Today's Message Index:
----------------------
1. 09:31 AM - Re: Heat Sink necessary? (jonlaury)
2. 09:46 AM - Re: Z-31B Ground Power Contactor Diode (jonlaury)
3. 09:49 AM - Re: Re: Heat Sink necessary? (Robert L. Nuckolls, III)
4. 10:19 AM - Lithium Battery Option ()
5. 11:16 AM - Re: Lithium Battery Option (Doug Ilg)
6. 12:09 PM - Re: Lithium Battery Option ()
7. 01:18 PM - Re: Lithium Battery Option (rparigoris)
8. 01:19 PM - Dynon D10A sound (rparigoris)
9. 01:37 PM - Re: Dynon D10A sound (Werner Schneider)
10. 02:49 PM - Re: Lithium Battery Option (N38CW)
11. 02:56 PM - Re: Panel punch (Roger)
12. 03:29 PM - Re: Re: Lithium Battery Option (Jon Finley)
13. 03:35 PM - Re: Dynon D10A sound (rparigor@suffolk.lib.ny.us)
14. 03:48 PM - Re: Re: Heat Sink necessary? (Ken)
15. 07:29 PM - Re: Re: Heat Sink necessary? (Robert L. Nuckolls, III)
Message 1
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Subject: | Re: Heat Sink necessary? |
Glen and Bob, Thanks.
I used a .063 alum washer for a stand-off from my composite structure which allows
air to the metal backside of the rectifier. I will add a larger surface area
piece of alum w/recommended grease.
The injectors are 55#/hr and my 6 cyl engine, with a bsfc of .55 lbs./hr/hp, will
have a max fuel consumption of 132 lbs/hr so these injectors will only see
a 40% duty cycle. At 75% they draw 9W each or 54 W, so my normal ops should draw
about 2.5 amps. So my initial guess of 6a is too high. The 10 amp circuit
recommended by the EFI mfgr is to cover all the bases including low voltage and
higher power than my engine makes.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=304047#304047
Message 2
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Subject: | Re: Z-31B Ground Power Contactor Diode |
Thank you, sir.
J
Do Not Archive
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=304052#304052
Message 3
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Subject: | Re: Heat Sink necessary? |
At 11:29 AM 7/7/2010, you wrote:
>
>Glen and Bob, Thanks.
>
>I used a .063 alum washer for a stand-off from my composite
>structure which allows air to the metal backside of the rectifier. I
>will add a larger surface area piece of alum w/recommended grease.
Okay, recommend something on the order of 10 square inches
of .062 aluminum. If you wanted to make it "tighter" on
real-estate, you could bend the edges up so that the
diode still sits on a flat spot, but the overall width
is reduced.
>The injectors are 55#/hr and my 6 cyl engine, with a bsfc of .55
>lbs./hr/hp, will have a max fuel consumption of 132 lbs/hr so these
>injectors will only see a 40% duty cycle. At 75% they draw 9W each
>or 54 W, so my normal ops should draw about 2.5 amps. So my initial
>guess of 6a is too high. The 10 amp circuit recommended by the EFI
>mfgr is to cover all the bases including low voltage and higher
>power than my engine makes.
Hmmmm . . . maybe you don't need to do anything with
the diode. Wait until you're able to run the engine
and take some measurements of your own. It sounds
like it might be just fine with zero-heat sink.
Bob . . .
Message 4
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Subject: | Lithium Battery Option |
Do Not Archive
I just read Porsche now has a lightweight Lithium battery option for the
new Boxster Spyder. They claim it's 22 pounds lighter than the standard
job. I'd like to get a profile on the product. Over the counter I'd
expect to pay big bucks just for the name. If anyone hears more about
this, let us know. If I get a chance, I'll stop by the dealer for more
info.
