The Murphy Builders Site

What type of battery John and what kind of box is it in. I use to have a
cheater wire/connection in Howard's CYP for just that (well more so when he
left the master on)... and he boiled the battery over once.. or twice...

----- Original Message -----
From: "John R. Davidson" <skidaddy20000@hotmail.com>
To: "Rebel List" <rebel-builders@dcsol.com>
Sent: Monday, February 13, 2012 9:28 PM
Subject: [rebel-builders] Battery Charging

Hello group, My Rebel's battery is way back in the tail cone for wt&bal
reasons.This makes it very inconvenient to get to, to put the charger
cables on when wanting to trickle a little charge on while getting ready
to fly on a cold winter morning. I was thinking of running an "extension
cord" from the battery to just behind the pilot seat, where it would be
easier to reach and attach the charger cables. Any thoughts,
alternatives, suggestions? Thanks in advance. John



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John,

You could install an external power receptacle in the skin closer to the
battery location........ since you'll be down there anyways. Then there
wouldn't be the need for the extension cord.

Here's a link to some useful battery TLC also
http://www.avweb.com/news/savvyaviator/191348-1.html

Cheers,
Jeff


On Mon, Feb 13, 2012 at 7:00 PM, Wayne G. O'Shea <oifa@irishfield.on.ca>wrote:

What type of battery John and what kind of box is it in. I use to have a
cheater wire/connection in Howard's CYP for just that (well more so when he
left the master on)... and he boiled the battery over once.. or twice...

----- Original Message -----
From: "John R. Davidson" <skidaddy20000@hotmail.com>
To: "Rebel List" <rebel-builders@dcsol.com>
Sent: Monday, February 13, 2012 9:28 PM
Subject: [rebel-builders] Battery Charging

Hello group, My Rebel's battery is way back in the tail cone for wt&bal
reasons.This makes it very inconvenient to get to, to put the charger
cables on when wanting to trickle a little charge on while getting ready
to fly on a cold winter morning. I was thinking of running an "extension
cord" from the battery to just behind the pilot seat, where it would be
easier to reach and attach the charger cables. Any thoughts,
alternatives, suggestions? Thanks in advance. John



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I've never had a dead battery with one of these on my airplane...

http://www.amazon.com/Battery-Tender-02 ... 00CITK8S/r
ef=sr_1_1?ie=UTF8&qid=1329195740&sr=8-1

Mike

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of John
R. Davidson
Sent: Monday, February 13, 2012 5:28 PM
To: Rebel List
Subject: [rebel-builders] Battery Charging





Hello group, My Rebel's battery is way back in the tail cone for wt&bal
reasons.This makes it very inconvenient to get to, to put the charger cables
on when wanting to trickle a little charge on while getting ready to fly on
a cold winter morning. I was thinking of running an "extension cord" from
the battery to just behind the pilot seat, where it would be easier to reach
and attach the charger cables. Any thoughts, alternatives, suggestions?
Thanks in advance. John




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John,
A good quality battery tender plugged in all of the time will keep your battery up without having to worry about overcharging it. If you extend the cables forward be sure to fuse it at the battery. I have been using them for years and have found them to be a great investment. They add years of life to part time use batteries.

Curtis

From: skidaddy20000@hotmail.com
To: rebel-builders@dcsol.com
Subject: [rebel-builders] Battery Charging
Date: Mon, 13 Feb 2012 21:28:08 -0500





Hello group, My Rebel's battery is way back in the tail cone for wt&bal reasons.This makes it very inconvenient to get to, to put the charger cables on when wanting to trickle a little charge on while getting ready to fly on a cold winter morning. I was thinking of running an "extension cord" from the battery to just behind the pilot seat, where it would be easier to reach and attach the charger cables. Any thoughts, alternatives, suggestions? Thanks in advance. John



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My battery is in the back to but I put the master solenoid on the inside
firewall and that's where I hook up charger or booster cables.

On 13/02/2012 9:28 PM, John R. Davidson wrote:

Hello group, My Rebel's battery is way back in the tail cone for wt&bal reasons.This makes it very inconvenient to get to, to put the charger cables on when wanting to trickle a little charge on while getting ready to fly on a cold winter morning. I was thinking of running an "extension cord" from the battery to just behind the pilot seat, where it would be easier to reach and attach the charger cables. Any thoughts, alternatives, suggestions? Thanks in advance. John



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Good day I am an old builder of an unfinished Rebel # 562 ( flying with a
good Partenavia P66C .. up to the 2000 Hrs of the O320 )
What Drew is describing is one of the most dangerous Master solenoid
position with respect to the battery position : the Master solenoid should
be very very closed to the positive terminal of the battery ( in the order
of few inches .. better less than 10 ) .
In case of any accidental short to ground of the long positive cable from
the rear battery position to the firewall , there is a possibility of
melting the aluminium and possibly a fire hazard as even a 25AH battery
can produce hundreds of amperes when shorted .
If you accept my 5 cents of contribution , move the Master ASAP !
Ciao


Francesco Simioni

Office +39 0445 381199
Fax +39 0445 381179
Mobile +39 348 3341195
Skype francescosimioni
Web site: http://www.atptelec.com




Drew Dalgleish <drewjan@cabletv.on.ca>
Sent by: <mike.davis@dcsol.com>
14/02/2012 17.12
Please respond to
<rebel-builders@dcsol.com>


To
rebel-builders@dcsol.com
cc

Fax to

Subject
Re: [rebel-builders] Battery Charging





My battery is in the back to but I put the master solenoid on the inside
firewall and that's where I hook up charger or booster cables.

