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Europa-List Digest: 9 Msgs - 08/10/07

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Fergus Kyle

Joined: 03 Jun 2007
Posts: 291
Location: Burlington ON Canada

Posted: Sat Aug 11, 2007 5:56 am Post subject: Europa-List Digest: 9 Msgs - 08/10/07

Raimo,  

''Time: 10:41:45 AM PST US  

 From: "Raimo Toivio" <raimo.toivio(at)rwm.fi>  

 Subject: Re: BATTERY MASTER SWITCH   

 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.  

I`m interested to know where you got the mechanical switch and   

what amperes it will switch….  

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.   

That sounds ideal, too… thanks for the address  

 - 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  

I`m keen to add about 15 amps for Amateur radio equipment, so  

the 40A looks good as well. Perhaps I can find something like that  

here. I have to keep some current for 2 fuel pumps for the 914 which complicates it a bit. I am installing a MiniMac computor to run my   

software for Nav and position reporting. The position reports are  

routed to my home computor so I have a flight log waiting when I come  

home, plus wherever it stops enroute is where Search & Rescue look  

for my crash……….  

Cheers again!  

Ferg  

 ---

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raimo.toivio(at)rwm.fi
Guest

Posted: Mon Aug 13, 2007 1:32 am Post subject: Europa-List Digest: 9 Msgs - 08/10/07

,I`m interested to know where you got the mechanical switch  and 

 [quote]   

what amperes    it will switch….   

, > Ferg   

Try any automotive spare part    shop like   

http://www.adita.fi/default.asp?file=101   

I Think I hae a modell    1000-0040.   

For example rally cars use it    for emergency use.   

After crash rescue service can    switch off all the power.   

Mechanical switch is installed    outside the car body in that case.   

Why not in planes also (I have    not)?   

Amperes; you can be sure it    handles "enough" . I have similar   

type switch in my speed boat    and no problem to start V8 454 cin.   

If you have two accus you can    have two channel model - so you   

are able to use accu #1 or    accu #2 or both of them together.   

You use the switch by    removable "key", which is usually red.   

If the key is in your pocket,    it is difficult to start the engine   

- that is also extra    safety.   

Regards,    Raimo[b]

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