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Dynon D100 : Where to mount compass unit

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K Dilks

Joined: 22 Sep 2008
Posts: 108
Location: UK

Posted: Wed Sep 08, 2010 6:22 am Post subject: Dynon D100 : Where to mount compass unit

Hi all 

Well I am up to doing the electrical stuff and was wondering were folks are putting the compass unit that comes with the D100. 

 I was hoping to put it up behind the D100 but looks like there may be some power cables near enough to upset it.



Any pictures would also be  appreciated



Thanks

Kevin

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tigerrick(at)mindspring.c
Guest

Posted: Wed Sep 08, 2010 6:55 am Post subject: Dynon D100 : Where to mount compass unit

Hey, Kev.



I had to move the magnetometer on my Blue Mountain installation three times before I found a location that wasn't affected by random magnetic fields from ferrous airframe components. Even the control cables (steel) caused a reverse sensing between east and west! But north and south were OK, go figure!



I finally ended up going down the tail cone, and mounting the unit with plastic screws to the top of fuselage from the inside, about 2 feet forward of the rudder. Works OK there.



Rick



N42KP, Upgrade Close to DONE! Yay!!

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psm(at)att.net
Guest

Posted: Wed Sep 08, 2010 6:57 am Post subject: Dynon D100 : Where to mount compass unit

Hi Kevin,



I put mine on the fuselage floor under the baggage compartment.



A photo is attached . . .



Paul

XL upgrading second wing



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DaveG601XL

Joined: 27 Oct 2006
Posts: 351
Location: Cincinnati, Oh

Posted: Wed Sep 08, 2010 7:44 am Post subject: Re: Dynon D100 : Where to mount compass unit

Kevin,



My remote compass is mounted in about the same place as Paul's.  I placed it behind the access hatch, but I also made made a mounting bracket to level the unit.  The Dynon instructions say to mount the compass within 1 degree of the panel mounted unit, a D180 in my case, in pitch, roll and yaw.  Since the fuselage slopes upward towards the tail, my bracket counters that slope.  Picture attached.



This has worked very well for me in the 2+ years I have been flying.



Good luck,

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David Gallagher
Cincinnati, OH area

chris Sinfield

Joined: 28 Nov 2006
Posts: 270
Location: Sydney Australia

Posted: Thu Sep 09, 2010 2:22 am Post subject: Re: Dynon D100 : Where to mount compass unit

Well I thought it came internally with the D100?

so you have to set up a remote compass for the D100? 

another thing to write down

Chris..

psm(at)att.net
Guest

Posted: Thu Sep 09, 2010 2:40 am Post subject: Dynon D100 : Where to mount compass unit

Hi Chris,



Yes, you need to mount the remote magnetic sensor and run a cable to it.



The Dynon unit comes with extensive instructions which talk all about this

and other installation issues.



Good luck,



Paul

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sonar1@cox.net

Joined: 02 Oct 2007
Posts: 55
Location: Santa Barbara, Ca

Posted: Thu Sep 09, 2010 8:21 am Post subject: Re: Dynon D100 : Where to mount compass unit

I mounted mine on the floor as far back as I could reach, and only ran a hot lead to the aft nav light, grounding the ground lead at the tail. The wires were high up on the side of the fuselage, but still affected the compass.



Discovered that when I turned on the nav lights  the compass swung 10 degrees. Had to run both a hot and a ground twisted pair to the tail nav light.....Fred

AZFlyer

Joined: 11 Jan 2006
Posts: 89
Location: Prescott, AZ

Posted: Sat Sep 11, 2010 3:14 pm Post subject: Re: Dynon D100 : Where to mount compass unit

Kevin,



from the FWIW column...



Here's a pic of my solution.  Not difficult if you have the trap door in.

They tell me this unit must be pretty close level with longerons and side to side.   



Mike

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Mike Miller @ millrml@aol.com
601 XL-B, 3300, Dynon

Remember, "the second mouse gets the cheese"!

chris Sinfield

Joined: 28 Nov 2006
Posts: 270
Location: Sydney Australia

Posted: Fri Oct 28, 2011 10:03 pm Post subject: Re: Dynon D100 : Where to mount compass unit

guys and girls

when you mounted the Compass unit down the back, where did you run the cable from the Dynon 100? 

I was thinking down the LH side above the vertical uprights ,although that is also where my flap motor and trim wires are. 



Would moving the flaps or trims electrically cause an issue to the heading in that location ?

Chris

psm(at)att.net
Guest

Posted: Sat Oct 29, 2011 1:36 am Post subject: Dynon D100 : Where to mount compass unit

Hi Chris,



That seems to work fine for me.  The cable to the magnetic sensor is a 

computer style digital connection with good shielding.  I think there is 

a small processor in the magnetic unit.  I have not seen any strange 

behavior on mine, and the wires are all bundled together going to the 

rear of the cockpit.



Paul

XL 20 hours into flight testing.



On 10/28/2011 11:03 PM, chris Sinfield wrote:

 	  Quote: 	
		   



 guys and girls

 when you mounted the Compass unit down the back, where did you run the cable from the Dynon 100?

 I was thinking down the LH side above the vertical uprights ,although that is also where my flap motor and trim wires are.



 Would moving the flaps or trims electrically cause an issue to the heading in that location ?

 Chris





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=356247#356247

aprazer

Joined: 24 Nov 2006
Posts: 93
Location: Boise, Idaho

Posted: Sun Oct 30, 2011 7:36 am Post subject: Re: Dynon D100 : Where to mount compass unit

Greetings,

Why weren't you guys around when I was looking for a OAT location? I like the vent idea!

Mine is under the stabilizer - also out of the direct sun light.

Mack

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The poh-oh-unemployed farm boy from Idaho

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