Master Switch

I'm just re-wiring my panel for a Silent2 Targa self-launcher. I wanted to
simplify the switching and I did not trust the two miniature switches that
were used and which were connected (without any fuse - I will now add one)
to a very powerful engine battery! I have selected a larger high quality
OTTO switch for the master, and I have used latching switches (anti-fumble)
for the Power Flarm brick and for AUX power for a PDA etc. A relay will
automatically connect the solar panel controller when the Flarm is switched
on, so that it will not latch on provided that you switch the Flarm off
before the master. Note that the Vario and radio will be switched off
internally when power is lost. If I see a voltage on the voltmeter then I
will know that the solar panel is still connected to the panel, but of
course it would not stay latched on when the glider is in the trailer.

Schematic here if anyone is interested:
http://ubuntuone.com/162WfU0vGsXXzw2YpKGGif

Thanks Kirk,

The panel on my LAK is incredibly small and I'm pulling out my hair trying
to figure out where to cram terminal strips.

"kirk.stant" wrote in message
...
On Thursday, October 17, 2013 9:10:25 AM UTC-5, Dan Marotta wrote:

Or I could simply divide my equipment across two (or three) busses and
then

rely on the load division to allow the batteries to last an entire
flight.

Dan, that's how I've had my LS6 setup for over 13 years and it has worked
just fine so far.

2 separate busses, one for each battery, with load divided as equally and
logically as possible (split varios and loggers, for example).

In addition, the master switch for each buss can also select either
battery, so if one battery fails (forgot to charge it?) the essential
instruments can be powered by the remaining battery.

Probably WAY over-engineered, but it was fun to wire up and has worked as
designed so far (ugly to look at, though - bit of a spaghetti factory
behind that small LS6 panel that I want to clean up some day...).

Kirk
66

I have just rewired my Lak19T and have shared your frustration with the
small panel. I have Butterfly vario, Butterfly dispaly for powerflarm,
ClearNav vario and display (remotely mounted, Oudie (remotely mounted) ASI,
T/S, Radio and Altimeter all packed in running off two extra batteries
mounted 'in' the wheelbox. The standard batteries and mountings supply the
engine management.
For the instruments two terminal strips are mounted at the side of my knees
in the sloping part of the panel and the common earth sits on the floor of
the panel behing the ASI.
There are two way switches and fuses for each instrument. A master switch
each for engine and instrument circuits.
Have fun i did. i am sending a photo of the panel but photo of the rear of
the panel or a circuit diagram will take a little longer.
Oh i forgot there is panel space for a transponder display but sadly not a
main unit but i think this might be able to go on the cockpit floor behind
the panel unit if i eventually fit one.
Strzeb

At 01:01 24 October 2013, Dan Marotta wrote:
Thanks Kirk,

The panel on my LAK is incredibly small and I'm pulling out my hair trying

to figure out where to cram terminal strips.

"kirk.stant" wrote in message
...
On Thursday, October 17, 2013 9:10:25 AM UTC-5, Dan Marotta wrote:

Or I could simply divide my equipment across two (or three) busses and

then

rely on the load division to allow the batteries to last an entire
flight.

Dan, that's how I've had my LS6 setup for over 13 years and it has
worked
just fine so far.

2 separate busses, one for each battery, with load divided as equally
and

logically as possible (split varios and loggers, for example).

In addition, the master switch for each buss can also select either
battery, so if one battery fails (forgot to charge it?) the essential
instruments can be powered by the remaining battery.

Probably WAY over-engineered, but it was fun to wire up and has worked
as

designed so far (ugly to look at, though - bit of a spaghetti factory
behind that small LS6 panel that I want to clean up some day...).

Kirk
66