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AHRS and Magnetometer location on the 10

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Strasnuts

Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT

Posted: Sat Mar 20, 2010 4:41 pm Post subject: AHRS and Magnetometer location on the 10

I don't get it.  I read the G3x installation manual and noticed the bracket they use to mount the magnetometer goes on the aft deck in front of the horizontal.  Later it suggest to keep it at least 10 feet from any motor or servo.  The elevator trim servo is right under the aft deck so I don't get it.  Would it be better in the wing opposite the one with the aileron servo?

It is a GMU 44.  I plan on mounting the AHRS over the battery up high but again the manual suggests to mount it no more than 6.5 feet from the cg.

_________________
40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours

speckter(at)comcast.net
Guest

Posted: Sun Mar 21, 2010 3:51 am Post subject: AHRS and Magnetometer location on the 10

I know there is a conflict between the instructions and the distances

required, but I followed the recommended location directions and it works

fine.  Van's has a mount for the AHRS that goes right beside the battery.



Gary Specketer



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Strasnuts

Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT

Posted: Sun Mar 21, 2010 6:12 am Post subject: Re: AHRS and Magnetometer location on the 10

I may do the same with the AHRS.  Does anyone know if the Van's mount works with the GSU 73 too?  I'm sure it can be adapted.  I'm still wondering about the magnetometer.  AFT deck in front of horizontal or wingtip.

_________________
40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours

speckter(at)comcast.net
Guest

Posted: Sun Mar 21, 2010 7:22 am Post subject: AHRS and Magnetometer location on the 10

The aft deck is easiest IMHO and it works just fine, even with the trim

right below it.



Gary Specketer



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Strasnuts

Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT

Posted: Sun Mar 21, 2010 8:41 am Post subject: Re: AHRS and Magnetometer location on the 10

OK thanks Gary,  

I assume the G900 has the same components or close to the GMU44 and GSU73.

_________________
40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours

greghale

Joined: 10 Jan 2007
Posts: 91
Location: Tulsa, Oklahoma

Posted: Sun Mar 21, 2010 11:19 am Post subject: Re: AHRS and Magnetometer location on the 10

I mounted my Chelton Magnetometer in the wing tip.  When I got ready to install the backup Dynon, I thought of installing it on the aft deck in front of the horizontal.  When I placed a compass to check if this was OK, the compass was 180 degrees off.  I guess this was due to all the bolts and screws used in that area.  Also that locations could get wet from rain or washing the aircraft.  I eventually installed the Dynon's in the other wing tip.  The Gadahrs is mounted on the centerline of the aircraft.



Greg...

_________________
Greg Hale rv10 -- N210KH
www.nwacaptain.com

Bob Turner

Joined: 03 Jan 2009
Posts: 885
Location: Castro Valley, CA

Posted: Sun Mar 21, 2010 11:22 am Post subject: Re: AHRS and Magnetometer location on the 10

my trim motor moves a compass when within a foot or so.

_________________
Bob Turner
RV-10 QB

speckter(at)comcast.net
Guest

Posted: Sun Mar 21, 2010 1:17 pm Post subject: AHRS and Magnetometer location on the 10

I do have the GMU44 but the AHRS is a GRS77.



Gary Specketer



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jump2(at)sbcglobal.net
Guest

Posted: Tue Mar 23, 2010 3:41 am Post subject: AHRS and Magnetometer location on the 10

I removed the op tech equipt and put in a G500 and and here is where I put the GMU44. The one problem that showed up on calibrating was the strobe power pack and what I did was to the ground straight to the battery. That cleared the red flag. The AHRS went on vans mount, pilot side of auto pilot servor. It was made for it.

Patrick Thyssen



--- On Sun, 3/21/10, gary <speckter(at)comcast.net> wrote:

[quote]

From: gary <speckter(at)comcast.net>

Subject: RE: Re: AHRS and Magnetometer location on the 10

To: rv10-list(at)matronics.com

Date: Sunday, March 21, 2010, 4:14 PM



--> RV10-List message posted by: "gary" <[url=/mc/compose?to=speckter(at)comcast.net]speckter(at)comcast.net[/url]>



I do have the GMU44 but the AHRS is a GRS77.



Gary Specketer



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Strasnuts

Joined: 10 Feb 2009
Posts: 502
Location: Salt Lake City, UT

Posted: Tue Mar 23, 2010 7:41 am Post subject: Re: AHRS and Magnetometer location on the 10

Thanks Patrick,

The photos really help.  I think that will be the location unless I find an easy spot in the wing.

_________________
40936
RV-10 SB N801VR Flying
780 Hours
SuperSTOL 60 hours

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