REFLECTOR: Battery Isolator
michalk
michalk at awpi.com
Wed Jan 3 09:26:47 CST 2007
The best part about this is that we can scratch our own itch. I love
this stuff.
I opted for pilot workload simplicity. Automation is used wherever
possible, as well as solid state. For the stuff that I don't trust with
the magic smoke (keeping it inside the wires), I have the typical toggle
switches.
My "must work" toggle switches are in a 3x3 row low on the panel just
above the keel. Everything else is solid state or automated. These
switches are for everything that keeps the plane in the air:
Top row:
main battery solenoid
join busses
essential battery solenoid
Middle row:
fuel pump
electronic fuel injectors
electronic ignition
Bottom Row:
magneto
alternator
starter
Even with what I consider to be a fairly simple dual bus system, the
emegency procedures are complex. I have procedures for failed
alternator, failed battery times two, which leads to a lot of other
options. The pilot should know how each system is affected by a power
problem. Just a suggestion when developing your system.
Terry Miles wrote:
> I don't know if it helps you guys, or if you've seen it. It helps fill in
> the picture some. Nuckoll's did a 4 page article: "What's all this Battery
> Isolator Stuff About" You can find it on his web site, or maybe the
> matronics archives or I can email to you guys.
>
> In the end I will likely not have an "in flight" marine type isolator. And
> I struggled w/ keeping the #2 batt and distribution/recharge wires
> completely isolated, and still keep all the features I envisioned.
>
> If it helps any I have a text explanation of where I am headed with all this
> and why on my web site under "wiring". www.knightflyr.com NOTHING IS HOOKED
> UP. And the website generally is a neglected sub-project. I am in the
> throws now of sorting out all the details. Every time I go to pick up a
> pair of crimpers, I am made aware that I have more details to resolve.
> Nuckolls Z-30 doesn't work for me, and I am single alternator.
> Terry
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> Behalf Of Alex
> Sent: Tuesday, January 02, 2007 1:43 PM
> To: 'Velocity Aircraft Owners and Builders list'
> Subject: Re: REFLECTOR: Battery Isolator
>
> Hey Brian-
> Can you send me a schematic of how you installed the West Marine isolator? I
> have one also- and trying to make sure I get it in there correctly-
> currently have separate relays for each battery installed, and I have a
> cross over relay , but not sure if I will still need it or not......
>
> Alex
> alex157 at pwhome.com
>
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
> Behalf Of Michael Watson
> Sent: Tuesday, January 02, 2007 11:51 AM
> To: Velocity Aircraft Owners and Builders list
> Subject: Re: REFLECTOR: Battery Isolator
>
> Thanks Kurt/Brian,
>
> Any comments AL.
>
> I was looking at the ASE Sure-Power 70Amp unit for $40.
> Guess I'll buy and try it.
>
> Mike W.
>
>
> On 1/2/07, Brian Michalk <michalk at awpi.com> wrote:
>
>>I'm using a marine battery isolator from West Marine. Seems to work
>>okay so far. Not flying yet.
>>I voided my warranty by opening it up to see the guts. Simple
>>comparator circuit with time delay which drives a relay. When either
>>battery is being charged, they are connected together.
>>
>>A person could easily make one, but for the $50 or so, it's not worth it.
>>
>>We use the solid state ones at work, and they seem to work okay.
>>
>>Michael Watson wrote:
>>
>>>Does anyone using dual batteries with an internal regulated
>>>alternator, have a good source and part number for a battery
>>>isolator? Thanks.
>>>
>>>--
>>>Mike W
>>>Velocity Elite RG
>>>Franklin /IVO Electric CS
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