Today's Message Index:
----------------------
1. 05:54 AM - Re: EarthX fire (Linn Walters)
2. 07:19 AM - Re: EarthX fire (Dan Bergeron)
3. 09:33 AM - Re: EarthX fire (Jeff Luckey)
4. 09:46 AM - Alternative engine gathering at Slobovia Outernational (MS71) (Charlie England)
5. 10:45 AM - Re: EarthX fire (John Morgensen)
Message 1
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Lithium Ion and Lithium Polymer batteries are sensitive to thermal
runaway ...... and once started are near impossible to stop. Their
charge profiles are also different from flooded/gel batteries. Even the
'experts' get it wrong .... Use Bing to find 'dreamliner battery' to see
the carnage. I'd wait a while before switching.
Linn
On 5/11/2014 2:27 AM, Bill Judge wrote:
> I've been kicking around the idea of getting rid of the 2 PC625s that
> I lug around and getting lithium batteries, I could probably save 20
> lbs, but every time I get close I read about this sort of thing:
> http://advrider.com/forums/showpost.php?p=24135454&postcount=9894
>
> So I'll probably wait a few more years...
>
> Bill Judge
> N84WJ, RV-8, 1012 hrs
> RV-8.blogspot.com <http://RV-8.blogspot.com>
>
> *
>
>
> *
>
> No virus found in this message.
> Checked by AVG - www.avg.com <http://www.avg.com>
>
Message 2
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Good Morning
The only lithium ion battery in my airplane is in my cell phone - no way I
would go beyond that - the risk of thermal runaway too high and the
potential consequences catastrophic - no thanks - fly safe
Dan Bergeron
RV-7A - N307TB
500+ hours since first
flight Aug 6, 2009
On Sun, May 11, 2014 at 8:53 AM, Linn Walters <flying-nut@cfl.rr.com> wrote:
> Lithium Ion and Lithium Polymer batteries are sensitive to thermal
> runaway ...... and once started are near impossible to stop. Their charge
> profiles are also different from flooded/gel batteries. Even the 'experts'
> get it wrong .... Use Bing to find 'dreamliner battery' to see the
> carnage. I'd wait a while before switching.
> Linn
>
>
> On 5/11/2014 2:27 AM, Bill Judge wrote:
>
> I've been kicking around the idea of getting rid of the 2 PC625s that I
> lug around and getting lithium batteries, I could probably save 20 lbs, but
> every time I get close I read about this sort of thing:
> http://advrider.com/forums/showpost.php?p=24135454&postcount=9894
>
> So I'll probably wait a few more years...
>
> Bill Judge
> N84WJ, RV-8, 1012 hrs
> RV-8.blogspot.com
>
>
> No virus found in this message.
> Checked by AVG - www.avg.com
> 05/10/14
>
>
> *
>
>
> *
>
>
Message 3
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Bill,=0A=0AI use Li-po batts in my R/C model airplanes and they are great f
or that application, HOWEVER, they require a fair amount of care.- They n
eed a special charger; they are extremely sensitive to over-charging & bein
g drained below a certain voltage.- Generally they are very temperamental
and need lot of baby-sitting.- They are great for R/Cs because they are
half the weight of alternatives but I track each charge, the number of cycl
es, etc for each pack that I own and generally treat them w/ a lot of respe
ct.=0A=0AAs other posters have mentioned, when they fail, it can be spectac
ular.- I once watched a Nissan hatchback burn to the tires at my local mo
del flying field because the owner was charging a lipo pack in the back sea
t. =0A=0AI don't think they are ready for prime time in Experimental aircra
ft.- I think that there have been some articles in Kit Planes recently ab
out this subject and I believe the author reaches the same conclusion. =0A
=0A=0A-Jeff=0A=0A=0A________________________________=0A From: Dan Bergeron
<dan.pat.b@gmail.com>=0ATo: rv-list@matronics.com =0ASent: Sunday, May 11,
2014 7:18 AM=0ASubject: Re: RV-List: EarthX fire=0A =0A=0A=0AGood Morning
=0AThe only lithium ion battery in my airplane is in my cell phone - no way
I would go beyond that - the risk of thermal runaway too high and the pote
ntial consequences catastrophic - no thanks - fly safe=0ADan Bergeron=0ARV-
7A -- N307TB=0A500+ hours since first-=0A- - -flight Aug 6, 2009
-=0A=0A=0A=0AOn Sun, May 11, 2014 at 8:53 AM, Linn Walters <flying-nut@cf
l.rr.com> wrote:=0A=0ALithium Ion and Lithium Polymer batteries are sensiti
ve to thermal runaway ...... and once started are near impossible to stop.
