REFLECTOR: Battery Isolator

[michalk]

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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