Today's Message Index:
----------------------
1. 11:53 AM - Re: Charging with a maintainer (skywagon185guy)
2. 06:33 PM - Re: Charging with a maintainer (Ron Bur)
3. 07:01 PM - Re: Charging with a maintainer (Robert L. Nuckolls, III)
4. 07:07 PM - Re: Switched voltage generator (Robert L. Nuckolls, III)
5. 07:08 PM - Re: Charging with a maintainer (Ron Burnett)
6. 10:23 PM - LiFe Battery (H. Ivan Haecker)
7. 10:50 PM - Re: LiFe Battery (Stuart Hutchison)
8. 11:03 PM - Re: LiFe Battery (H. Ivan Haecker)
Message 1
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| Subject: | Re: Charging with a maintainer |
Maintainers . . .
Ron,
Most general purpose 12V battery maintainers are low current. Usually
under 1 amp. So, if your cig lighter is always "hot" that should work well.
Suggestion: After the maintainer has operated for a few hours or a day, be
sure to check the battery voltage at the battery. It should be in the 13.2
to 13.5 range.
Some maintainers are in error with their final float setting voltage.
D
On Sat, Jun 25, 2022 at 9:38 PM Robert L. Nuckolls, III <
nuckolls.bob@aeroelectric.com> wrote:
> At 01:10 PM 6/23/2022, you wrote:
>
> ronburnett@charter.net>
>
> Just bought a C170. Is it possible to hook a battery maintainer to it
> through the cigar lighter port? It only has a 3 amp breaker
>
>
> Great ol' bird. Fly comfortably!
>
> Yes, if your cigar lighter is 'always hot',
> i.e. tied directly to battery via a 5A or
> smaller fuse/brealer at the battery, then that
> connector is the obvious choice for battery maintenance.
>
>
> Bob . . .
>
> Un impeachable logic: George Carlin asked, "If black boxes
> survive crashes, why don't they make the whole airplane
> out of that stuff?"
>
Message 2
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| Subject: | Re: Charging with a maintainer |
Bob and D,
Thanks for the info. Sadly, right now at least, It is wired on the main bus t
hat requires the switch to be on.
Since this is a certified plane, can I add a hot buss on the forward firewal
l for the maintainer and the clock? Legally? If so, how would it be recommen
ded?
Thanks,
Ron Burnett
May you have the Lord's blessings today!
Sent from my iPad
> On Jun 28, 2022, at 1:54 PM, skywagon185guy <skywagon185@gmail.com> wrote:
>
> =EF=BB
> Maintainers . . .
> Ron,
> Most general purpose 12V battery maintainers are low current. Usually und
er 1 amp. So, if your cig lighter is always "hot" that should work well.
> Suggestion: After the maintainer has operated for a few hours or a day, b
e sure to check the battery voltage at the battery. It should be in the 13.
2 to 13.5 range.
> Some maintainers are in error with their final float setting voltage.
> D
>
>> On Sat, Jun 25, 2022 at 9:38 PM Robert L. Nuckolls, III <nuckolls.bob@aer
oelectric.com> wrote:
>> At 01:10 PM 6/23/2022, you wrote:
.net>
>>>
>>> Just bought a C170. Is it possible to hook a battery maintainer to it th
rough the cigar lighter port? It only has a 3 amp breaker
>>>
>>
>> Great ol' bird. Fly comfortably!
>>
>> Yes, if your cigar lighter is 'always hot',
>> i.e. tied directly to battery via a 5A or
>> smaller fuse/brealer at the battery, then that
>> connector is the obvious choice for battery maintenance.
>>
>>
>> Bob . . .
>>
>> Un impeachable logic: George Carlin asked, "If black boxes
>> survive crashes, why don't they make the whole airplane
>> out of that stuff?"
Message 3
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| Subject: | Re: Charging with a maintainer |
At 08:32 PM 6/28/2022, you wrote:
>Bob and D,
>
>Thanks for the info. Sadly, right now at least, It is wired on
>the main bus that requires the switch to be on.
>
>Since this is a certified plane, can I add a hot buss on the
>forward firewall for the maintainer and the clock? Legally?
>If so, how would it be recommended?
You have an electric clock? Then is there a fuse
holder mounted on a bracket next to the battery
contactor? Where is your battery located . . . on
firewall or behind cabin?
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
Message 4
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| Subject: | Re: Switched voltage generator |
At 07:12 PM 6/12/2022, you wrote:
>
>I need suggestion for a switched Voltage and current regulator to be
>used with a PM generator. I have a Revmaster engine with a burned
>stator which I am replacing. The stock voltage generator is a shunt
>type. I see plenty of switching voltage regulators on line but they
>all look like they were designed for use on a printed circuit board,
>not for the firewall of a airplane. Thanks
>
>Paul
It's not possible to tell whose rectifier/regulator
is of the shunt/series type without having access
to the schematic. However, modern 'shunt' regulators
(more often called FET regulators) are not as
abusive to the PM alternator as the SCR shunt devices
circa 1965.
The Revmaster alternator stator has some
serious design problems that make it prone
failure of the winding.
