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fklein(at)orcasonline.com
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 Posted: Sat Mar 12, 2011 1:56 pm Post subject: remote battery charging |
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All,
As background and as previously posted, I'm building a Europa XS
powered by an EA81 Sube variant produced by RAM Performance...it's a
MPEFIed engine w/ dual intake ports and dyno'ed at 144 hp, is fitted
w/ a geared Autoflite PSRU, and a RWS EC3 controller. Listed weight
"wet" (?) is 176 pounds, though that would not include exhaust and
cooling systems.
For the past year, I've been able to design and fab an engine mounting
frame, FG cowls, a twin radiator cooling system, a muffled 321 SS
exhaust system, and install the various EMS temp. & pressure senders.
Hopefully, the engine is hung for good...(finally).
Since the Europa-list posters are virtually all using the Rotax
engines, I'm hoping this aeroelectric-list will be a receptive place
for me to post questions related to electric issues...particularly on
the power side of things. I confess to be an absolute neophyte on all
things electrical...I'm been using the AeroElectric Connection and an
old copy of Tony Bingelis' Firewall Forward as my primary references.
A couple of current (no pun intended) questions:
Dual batteries will be located in the aft fuselage for W & B
issues...I want to be able to recharge the batteries by installing a
(more or less) flush, weatherproof receptacle and plug in the side of
the FG fuselage, one which would replace the alligator clips on the
charger. I believe I erred in buying a "Piper type socket" and "Piper
type plug" (Acft. Spruce p/n 11-00500 and p/n 11042) thinking they
would serve, but have concluded that their purpose is for "jump
starting" rather than battery recharging. (If this is in fact so,
they'll be returned.) Soooooo...can anyone suggest a brand/type/
model receptacle - plug combination suitable for battery charging?
As for the batteries, originally I was thinking of using (1) Odyssey
#680 and (1) #310 as back up; however, I'm persuaded by Bob's book's
Fig. Z-19 and rationale for switching out one of two dual batteries of
equal size during annual...thus...I'm now looking at using (2) Odyssey
#545s (14AH each) for a total weight of 23.4 pounds. I see that B & C
lists a slightly more powerful (16AH) battery, a BC116-1 w/ weight of
14.6 pounds (each). I can't seem to find any performance specs such as
CCA rating for the B & C batteries...are they available for comparison
w/ the Odysseys?...and do these brands utilize the same battery
technology?
Much obliged for any advice or assistance,
Fred
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nuckolls.bob(at)aeroelect
Guest
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| Posted: Sat Mar 12, 2011 8:50 pm Post subject: remote battery charging |
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Dual batteries will be located in the aft fuselage for W & B
issues...I want to be able to recharge the batteries by installing a
(more or less) flush, weatherproof receptacle and plug in the side of
the FG fuselage, one which would replace the alligator clips on the
charger. I believe I erred in buying a "Piper type socket" and "Piper
type plug" (Acft. Spruce p/n 11-00500 and p/n 11042) thinking they
would serve, but have concluded that their purpose is for "jump
starting" rather than battery recharging. (If this is in fact so,
they'll be returned.) Soooooo...can anyone suggest a brand/type/model
receptacle - plug combination suitable for battery charging?
You CAN charge batteries through such connectors . . . as
well as crank engines if that need arises. It depends
on how you wire the connector to your airplane. If you
have dual batteries, then getting the pair of batteries
connected together for charging purposes poses a problem
for needing to have contactors closed.
So if the goal is battery charging/maintenance only,
then about anything is fine. Take a look at trailer
lighting connectors like . ..
[img]cid:.0[/img]
Walmart automotive has some like this. You need
three or more pins. One for ground and one to each
battery through an inline fuse (can be a fuse
on the battery bus). If you don't need to lock
the canopy closed during charging ops, consider
mounting the jack inside the airplane so you don't
need to poke a hole in the skin. If the socket is
inside, remove the spring loaded "lid". It's not
needed and only gets in the way.
I'm now looking at using (2) Odyssey #545s (14AH each) for a total
weight of 23.4 pounds. I see that B & C lists a slightly more
powerful (16AH) battery, a BC116-1 w/ weight of 14.6 pounds (each).
I can't seem to find any performance specs . . .
If you're doing the yearly change-out of the oldest
battery, absolute performance is not significant.
The two batteries in parallel (on less than two
years old, the other less than one year old)
are going to crank your engine just fine. Buy
the cheapest batteries you can find that have
connections which support cranking currents.
Bob . . .
