Today's Message Index:
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1. 06:16 AM - Re: Re: lithum-ion batteries (Robert Reed)
2. 12:44 PM - Fw: [Norton AntiSpam]Re: [rvsqn] Charge indicator light (JOHN TIPTON)
3. 01:08 PM - [Norton AntiSpam]Re: [rvsqn] Charge indicator light (nuckollsr)
4. 01:26 PM - Re: Fw: [Norton AntiSpam]Re: [rvsqn] Charge indicator light (Henry Hallam)
5. 01:26 PM - Re: [Norton AntiSpam]Re: [rvsqn] Charge indicator light (JOHN TIPTON)
Message 1
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| Subject: | Re: lithum-ion batteries |
Best advice I have seen in a long time! Thanks!
Bob Reed
Sent from my iPhone
On Mar 3, 2013, at 12:06 AM, Jan <jan@CLAVER.DEMON.CO.UK> wrote:
> For what it is worth I work with Li-ion batteries for a living. No questi
on they are lighter and will hold more energy and are able to deliver it fas
ter than other battery technologies.
>
> Problem is that you need to control them very well both in charge and disc
harge. Failure can be rather interesting .... Easy in a car .. You just pull
over and deal with the "issue". Not so easy when you at 5000ft. :-)
>
> For the weight saving in question. Go to the gym an loose a few pounds... Y
ou live longer and do not have to worry about your battery pack. I will not b
e fitting them in my RV ... And I can get them for free ...
>
> All the best
>
> Jan
>
> On Mar 3, 2013, at 3:28, rayj <raymondj@frontiernet.net> wrote:
>
>> James,
>>
>> I attached a report that was posted to the list a while ago. My personal
opinion is that Li battery technology is not ready for use in aircraft. Ch
eck the archives for more info and opinions.
>>
>> Hope this is useful.
>> Raymond Julian
>> Kettle River, MN.
>>
>> "And you know that I could have me a million more friends,
>> and all I'd have to lose is my point of view." - John Prine
>> On 03/01/2013 07:17 PM, James Robinson wrote:
>>> What is the concensus opinion on lithium-ion batteries? I can get a Lit
hiun-ion battery with greater Amp/hr rating, cranking power, and save more t
han 1/2 the weight. Any comments?
>>>
>>> James Robinson
>>> Glasair lll N79R
>>> Spanish Fork UT U77
>>>
>>> From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
>>> To: aeroelectric-list@matronics.com
>>> Sent: Thursday, February 28, 2013 11:30 AM
>>> Subject: Re: AeroElectric-List: Ground plane diameter
>>>
olls.bob@aeroelectric.com>
>>>
>>> At 11:48 AM 2/28/2013, you wrote:
>>> > Then would be the recommendation for a more modern design that is all c
arbon fiber? The carbon is conductive, but absorbs radiation instead of ref
lecting it from what I understand. Go with a foil circle or strips of the a
ppropriate diameter on the outside of the carbon, but under the paint?
>>>
>>> That's a whole other can of worms. The carbon fiber
>>> is, as you've described, pretty lossy stuff. Yeah, it
>>> is conductive but much of electrical energy flowing
>>> through a carbon matrix is converted to heat.
>>>
>>> Trying to create idealized ground planes over the
>>> carbon and under the paint is exceedingly expensive
>>> and problematic for affecting structural integrity
>>> of the shell.
>>>
>>> At HBC, non-resonant ground planes were bonded to the
>>> inside surface of the fuselage shell. Relatively
>>> inexpensive and the flight test results deemed them
>>> adequate to the task.
>>>
>>>
>>>
>>> Bent also available via the Web nbsp; -Matt Dralle,=
>>
>> <RFLithiumIonBatteriesHazard.pdf>
>
>
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| Subject: | Re: Fw: [Norton AntiSpam]Re: [rvsqn] Charge indicator light |
Hi Guys
This is an interesting little device at a very low price:
http://www.ebay.co.uk/itm/12v-Battery-Charge-Warning-Light-voltage-indica
tor-/150481634975?pt=UK_Sound_Vision_Other&hash=item230967869f
Details here
http://www.sparkbright.co.uk/
As the device can be programmed by the supplier for the buyers
application, what would the values be - ie: over charging voltage -
normal voltage - low voltage etc for an RV
John
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| Subject: | Re: [Norton AntiSpam]Re: [rvsqn] Charge indicator light |
Interesting product. If it's well calibrated and stable, the voltages cited are
typical and appropriate for a 14v system Here's a 'cleaner' link to the offering
on ebay.
http://tinyurl.com/bt8rz55
I'll order one and see how well it delivers on its claims.
Bob . . .
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=395539#395539
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| Subject: | Re: Fw: [Norton AntiSpam]Re: [rvsqn] Charge indicator |
light
That looks great especially for cramped panels.
On Sun, Mar 3, 2013 at 12:31 PM, JOHN TIPTON <jmtipton@btopenworld.com>wrot
e:
> **
> Hi Guys
>
> This is an interesting little device at a very low price:
>
> ** <http://www.ebay.co.uk/itm/12v-Battery-C>*
> http://www.ebay.co.uk/itm/12v-Battery-C**
> harge-Warning-Light-voltage-indicator-/150481634975?pt=UK_Sound_Vision_
Other&hash=item230967869f
> *
>
>
> Details here
>
> http://www.sparkbright.co.uk/
>
> As the device can be programmed by the supplier for the buyers
> application, what would the values be - ie: over charging voltage - norma
l
> voltage - low voltage etc for an RV
>
> John
>
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Message 5
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| Subject: | Re: [Norton AntiSpam]Re: [rvsqn] Charge indicator light |
Nice one Bob: I look forward to seeing the results
John (RV-9a - England)
----- Original Message -----
From: "nuckollsr" <bob.nuckolls@aeroelectric.com>
Sent: Sunday, March 03, 2013 9:07 PM
Subject: AeroElectric-List: [Norton AntiSpam]Re: [rvsqn] Charge indicator
light
> <bob.nuckolls@aeroelectric.com>
>
> Interesting product. If it's well calibrated and stable, the voltages
> cited are typical and appropriate for a 14v system Here's a 'cleaner' link
> to the offering on ebay.
>
> http://tinyurl.com/bt8rz55
>
> I'll order one and see how well it delivers on its claims.
>
> Bob . . .
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=395539#395539
>
>
>
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