- Their charge profiles are also different from flooded/gel batteries.-
Even the 'experts' get it wrong .... Use Bing to find 'dreamliner battery'
to see the carnage.- I'd wait a while before switching.=0A>Linn=0A>=0A>
=0A>On 5/11/2014 2:27 AM, Bill Judge wrote:=0A>=0A>I've been kicking around
the idea of getting rid of the 2 PC625s that I lug-around and getting li
thium batteries, I could probably save 20 lbs,-but every time I get close
I read about this sort of thing: =0A>>http://advrider.com/forums/showpost.
php?p=24135454&postcount=9894=0A>>=0A>>=0A>>=0A>>So I'll probably wait
a few more years...=0A>>=0A>>=0A>>Bill Judge=0AN84WJ, RV-8, 1012 hrs=0A>>
=0A>>RV-8.blogspot.com=0A>>=0A>>=0A>>No virus found in this message.=0A>>Ch
ecked by AVG - www.avg.com=0A>>05/10/14=0A>=0A>=0A>t="_blank">http://www.
matronics.com/Navigator?RV-List=0Atp://forums.matronics.com=0A_blank">http:
=========================0A
=========================0A
=======================
Message 4
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| Subject: | Alternative engine gathering at Slobovia Outernational (MS71) |
We're hosting an alternative engine seminar this weekend here at
Slobovia Outernational, May 16-18. If you're building, flying, or just
thinking about an alternative engine, we'd love to have you attend.
If you want to come, please drop me a line at mcsophie@gmail.com or give
us a call at 601-879-9596 to RSVP so we can have a headcount for food,
etc. You're welcome to camp on the field, or bring a bedroll & find a
spot in the house or hangar. Hotels are about 20 minutes away by car,
and there's a campground about 2 miles north.
Slobovia is about 10 miles north of Jackson MS on the Memphis sectional.
Give me a shout for driving directions. Google Maps gets it right, but
some automotive GPS's do not.
Hope to see you this weekend,
Charlie
Message 5
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Jeff,
Please be sure to distinguish between Li-po and Lithium Iron Phosphate
(LiFePO4). The Iron Phosphate chemistry holds some promise for
experimental aviation. The LiPo chemistry used in R/C planes does not.
john
On 5/11/2014 9:31 AM, Jeff Luckey wrote:
> Bill,
>
> I use Li-po batts in my R/C model airplanes and they are great for
> that application, HOWEVER, they require a fair amount of care. They
> need a special charger; they are extremely sensitive to over-charging
> & being drained below a certain voltage. Generally they are very
> temperamental and need lot of baby-sitting. They are great for R/Cs
> because they are half the weight of alternatives but I track each
> charge, the number of cycles, etc for each pack that I own and
> generally treat them w/ a lot of respect.
>
> As other posters have mentioned, when they fail, it can be
> spectacular. I once watched a Nissan hatchback burn to the tires at
> my local model flying field because the owner was charging a lipo pack
> in the back seat.
>
> I don't think they are ready for prime time in Experimental aircraft.
> I think that there have been some articles in Kit Planes recently
> about this subject and I believe the author reaches the same conclusion.
>
> -Jeff
>
> ------------------------------------------------------------------------
> *From:* Dan Bergeron <dan.pat.b@gmail.com>
> *To:* rv-list@matronics.com
> *Sent:* Sunday, May 11, 2014 7:18 AM
> *Subject:* Re: RV-List: EarthX fire
>
> Good Morning
> The only lithium ion battery in my airplane is in my cell phone - no
> way I would go beyond that - the risk of thermal runaway too high and
> the potential consequences catastrophic - no thanks - fly safe
> Dan Bergeron
> RV-7A - N307TB
> 500+ hours since first
> flight Aug 6, 2009
>
>
> On Sun, May 11, 2014 at 8:53 AM, Linn Walters <flying-nut@cfl.rr.com
> <mailto:flying-nut@cfl.rr.com>> wrote:
>
> Lithium Ion and Lithium Polymer batteries are sensitive to thermal
> runaway ...... and once started are near impossible to stop. Their
> charge profiles are also different from flooded/gel batteries.
> Even the 'experts' get it wrong .... Use Bing to find 'dreamliner
> battery' to see the carnage. I'd wait a while before switching.
> Linn
>
>
> On 5/11/2014 2:27 AM, Bill Judge wrote:
>> I've been kicking around the idea of getting rid of the 2 PC625s
>> that I lug around and getting lithium batteries, I could probably
>> save 20 lbs, but every time I get close I read about this sort of
>> thing:
>> http://advrider.com/forums/showpost.php?p=24135454&postcount=9894
>>
>> So I'll probably wait a few more years...
>>
>> Bill Judge
>> N84WJ, RV-8, 1012 hrs
>> RV-8.blogspot.com <http://rv-8.blogspot.com/>
>>
>> *
>>
>>
>> *
>> No virus found in this message.
>> Checked by AVG - www.avg.com <http://www.avg.com/>
>> 05/10/14
>
> *
>
> t="_blank">http://www.matronics.com/Navigator?RV-List
> tp://forums.matronics.com
> _blank">http://www.matronics.com/contribution
>
> *
>
>
> *http://www.matro===================
>
> *
>
>
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>
>
> *
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