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johnciolino(at)comcast.ne
Guest
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| Posted: Sun Mar 13, 2011 2:30 am Post subject: remote battery charging |
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Take a look at www.powerlet.com. They make receptacles for charging motorcycle batteries which could be adapted. Especially if, as Bob suggests, you mount them inside the cockpit. I don’t think there are any 3 wire receptacles so you will have to use one for each battery or split the power feed. The nice thing is that you can get a receptacle with the 2 prong SAE connector that will plug into the harness from most battery tender type chargers.
John Ciolino
RV-8 N894Y
From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of Robert L. Nuckolls, III
Sent: Saturday, March 12, 2011 10:45 PM
To: aeroelectric-list(at)matronics.com
Subject: Re: remote battery charging
Dual batteries will be located in the aft fuselage for W & B
issues...I want to be able to recharge the batteries by installing a
(more or less) flush, weatherproof receptacle and plug in the side of
the FG fuselage, one which would replace the alligator clips on the
charger. I believe I erred in buying a "Piper type socket" and "Piper
type plug" (Acft. Spruce p/n 11-00500 and p/n 11042) thinking they
would serve, but have concluded that their purpose is for "jump
starting" rather than battery recharging. (If this is in fact so,
they'll be returned.) Soooooo...can anyone suggest a brand/type/model
receptacle - plug combination suitable for battery charging?
You CAN charge batteries through such connectors . . . as
well as crank engines if that need arises. It depends
on how you wire the connector to your airplane. If you
have dual batteries, then getting the pair of batteries
connected together for charging purposes poses a problem
for needing to have contactors closed.
So if the goal is battery charging/maintenance only,
then about anything is fine. Take a look at trailer
lighting connectors like . ..
[img]cid:image001.jpg(at)01CBE147.9F82D3F0[/img]
Walmart automotive has some like this. You need
three or more pins. One for ground and one to each
battery through an inline fuse (can be a fuse
on the battery bus). If you don't need to lock
the canopy closed during charging ops, consider
mounting the jack inside the airplane so you don't
need to poke a hole in the skin. If the socket is
inside, remove the spring loaded "lid". It's not
needed and only gets in the way.
I'm now looking at using (2) Odyssey #545s (14AH each) for a total
weight of 23.4 pounds. I see that B & C lists a slightly more
powerful (16AH) battery, a BC116-1 w/ weight of 14.6 pounds (each).
I can't seem to find any performance specs . . .
If you're doing the yearly change-out of the oldest
battery, absolute performance is not significant.
The two batteries in parallel (on less than two
years old, the other less than one year old)
are going to crank your engine just fine. Buy
the cheapest batteries you can find that have
connections which support cranking currents.
Bob . . .
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richardreynolds(at)cox.ne
Guest
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| Posted: Sun Mar 13, 2011 4:01 am Post subject: remote battery charging |
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Fred,
In the aviation electrical section at West Marine, look for:
Marinco ConnectPro Trolling Motor Plug and Receptacle, model 1422591, $45.
It is small, light and heavy duty. I put mine under the plane. I do not "jump start" the plane from this connection, but sometimes there is a heavy current 10-15 A when recharging a dead battery after the master switch has been left on.
I used Bob's Z-31 design to protect the battery from reverse polarity and 24 V.
Richard Reynolds
Norfolk VA
RV-6A - N841RV
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Mauledriver(at)nc.rr.com
Guest
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| Posted: Sun Mar 13, 2011 6:37 am Post subject: remote battery charging |
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On 3/12/2011 10:45 PM, Robert L. Nuckolls, III wrote: | Quote: | If you don't need to lock
the canopy closed during charging ops, consider
mounting the jack inside the airplane so you don't
need to poke a hole in the skin. If the socket is
inside, remove the spring loaded "lid". It's not
needed and only gets in the way
Bob . . . |
I took this approach on my not-yet-flying RV10 with dual Odysseys. Used these "XLR" connectors:
http://www.radioshack.com/product/index.jsp?productId=2104076#
http://www.radioshack.com/product/index.jsp?productId=2103444&CAWELAID=107593419
With dual batteries and scheduled swap outs, I'm thinking charging should never become a regular or normal procedure. Therefore, no holes in the skin.
I mounted the XLR connector on the rear baggage bulkhead, inches from the batts, and bypassed the contactors with inline fuses. The baggage door has to be opened to access the jack.
My charger came with an inline plug so I can attach the regular alligator clamps or the XLR plug.
Thanks Bob and the List for guiding me on this.
Bill "all I talk about these days is paint" Watson
[quote][b]
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user9253
Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan
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