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Dynon EFIS installation questons

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Mozam

Joined: 24 Nov 2006
Posts: 85

Posted: Fri Nov 21, 2008 1:33 pm Post subject: Dynon EFIS installation questons

Guys/gals,



I am installing a Dynon D10A EFIS in my Yak.  I know many of you have already done this, so may I ask for some help with the following:



-where did you put the remote compass?



-if you put it in the tail, how did you route the wiring from the cockpit area back thru the fuselage all the way to the tail?



-where did you put the OAT sensor?



-any other advice?



THANKS,

Steve Dalton

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mark.bitterlich(at)navy.m
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Posted: Mon Nov 24, 2008 8:56 am Post subject: Dynon EFIS installation questons

I have installed one in a YAK-50 Steve, but not in my aircraft.  Plan to

though, great unit.  I think Tom Johnson and Doc did as well.  



ANYWAY....With any flux valve, it is smart to locate it as far away from

the engine as possible.  Hard iron causes what is called single cycle

errors.  Further, anything that produces a magnetic field, such as a

generator, or even wire with electricity flowing through it produces

what is called "two cycle errors".  Without boring you to death on the

details, the bottom line is that the further you put the "remote

compass" (which is in reality a flux valve) away from the above

described "bad things" the more accurate that little sucker is going to

be, and the easier job it will have of "self-nulling" these errors when

you perform the self-calibrate function.  



If you pull the two fiberglass gap sealers at the fuselage side of the

horizontal stab, you can see a gap up high where the vertical stab

attaches.  There is an area in there it will fit in.  Aluminum is no

problem in this regard and although I would not want to put it in a

aluminum BOX for heavens sake, having some aluminum structure around is

no issue.  You want to keep any steel screws away from it though if you

can.  Use brass or even stainless steel for screws if you have to use

them.  Of course, I am going a tad over-board here.  In the aircraft I

am used to swinging, you can't have more than a degree of error before

it fails... But still, it never hurts to try and do it as best as

possible.  



For the wiring, I made 90 degree L brackets, with an anchor nut riveted

on, then an ADEL clamp and then rivets that whole mess to the aircraft.

That was a lot of work.  I am sure someone else might have a better way

than that. 



Mark Bitterlich 

N50YK

 



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Mozam

Joined: 24 Nov 2006
Posts: 85

Posted: Mon Nov 24, 2008 10:27 am Post subject: Re: Dynon EFIS installation questons

Thanks Mark,



I think I'm going to mount the remote compass onto the factory built aluminum mounting bracket behind the backseater's head that Aerostar used to attach the ELT when they built the plane.  The ELT has since been moved to below the baggage compartment and this leftover mounting bracket is perfect (level, STRONG and nothing magnetic around it).  A couple rivets and it's done!



Also saves me from trying to fish the wire thru the aft fuselage and keep it away from the control cables.  My big ass won't fit thru the baggage door to get in there to secure the wire!



Next question is the OAT probe.  A couple guys have put it on top of the fuselage behind the canopy.  My concern was the sun heating it up, but I'm told this location worked fine.  Thoughts?



Thanks again

Steve

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mark.bitterlich(at)navy.m
Guest

Posted: Mon Nov 24, 2008 11:18 am Post subject: Dynon EFIS installation questons

Steve, I am hopefully confident that the location mentioned will work

just fine for you!  These modern automatically compensated flux valves

are indeed amazing pieces of technology and will tolerate more than can

be imagined.  However, mounting them down inside an actual instrument

panel is asking a lot, hence the remote flux valve they offer.  I have

never done a 52, so I was not aware of your stated location for it.  It

does really sound ideal!  Rog on being big.  Same here.  I had to hire a

very small person, yank the seat, and give him a big shove.  



I did not do the OAT probe Steve, sorry.  As for the sun heating it up,

I have seen that happen myself on our EA-6B OAT probes, when sitting on

the deck... But once in the air, they all read perfectly.  I doubt you

will have any problems, but my experience is limited in this regard to

military aircraft and not the YAK.  



Mark

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ReadeG(at)Cairnwood.com
Guest

Posted: Mon Nov 24, 2008 11:33 am Post subject: Dynon EFIS installation questons

Steve:



How about in one of the wheel wells?  This location has worked well in

the IAR 823.



Reade Genzlinger

Cairnwood Cooperative Corporation

mailto:readeg(at)cairnwood.com

215.914.0370

Next question is the OAT probe.  A couple guys have put it on top of the

fuselage behind the canopy.  My concern was the sun heating it up, but

I'm told this location worked fine.  Thoughts?

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Yak52w(at)aol.com
Guest

Posted: Mon Nov 24, 2008 5:36 pm Post subject: Dynon EFIS installation questons

I think the OAT probe actually plugs into the remote compass so you should  consider putting it near there.

  

  In a message dated 11/24/2008 2:34:25 P.M. Eastern Standard Time,  ReadeG(at)Cairnwood.com writes:

  	  Quote: 	
		  -->    Yak-List message posted by: "Genzlinger, Reade"    <ReadeG(at)Cairnwood.com>



Steve:



How about in one of the    wheel wells?  This location has worked well in

the IAR    823.



Reade Genzlinger

Cairnwood Cooperative    Corporation

mailto:readeg(at)cairnwood.com

215.914.0370

Next    question is the OAT probe.  A couple guys have put it on top of    the

fuselage behind the canopy.  My concern was the sun heating it up,    but

I'm told this location worked fine.   nbsp;  sp;             (And Get Some AWESOME FREE   find  you for                          -Matt Dralle,    List  es  y                 - MATRONICS WEB FORUMS  =========================



	




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