Ira
Interesting design addition you mention. Understand your point.
Actually I am going for minimalist Europa System. So thanks I just
wanted to check that I had the fundamentals correct.
I do have a Dynon but that has its own battery and I have a good handheld
and a portable GPS so I figure that from the avionics side I am ok.
Incidentally I fired the dynon and the electrical system up yesterday and
it talked to all the devices and no sparks or smoke. The radio worked fine
as well.
My turbo rotax 912 has a mechanical pump as well as the electric pumps.
So I think that I am going to stick with simple.
many thanks again will
William Daniell
LONGPORT
+57 310 295 0744
On Mon, Sep 12, 2016 at 5:45 AM, rampil <ira.rampil@gmail.com> wrote:
>
> Hi Will,
>
> If you are using the minimalist Europa power system, then in general, your
> surmise is correct. The battery supplies power to the "grid" when the
> alternator produces less than the charging voltage (say 12V for the sake of
> simplicity). When the alternator generates its full voltage or
> approximately
> 13.6V, it pushes energy back into the battery and is the source of buss
> power.
>
> That being said, I have seen a few very crazy things done in OBAM aircraft.
> Also, I dare say no one outside the UK uses the exact design provided by
> Europa. My own power system uses a "carefully" considered modification of
> Bob Nuckolls' designs. The advantage of going beyond the minimalist
> design includes mainly removal of critical single point failure nodes and
> the inclusion of secondary sources (I have a second alternator and battery
> for
> the EFIS as I used to do IFR ops).
>
> I have also recently seen crazy things done to other engine systems. A
> local elderly gent with a kitfox installed a shutoff valve in his oil
> reservoir return
> line deep inside his cowl to prevent sumping after shutdown. Of course, he
> eventually forgot to reach in and turn it back on at some point and
> completely
> bricked his 912s.
>
> This is why I ask for design as built when people ask for troubleshooting
> help.
>
> --------
> Ira N224XS
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=460424#460424
>
>
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