http://editorial.autos.msn.com/article.aspx?cp-documentid=1118846
Glenn
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Subject: | Re: Lithium Battery Option |
As far as I know, the granddaddy of all-lithium battery uses is the Tesla
=0ARoadster.- Of course, they run the entire car on the battery, so it's
a very =0Adifferent beast.- I do know, though, that they get their batte
ries made by =0APanasonic.- Given that, I'd say it's a very good bet that
Panasonic makes the =0Abest lithium batteries available.- Cost is not a
huge issue for a $110K car, so =0Athey weren't scrimping.=0A=0AMay be worth
looking into.- You might be able to assemble your own from =0APanasonic
parts.- Hey, we're experimentals, right?=0A-=0ADoug Ilg=0AGrumman Tiger
N74818, College Park-Airport (KCGS), Maryland=0AChallenger II LSS LW (N6
41LG-reserved)-- kit underway at Laurel Suburban (W18)=0A
Message 6
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Subject: | Lithium Battery Option |
Absolutely,
If I could shave even 10 pounds off what my Odyssey battery weighs, that will make
a difference. When you get down to it, this game is all about weight - keeping
it off that is. I will find out what Porsche has done. Since they only use
one battery, it will be interesting to learn about the expected capacity.
Glenn E. Long
Do Not Archive
-----Original Message-----
From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Doug Ilg
Sent: Wednesday, July 07, 2010 2:11 PM
Subject: Re: AeroElectric-List: Lithium Battery Option
As far as I know, the granddaddy of alllithium battery uses is the Tesla Roadster.
Of course, they run the entire car on the battery, so it's a very different
beast. I do know, though, that they get their batteries made by Panasonic. Given
that, I'd say it's a very good bet that Panasonic makes the best lithium
batteries available. Cost is not a huge issue for a $110K car, so they weren't
scrimping.
May be worth looking into. You might be able to assemble your own from Panasonic
parts. Hey, we're experimentals, right?
Doug Ilg
Grumman Tiger N74818, College ParkAirport (KCGS), Maryland Challenger II LSS LW
(N641LGreserved)- kit underway at Laurel Suburban (W18)
Message 7
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Subject: | Re: Lithium Battery Option |
A while back Bill Dube mentioned he was offering a A-123 cell battery for aircraft
use.
Ron P.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=304079#304079
Message 8
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Subject: | Dynon D10A sound |
I have a Dynon D10A with a homemade AOA and PS PMA4000 audio panel with unswitched
audio inputs.
For those who have tried, is it worth it hooking up D10A audio to audio panel?
Thx.
Ron Parigoris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=304080#304080
Message 9
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Subject: | Re: Dynon D10A sound |
If you have an AoA which works yes, it gives you a nice alert!
br Wrener
On 07.07.2010 22:16, rparigoris wrote:
> --> AeroElectric-List message posted by: "rparigoris"<rparigor@suffolk.lib.ny.us>
>
> I have a Dynon D10A with a homemade AOA and PS PMA4000 audio panel with unswitched
audio inputs.
>
> For those who have tried, is it worth it hooking up D10A audio to audio panel?
>
> Thx.
> Ron Parigoris
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=304080#304080
>
>
Message 10
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Subject: | Re: Lithium Battery Option |
Yep, it's a bit pricey...
http://www.motorauthority.com/blog/1039902_porsches-1700-starter-battery-option-for-boxster-spyder-911-gt3
--------
Bill Settle
RV-8 Fuselage
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=304092#304092
Message 11
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> Does anyone on the list have a 3 1/8" panel punch that you might be
> willing
> to loan out? I have a set of Greenly Punches but do not have one this
> large. I need to punch about 3 instrument holes in my panel and I feel
> the
> punch is the best way to go. The panel is light gauge aluminum, so will
> be
> very easy to punch. I have considered using a hole saw, but I have never
> been able to make a nice clean hole with this method.
>
> Any help would be appreciated.
>
> Roger Curtis
> Upton, MA
> I have one you would be welcome to borrow. 3-1/8 on one side, 2-1/4 on
> the
> other. Kind of heavy but maybe one of those "if it fits it ships" USPS
> boxes wouldn't be too much.
