Today's Message Index:
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1. 06:44 AM - Re: Lithium Battery (Sonja Englert)
2. 12:51 PM - Over 2000 Courtesy Cars (gbrasch)
Message 1
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| Subject: | Re: Lithium Battery |
The Rotax engines have generators, which cannot by design produce much
power at low rpm. If you have a high electrical load, on the ground and in
flight at low rpm the battery will have to provide this power.
The battery only gets charged at cruise rpm.
It is best to minimize the electrical loads and times spent at low rpm. If
necessary, only turn those items on after takeoff and turn them off before
landing.
Some installations have a separate alternator for that reason.
Lithium batteries can help, but they also need to be charged. Charging them
without a battery management system specifically for them will greatly
reduce their life and increase the chance of issues with them. I don't
think it is worth the expense.
I have a fairly large lead battery in mine, in the back which helps with
the cg during solo flight.
Sonja
On Tue, Aug 11, 2020 at 4:26 PM Michael Cowan <mikey.flyer53@gmail.com>
wrote:
> FWIW I=99m installing a Shorai LFX19A4-BS12; 19Ah, 285 CCA LiFePO4
> motorcycle battery. I have no direct experience, so this is not an
> endorsement. It=99s small (5.83x3.39x3.46), and light (2.47lb). W
e=99ll see.
> That=99s why they call it experimental.
> Mike Cowan
>
> On Tue, Aug 11, 2020 at 11:42 AM Mark Fox <saafbusiness@gmail.com> wrote:
>
>> What's the group experience with swapping out the lead acid
>> motorcycle battery for Lithium ion or lithium polymer ?
>>
>> I have noticed one thing with the Stratus set up. If I have a steep
>> decline at low power, the Stratus will sometimes power off - I assume
>> because of low voltage.
>>
>> At least for me the 912 (1995 vintage) has always had an issue with not
>> enough electrical power if heavily loaded....LED's lights in recent year
s
>> has really helped
>>
>> My current lead acid battery is the typical 10 Ah...but there are lithiu
m
>> at better Ah and cranking amps at 1/5 the weight. Also it could eliminat
e
>> teh need to hook up a trickle charger after every flight before heading
>> home.
>>
>> Just wonder if anyone has experience...theoretically there are many more
>> safety features on these batteries in the last couple years to stop runa
way
>> and fires.
>>
>> Thanks
>>
>
Message 2
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| Subject: | Over 2000 Courtesy Cars |
AirportCourtesyCars.com website has just surpassed over 2000 courtesy car listings
at over 1,540 locations nationwide. Listings include pilot comments, car pictures
and more. The website is kept updated with new listings and corrections
by pilots like you. You can contact the owner, Glenn Brasch with updates at
airportcars101@gmail.com Funding of the site is dependent mostly on donations,
which are much appreciated.
--------
Glenn Brasch
RV-9A Flying
Medevac Helicopter Pilot (Ret)
Owner, "Airport Courtesy Cars" Website www.airportcourtesycars.com
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http://forums.matronics.com/viewtopic.php?p=497698#497698
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