's keep in mind that relays and contactors are
rated in the tens of thousands of operations. Using
a C-duty contactor as a starter control may set
up a situation where design goals are not going
to be realized in the field . . . but a contactor
failing after 5 years of service is no big deal
to the owner.
I would judge that the vast majority of OBAM aircraft
flying have never had to replace a starter contactor . . .
whether "rated" for that service . . . or not.
We recommend the intermittent-duty, starter-rated
devices because they're no more expensive than their
C-duty cousins and are DESIGNED for that task. In
no way does that suggest that using a C-duty contactor
will produce unsatisfactory service life as perceived
by the owner/operator. However if that same owner/operator
were using the contactor in a crop duster than was
expected to produce a dozen starts every working day . . .
Bob . . .
Message 16
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Subject: | Re: Extending capacitive fuel sensor lead? |
Yes, I guess so...
By the way, I've just realised that I wrote Kingston... but meant Princeton
!
James
On 13 May 2011 18:43, Robert L. Nuckolls, III <nuckolls.bob@aeroelectric.co
m
> wrote:
> nuckolls.bob@aeroelectric.com>
>
> At 09:48 AM 5/13/2011, you wrote:
>
>> Gents,=C3=82
>>
>> I've bought three Kingston capacitive fuel sensors for my Jodel project.
=C3=82
>> They each provide a 0-5V calibrated output, which I'll be using to displ
ay
>> the three fuel levels on a home-made graphical 2-1/4" instrument (anothe
r
>> side project...)
>>
>> The rear tank sensor has a combined probe and electronics, but the two
>> wing tank senders have a separate probe, linked to a little box of
>> electronics via a foot-or-so-long=C3=82 lead. =C3=82 The lead has a smal
l connector, a
>> "FAKRA" SMB coax connector, Digikey part number ARF1250-ND. =C3=82 The l
ead is
>> made of this very thin wire, that looks as though it's spiral wrapped in
>> paper. =C3=82 Sorry, that's a bit of a sketchy description.
>>
>> The wing tanks have recesses for the senders and a tube, from the recess
,
>> for the lead to go along. =C3=82 The trouble is, the SMB connector is to
o big to
>> fit along this tube. =C3=82
>>
>> So, I'm wondering if I can cut the wire and, for example, put a couple o
f
>> DB pins in the conductors. =C3=82 Then I could feed them in, join the pi
ns, and
>> cover with heatshrink. Or, perhaps I could just subtly extend the cables
>> with solder and heatshrink.
>>
>> Any experiences on this sort of problem would be appreciated very much.
=C3=82
>>
>> Many thanks in anticipation,
>>
>
> Talk to the folks who made the product. There's a dozen
> ways to configure capacitive fuel sensor/gage systems
> each with it's own system integration limits.
>
> As a GENERAL rule, don't mess with coax lengths unless
> the installation instructions specifically offer techniques
> for doing it. Ordinary wire, including shielded wires, can
> generally be extended to any necessary length. But call the
> folks that built the thing. They know more about it than
> anybody else.
>
> Bob . . .
>
>
===========
===========
===========
===========
>
>
Message 17
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Ed,
...Ahhh, you do have some unique viewing differences.
About suction cup mounts. I use one on my left window corner for my
backup Garmin. What I do is have a "lanyard" affixed to the mount and
to my upper air vent. When the mount suction fails it only falls an
inch or so when the lanyard catches it. I have learned the hard way
too.
dave
-------------------------------------------------------------------------
-------
----- Original Message -----
From: Ed Anderson
To: aeroelectric-list@matronics.com
Sent: Friday, May 13, 2011 9:59 AM
Subject: Re: AeroElectric-List: garmin 195
Good suggestion, David
However, due to the fact I only have one working eyeball and it's
around 71 years of age, I am really looking for one (GPS) with a
somewhat larger screen and color would be nice as well. I sort of got
hooked on color with the one that fell off my windscreen and committed
suicide. But, the main reason is just to have one the can be updated -
although I think I'll look for one that uses the Government provided
digital maps just to keep my annual cost down at bit.
Thanks again for the suggestion
Ed
From: David Lloyd
Sent: Friday, May 13, 2011 12:44 PM
To: aeroelectric-list@matronics.com
Subject: Re: AeroElectric-List: garmin 195
Ed,
The first of the Garmin X96 series, 196, is still a great GPS. It is
not color, but, great levels of grey scale. Because of it's newer color
cousins, the 196 is extremely cheap on the used market. For those that
can't pay much for a GPS, that unit gets my vote. Even though I use the
later models, when I travel with friends, I take my trusty 196 for the
ride.....
