Dear Ferg
here is my solution.
I divided the electrical consumption in two as follows:
1) starter, trimming devices, stall warning, gear warning,
door warnings, clock, Dynon back-upp charger, burglary-alarm etc.
This is handled by full mechanic main-swithch
which is installed over the glove shelf (it does not
prevent removing the panel, it is light weight, cheap
and solid and it is operated w/o el pwr).
The switch is about similar somebody has installed
to the co-pilots head rest in the case his accu is in the back.
Price was about 15 euros.
2) all the rest is handled by small automotive type relay
http://www.biztee.com/Products/2649.html
using about 30 mA. It handles 40A which is enough for me.
I use it by "master switch" in my panels left side.
Price was about 5 euros.
- normally # 1 is always open and # 2 is closed
(trim CB must open also separately!).
- when flying both are closed (ON) of course.
- in the case of emergency landing I open # 2 and
leave # 1 closed - so I am still able to start, use trim
and have all the warnings I am used to (and clock is in time!)
- during long (more than two weeks) staying period I open (OFF) both
This was simple, cheap, lightweight, prctical and safe solution for my purposes.
Wishes, Raimo
----- Original Message -----
From: "Fergus Kyle" <VE3LVO@rac.ca>
Sent: Monday, August 06, 2007 5:43 PM
Subject: Europa-List: BATTERY MASTER SWITCH
>
> Cheers,
> I'm still searching for that elusive device - in an attempt to avoid
> the cost of an ampere or two of contactor current - which will control a
> primary battery source and another for secondary battery source.
> I have found several which meet one criterion or another, but not
> all:
> [a] should carry as much current as a contactor for that job;
> [b] needs to be an up-down rather than rotary type switch;
> [c] should be on a remote(able) stalk so I can undo the connection to
> remove the instrument panel ;
> [d] cost less than the usual contactor - or at least be competitive.
> I have devised a system to isolate the controls from wandering
> fingers so am not fussy about security. I'm not sure what a "Kill switch" is
> really.
> Any help would be most appreciated.
> Ferg
> Classic 914 CS prop mono
> PS: My server is down for the last 2 days, so my thanks will be
> delayed.........
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