On 13/02/2012 9:28 PM, John R. Davidson wrote:

Hello group, My Rebel's battery is way back in the tail cone for wt&bal

reasons.This makes it very inconvenient to get to, to put the charger
cables on when wanting to trickle a little charge on while getting ready
to fly on a cold winter morning. I was thinking of running an "extension
cord" from the battery to just behind the pilot seat, where it would be
easier to reach and attach the charger cables. Any thoughts,
alternatives, suggestions? Thanks in advance. John

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Surprised the inspector passed that Drew. The battery contactor is
supposed to be located at the battery. It's true that heavy wire such as
4 awg or thicker will usually melt enough aluminum away to disconnect
any short circuit that might occur on it. Unfortunately the arcing tends
to start fires while that is occurring. Properly installed heavy wires
are low risk anyway except in a prang.

Generally up to a 5 amp (fused at the battery) circuit is considered
acceptable for feeding a clock, electronic keep alive circuits, etc. and
some folks put a battery maintainer on that line. I like the Schumacher
1.5 amp units for about US$20. from Wall Mart. A cigarette lighter
socket on that line can be useful for powering hand held devices.

Anything larger than 5 amps and the recommendation is to put another
relay at the battery. Some guys place a mini $4. automotive relay at the
battery that closes any time a battery charger is connected to the
"extension cord" that is in place to charge the battery. That way those
wires are also zero risk in the event of a prang or fire. This can even
be wired to a cigarette lighter socket but then you might want to wire
the relay to close when either the master switch was on OR a battery
charger was plugged in to make it more useful.

Now if we move into the modern world of engines that require electricity
to run then it makes a lot of sense to put fuses at the battery for
whatever the electronics requires as I don't like extra relays,
contactors, or failure points between me and the computer/fuel pump that
keeps my engine running. With an aft mounted battery I personally would
consider it reasonable to have the battery contactor forward and take
the battery circuits to the engine off the live side of the contactor.
So maybe you are just way ahead of the game Drew and have subconsciously
prepared for one of these new fangled EFI engines :)

Ken

On 14/02/2012 11:12 AM, Drew Dalgleish wrote:

My battery is in the back to but I put the master solenoid on the
inside firewall and that's where I hook up charger or booster
cables.

On 13/02/2012 9:28 PM, John R. Davidson wrote:

Hello group, My Rebel's battery is way back in the tail cone for
wt&bal reasons.This makes it very inconvenient to get to, to put
the charger cables on when wanting to trickle a little charge on
while getting ready to fly on a cold winter morning. I was thinking
of running an "extension cord" from the battery to just behind the
pilot seat, where it would be easier to reach and attach the
charger cables. Any thoughts, alternatives, suggestions? Thanks in
advance. John

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Hi John,
I extended the plug that came with my float charger to just forward of the rear comp. bulkhead.
I keep thinking I'd like an adaptor similar to what the Nascar guys use. The plug looks like heavyduty headset plugs and the jacks could be easily mounted on the outside and covered.
Just a thought
Curt Martin
N97MR



-----Original Message-----
From: John R. Davidson <skidaddy20000@hotmail.com>
To: Rebel List <rebel-builders@dcsol.com>
Sent: Mon, Feb 13, 2012 9:33 pm
Subject: [rebel-builders] Battery Charging




Hello group, My Rebel's battery is way back in the tail cone for wt&bal
easons.This makes it very inconvenient to get to, to put the charger cables on
hen wanting to trickle a little charge on while getting ready to fly on a cold
inter morning. I was thinking of running an "extension cord" from the battery
o just behind the pilot seat, where it would be easier to reach and attach the
harger cables. Any thoughts, alternatives, suggestions? Thanks in advance.
ohn

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My battery is also in the back of my aircraft. After climbing back every
time I wanted to hook up my float charger I installed two color coded plugs
on the side of the aircraft. I can now plug in my charger when I need to.
Works great.