David
-------------------------------------------------------------------------
-----
----- Original Message -----
From: Ed Anderson
To: aeroelectric-list@matronics.com
Sent: Friday, May 13, 2011 6:57 AM
Subject: Re: AeroElectric-List: garmin 195
Steve, I have had a Garmin 195 for over a decade. I got mine
updated to around 2008 date/time when I went to 2010 Sun & Fun by a
Garmin Vendor offer the update there at Sun & Fun for $60. They told me
then that Garmin had decided to stop supporting the 195 and that 2008
was the last update there would be. I have not attempted to verify the
accuracy of this statement. But, the last update did include the
changes the FAA make to a lot of airport designators - since I had
purchased my 195. So I felt it was a worthwhile update.
I had purchased a more modern (non-Garmin) GPS which was more
reasonably priced and was almost as feature rich (Had everything I
needed), it used a Tablet Computer (a bit heavy) which eventually fell
off my windshield suction cup mount, hit its face on the co-pilot stick
and damaged the unit. When I reached over to pick it up the bottom was
already almost too hot to hold. Fearing a runway battery short, I was
about to slow down, open the canopy and jettison it over the side. But
after whacking the case a couple of times, I apparently removed the
shorting condition. Unfortunately, even though the tablet computer was
the only part damaged ( I mean the code was software not firmware) , I
could not get any sort of "deal" on replacing the HW and getting the
code reloaded. So I have since removed that vendor from my GPS list.
So now looking for an Garmin that I can afford as well as see {:>)
I still fly with my 195 and will continue to keep it as back up.
Even if not updated, its still a useful instrument, just naturally not
to be relied for accuracy of Nav, airport or obstruction data.
FWIW
Ed
From: Steve Thomas
Sent: Friday, May 13, 2011 8:30 AM
To: aeroelectric-list@matronics.com
Subject: Re: AeroElectric-List: garmin 195
I updated my Garmin 195 about 6 months ago, but haven't looked
since. Contact Garmin. I think all you need to do is register the unit
with them and then you can update it.
Steve Thomas
________________________________________________________________________
On May 13, 2011, at 4:02 AM, bob noffs wrote:
a little off topics but.........i just acquired a garmin 195 to
use for a backup . works fine. i cant figure out if any updates for unit
software or database are available. anyone have recent experience with
this unit? as it is vfr backup not much of a deal if no updates are
available.
bob noffs
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Subject: | Lithium batteries redux |
G'day,
www.batteryuniversity.com is a useful resource. Isidor Buchmann is very
well regarded as an expert in these technologies.
Li-ion or Li-Po secondary cells (rechargeables) do not behave the same way
as older technologies like NiCd or NiMH or Lead Acid. Lithium technologies
have upper and lower voltage limits, otherwise the battery is ruined. In
other words, if you load a Lithium battery and let it run down below the
minimum voltage limit (about 3V per cell), the battery will be ruined the
first time you use it. Therefore, these batteries must be connected to
electronic devices to control voltage. The correct chargers must also be
used. When used correctly, this also means that there is a LOT of energy
left in the battery even after the 'power meter' says the battery is flat
(such as on your computer) - enough to start a fire if short circuited.
Stu
_____
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Noel
Loveys
Sent: Saturday, May 14, 2011 12:57 AM
Subject: RE: AeroElectric-List: Lithium batteries redux
Capacity to weight is fine but I think there are other considerations...
charging being one and cost the other.
My understanding is the lithium polymer batteries require special chargers
to prevent overheating the polymer core of the battery. (remember when
laptop computers and cell phones were reported to catch fire) I think but
an not entirely sure this has been overcome.
The cost is another factor. Planes work best when the weight is held at a
minimum. Each owner has to justify the cost of a high tech lithium battery
for himself.
Noel
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L.
Nuckolls, III
Sent: May 11, 2011 4:02 PM
Subject: AeroElectric-List: Lithium batteries redux
At 08:27 PM 5/10/2011, you wrote:
At 01:13 PM 5/10/2011, you wrote:
I would like to hear your Bob's or other folks comments about aviation use
of the lithium batteries supplied here:
http://www.lithiumaviationbattery.com/index.html
they seem to offer signficant weight reduction
I took the time to clean up my posting from earlier
this morning on the topic of lithium batteries
for OBAM aircraft.
I've converted it to an article which can be
accessed at:
http://aeroelectric.com/articles/Batteries/To_lithium_or_not_to_lithium.pdf
As usual, constructive critical review is
welcome.
Bob . . .
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