Hence, type of battery and style of rectifier/
regulator may have some effect on service life
of the stator windings . . . but they are not
root cause for the failures.
Bob . . .
Un impeachable logic: George Carlin asked, "If black boxes
survive crashes, why don't they make the whole airplane
out of that stuff?"
Message 5
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| Subject: | Re: Charging with a maintainer |
There is a tube fuse for the clock hanging by the battery which is mounted p
ax side firewall forward.
Sent from my iPhone
> On Jun 28, 2022, at 9:02 PM, Robert L. Nuckolls, III <nuckolls.bob@aeroele
ctric.com> wrote:
>
> =EF=BB At 08:32 PM 6/28/2022, you wrote:
>> Bob and D,
>>
>> Thanks for the info. Sadly, right now at least, It is wired on
>> the main bus that requires the switch to be on.
>>
>> Since this is a certified plane, can I add a hot buss on the
>> forward firewall for the maintainer and the clock? Legally?
>> If so, how would it be recommended?
>
> You have an electric clock? Then is there a fuse
> holder mounted on a bracket next to the battery
> contactor? Where is your battery located . . . on
> firewall or behind cabin?
>
>
>
>
>
> Bob . . .
>
> Un impeachable logic: George Carlin asked, "If black boxes
> survive crashes, why don't they make the whole airplane
> out of that stuff?"
Message 6
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|
Three years ago I decided to equip my little C-85 powered aircraft with a
B&C starter and LiFe battery ( Shorai 18 Ah). No provision for charging
onboard. It worked great and would easily start the engine a dozen times
before I would charge it with an 800mA Battery Tender that was advertised
as suitable for both lead acid and LiFe batteries. It was never discharged
to the point that it failed to rapidly spin the engine. All went well until
a few months ago when I noticed that the battery became sluggish after only
a few starts. Now it=99s only good for one start before it needs rech
arging.
So the battery is now almost useless. I had (of course!) hoped for a longer
useful life. The big question is: have I mismanaged the battery by
recharging it only occasionally instead of more often, or did I use an
inappropriate charger, or just bad luck of the draw on this particular
battery? Thanks for any opinions.
Ivan Haecker
Message 7
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| Subject: | Re: LiFe Battery |
There is much misleading information out there suggesting chargers suitable for
Lead Acid are also suitable for Lithium. Do they work? Yes. Do they compromise
Lithium longevity? Also yes, absolutely, unless they have a Lithium specific
mode.
Kind regards, Stu
Sent from my iPhone
> On 29 Jun 2022, at 15:31, H. Ivan Haecker <hivanhaecker@gmail.com> wrote:
>
> Three years ago I decided to equip my little C-85 powered aircraft with a B&C
starter and LiFe battery ( Shorai 18 Ah). No provision for charging onboard.
It worked great and would easily start the engine a dozen times before I would
charge it with an 800mA Battery Tender that was advertised as suitable for both
lead acid and LiFe batteries. It was never discharged to the point that it
failed to rapidly spin the engine. All went well until a few months ago when I
noticed that the battery became sluggish after only a few starts. Now its only
good for one start before it needs recharging. So the battery is now almost
useless. I had (of course!) hoped for a longer useful life. The big question is:
have I mismanaged the battery by recharging it only occasionally instead of
more often, or did I use an inappropriate charger, or just bad luck of the draw
on this particular battery? Thanks for any opinions.
>
> Ivan Haecker
Message 8
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| Subject: | Re: LiFe Battery |
The charger has two modes. One for lead acid and one for LiFe . I assume
the LiFe mode charges at a slightly higher voltage?
Ivan Haecker
On Wed, Jun 29, 2022 at 12:52 AM Stuart Hutchison <
stuart@stuarthutchison.com.au> wrote:
> stuart@stuarthutchison.com.au>
>
> There is much misleading information out there suggesting chargers
> suitable for Lead Acid are also suitable for Lithium. Do they work? Yes.
Do
> they compromise Lithium longevity? Also yes, absolutely, unless they have
a
> Lithium specific mode.
>
> Kind regards, Stu
>
> Sent from my iPhone
>
> > On 29 Jun 2022, at 15:31, H. Ivan Haecker <hivanhaecker@gmail.com>
> wrote:
> >
> > =EF=BBThree years ago I decided to equip my little C-85 powered airc
raft with
> a B&C starter and LiFe battery ( Shorai 18 Ah). No provision for charging
> onboard. It worked great and would easily start the engine a dozen times
> before I would charge it with an 800mA Battery Tender that was advertised
> as suitable for both lead acid and LiFe batteries. It was never discharge
d
> to the point that it failed to rapidly spin the engine. All went well unt
il
> a few months ago when I noticed that the battery became sluggish after on
ly
> a few starts. Now it=99s only good for one start before it needs re
charging.
> So the battery is now almost useless. I had (of course!) hoped for a long
er
> useful life. The big question is: have I mismanaged the battery by
> recharging it only occasionally instead of more often, or did I use an
> inappropriate charger, or just bad luck of the draw on this particular
> battery? Thanks for any opinions.
> >
> > Ivan Haecker
>
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