Thread: Master Switch
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Old October 24th 13, 10:17 PM posted to rec.aviation.soaring
John Strzebrakowski
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Posts: 3
Default Master Switch

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
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