Hank
307R

On Tue, Feb 14, 2012 at 8:15 PM, <rebflyer@aol.com> wrote:

Hi John,
I extended the plug that came with my float charger to just forward of
the rear comp. bulkhead.
I keep thinking I'd like an adaptor similar to what the Nascar guys use.
The plug looks like heavyduty headset plugs and the jacks could be easily
mounted on the outside and covered.
Just a thought
Curt Martin
N97MR



-----Original Message-----
From: John R. Davidson <skidaddy20000@hotmail.com>
To: Rebel List <rebel-builders@dcsol.com>
Sent: Mon, Feb 13, 2012 9:33 pm
Subject: [rebel-builders] Battery Charging




Hello group, My Rebel's battery is way back in the tail cone for wt&bal
easons.This makes it very inconvenient to get to, to put the charger
cables on
hen wanting to trickle a little charge on while getting ready to fly on a
cold
inter morning. I was thinking of running an "extension cord" from the
battery
o just behind the pilot seat, where it would be easier to reach and attach
the
harger cables. Any thoughts, alternatives, suggestions? Thanks in advance.
ohn

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OK John forget that I suggested that. My battery was on the firewall
when the plane was first inspected so that's how it passed. I guess TC
should have snagged it when they inspected my engine change but they
didn't so I've gone the last 14 years or so blissfully ignorant and
somehow survived. I recently changed the battery cable from #4 to #2 to
get better starter performance and the old cable I removed was in new
condition. It makes sense to move the relay back to the battery but I
think for me it makes even more sense to move the battery back to the
firewall and carry a jug of water for ballast when lightly loaded. Ken
I'm in that modern world I have Emag electronic ignition replacing both
mags so I need electrical power to start my engine.

On 14/02/2012 12:18 PM, Ken wrote:

Surprised the inspector passed that Drew. The battery contactor is
supposed to be located at the battery. It's true that heavy wire such as
4 awg or thicker will usually melt enough aluminum away to disconnect
any short circuit that might occur on it. Unfortunately the arcing tends
to start fires while that is occurring. Properly installed heavy wires
are low risk anyway except in a prang.

Generally up to a 5 amp (fused at the battery) circuit is considered
acceptable for feeding a clock, electronic keep alive circuits, etc. and
some folks put a battery maintainer on that line. I like the Schumacher
1.5 amp units for about US$20. from Wall Mart. A cigarette lighter
socket on that line can be useful for powering hand held devices.

Anything larger than 5 amps and the recommendation is to put another
relay at the battery. Some guys place a mini $4. automotive relay at the
battery that closes any time a battery charger is connected to the
"extension cord" that is in place to charge the battery. That way those
wires are also zero risk in the event of a prang or fire. This can even
be wired to a cigarette lighter socket but then you might want to wire
the relay to close when either the master switch was on OR a battery
charger was plugged in to make it more useful.

Now if we move into the modern world of engines that require electricity
to run then it makes a lot of sense to put fuses at the battery for
whatever the electronics requires as I don't like extra relays,
contactors, or failure points between me and the computer/fuel pump that
keeps my engine running. With an aft mounted battery I personally would
consider it reasonable to have the battery contactor forward and take
the battery circuits to the engine off the live side of the contactor.
So maybe you are just way ahead of the game Drew and have subconsciously
prepared for one of these new fangled EFI engines :)

Ken

On 14/02/2012 11:12 AM, Drew Dalgleish wrote:

My battery is in the back to but I put the master solenoid on the
inside firewall and that's where I hook up charger or booster
cables.

On 13/02/2012 9:28 PM, John R. Davidson wrote:

Hello group, My Rebel's battery is way back in the tail cone for
wt&bal reasons.This makes it very inconvenient to get to, to put
the charger cables on when wanting to trickle a little charge on
while getting ready to fly on a cold winter morning. I was thinking
of running an "extension cord" from the battery to just behind the
pilot seat, where it would be easier to reach and attach the
charger cables. Any thoughts, alternatives, suggestions? Thanks in
advance. John

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Hi John

I'd fit a fuse or circuit breaker at the battery box just in case your
extension lead shorts to earth !!

If you make it about 10A it will support a trickle charge but still protect
against a short in your lead

Nig
745E

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of John
R. Davidson
Sent: 14 February 2012 02:28
To: Rebel List
Subject: [rebel-builders] Battery Charging





Hello group, My Rebel's battery is way back in the tail cone for wt&bal
reasons.This makes it very inconvenient to get to, to put the charger cables
on when wanting to trickle a little charge on while getting ready to fly on
a cold winter morning. I was thinking of running an "extension cord" from
the battery to just behind the pilot seat, where it would be easier to reach
and attach the charger cables. Any thoughts, alternatives, suggestions?
Thanks in advance. John



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-----
No virus found in this message.
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Version: 2012.0.1913 / Virus Database: 2112/4807 - Release Date: 02/13/12
-----
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2012.0.1913 / Virus Database: 2112/4807 - Release Date: 02/13/12




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Thank you all for your suggestions. I had thought of the danger of shorting and planned to put a fuse on the hot wire. The recommendations on size are interesting
and will bear some thought.

I'll mull it all over for a while, then let you know what I decide and how it turns out.

Thanks again.

John






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