>
> Allen Fulmer
> Alexander City, AL 35010
Allen,
Thank you for the loan of your punch. I can't immagine, short of
setting the panel up on a milling machine, making instrument holes
as nice, smooth, round, easy, and precisely placed, as can be
accomplished with the simple punch.
This is what it is all about, "Builders helping Builders"
Great forum!
Roger
Message 12
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Subject: | Re: Lithium Battery Option |
=0AIf my math is right, that works out to $77.00/pound. Not quite up to th
e rumored $100,000/pound that Formula 1 is willing to pay but still out of
my budget.... :-(=0A =0AJon=0A=0A-----Original Message-----=0AFrom: "N38CW
" <billsettle@bellsouth.net>=0ASent: Wednesday, July 7, 2010 3:47pm=0ATo: a
eroelectric-list@matronics.com=0ASubject: AeroElectric-List: Re: Lithium Ba
tle@bellsouth.net>=0A=0AYep, it's a bit pricey...=0A=0Ahttp://www.motorauth
ority.com/blog/1039902_porsches-1700-starter-battery-option-for-boxster-spy
der-911-gt3=0A=0A--------=0ABill Settle=0ARV-8 Fuselage=0A=0A=0A=0A=0ARead
this topic online here:=0A=0Ahttp://forums.matronics.com/viewtopic.php?p=
=========0A=0A=0A=0A
Message 13
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Subject: | Re: Dynon D10A sound |
"If you have an AoA which works yes, it gives you a nice
alert!"
Thx. Werner
Ron Parigoris
Message 14
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Subject: | Re: Heat Sink necessary? |
It is sometimes good to imagine what can go wrong. Generally high
impedance injectors run around 12 ohms resistance. If one or more
injector driver fails on, the engine will likely keep running unless
subsequently a fuse pops or a diode fails due to the extra current. I'd
consider making sure the diode had some heat sinking and was capable of
feeding all six injectors at 100% duty cycle which is likely 7+ amps at
14+ volts.
Ken
Robert L. Nuckolls, III wrote:
> <nuckolls.bob@aeroelectric.com>
>
> At 11:29 AM 7/7/2010, you wrote:
>> <jonlaury@impulse.net>
>>
>> Glen and Bob, Thanks.
>>
>> I used a .063 alum washer for a stand-off from my composite structure
>> which allows air to the metal backside of the rectifier. I will add a
>> larger surface area piece of alum w/recommended grease.
>
> Okay, recommend something on the order of 10 square inches
> of .062 aluminum. If you wanted to make it "tighter" on
> real-estate, you could bend the edges up so that the
> diode still sits on a flat spot, but the overall width
> is reduced.
>
>> The injectors are 55#/hr and my 6 cyl engine, with a bsfc of .55
>> lbs./hr/hp, will have a max fuel consumption of 132 lbs/hr so these
>> injectors will only see a 40% duty cycle. At 75% they draw 9W each or
>> 54 W, so my normal ops should draw about 2.5 amps. So my initial
>> guess of 6a is too high. The 10 amp circuit recommended by the EFI
>> mfgr is to cover all the bases including low voltage and higher power
>> than my engine makes.
>
> Hmmmm . . . maybe you don't need to do anything with
> the diode. Wait until you're able to run the engine
> and take some measurements of your own. It sounds
> like it might be just fine with zero-heat sink.
>
>
> Bob . . .
>
Message 15
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Subject: | Re: Heat Sink necessary? |
At 05:47 PM 7/7/2010, you wrote:
>
>It is sometimes good to imagine what can go wrong. Generally high
>impedance injectors run around 12 ohms resistance. If one or more
>injector driver fails on, the engine will likely keep running unless
>subsequently a fuse pops or a diode fails due to the extra current.
>I'd consider making sure the diode had some heat sinking and was
>capable of feeding all six injectors at 100% duty cycle which is
>likely 7+ amps at 14+ volts.
Would that not be a multiple failure scenario? . . .
and would the engine run with 5 of the 6 injectors
turned on hard?
Bob . . .
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