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08-11-2014, 09:03 AM
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Join Date: Dec 2012
Location: LAGRANGE GA
Posts: 40
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Dynon D10 A compass calibration
My RV 6 has a D10A with the remote compass. This was all installed before I purchased the plane. I noticed the heading is way off from the mag compass. Like 40 degrees. Is there an easy way to realign the heading. I read the Dynon installation manual. Maybe the compass rose method?
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08-11-2014, 11:26 AM
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Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
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Britt, my D-100 was also waaay off when I bought the airplane and gave crazy winds aloft reports as a result.
I flew over to Sandersville where they have a surveyed compass rose and it only took four headings, specified in the manual, with all my radios and transponder running. Voilaaaa..success and now very accurate headings and winds aloft.
If you're not near an accurate compass rose, find a forester. They usually have very accurate hand held compasses.
Best,
__________________
Pierre Smith
RV-10, 510 TT
RV6A (Sojourner) 180 HP, Catto 3 Bl (502Hrs), gone...and already missed
Air Tractor AT 502B PT 6-15 Sold
Air Tractor 402 PT-6-20 Sold
EAA Flight Advisor/CFI/Tech Counselor
Louisville, Ga
It's never skill or craftsmanship that completes airplanes, it's the will to do so,
Patrick Kenny, EAA 275132
Dues gladly paid!
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08-11-2014, 11:32 AM
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Join Date: May 2006
Posts: 532
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I recently installed a D10A in my -4 and calibrated the remote compass with the panel mounted compass using the process Pierre refers to in his post. I plan use my home airport's compass rose to get even better values, but have been too busy flying...
Good luck
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08-11-2014, 11:50 AM
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Join Date: Jul 2009
Location: Mojave
Posts: 4,643
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I just calibrated mine using my Iphone as a compas rose. The GPS track during taxi verified it to be dead on.
__________________
WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.
Michael Robinson
______________
Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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08-11-2014, 12:34 PM
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Join Date: Dec 2012
Location: LAGRANGE GA
Posts: 40
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Dynon d10a compass
Thanks for the replies. Yes my wind aloft are crazy also. What is the identifier for Sandersville?
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08-11-2014, 01:16 PM
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Join Date: Jun 2006
Location: San Jose, CA
Posts: 1,125
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If you have a slider, do the cal with the canopy closed. Some canopies, like mine, have quite a charge on them. Ask me how I know.
__________________
Kelly Johnson
San Jose, CA
RV-9A
Pink slip issued: 5/7/12
First flight: 5/28/12, Memorial Day.
Phase I Complete: 8/18/12!
2020 donation: complete
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08-11-2014, 01:27 PM
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Join Date: Jan 2005
Location: Louisville, Ga
Posts: 7,840
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Quote:
Originally Posted by britt fincher
Thanks for the replies. Yes my wind aloft are crazy also. What is the identifier for Sandersville?
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KOKZ...Ray Lawrence has his RV builder assist facility there as well.
Best,
__________________
Pierre Smith
RV-10, 510 TT
RV6A (Sojourner) 180 HP, Catto 3 Bl (502Hrs), gone...and already missed
Air Tractor AT 502B PT 6-15 Sold
Air Tractor 402 PT-6-20 Sold
EAA Flight Advisor/CFI/Tech Counselor
Louisville, Ga
It's never skill or craftsmanship that completes airplanes, it's the will to do so,
Patrick Kenny, EAA 275132
Dues gladly paid!
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08-11-2014, 02:39 PM
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Join Date: Dec 2012
Location: LAGRANGE GA
Posts: 40
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Dynon d10 a compass
I assume the calibration is done with engine running?
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08-11-2014, 02:48 PM
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Join Date: May 2006
Posts: 532
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I did not perfrom the calibration sequence with the engine running, but the manual instructs you to do so. I plan to re-do mine with the engine running. After a few months of flying with the D10A, I find the remote compass agrees quite well with the GPS-generated compass rose on my moving map, but not very well with panel mounted compass. I suspect the panel-mounted compass is the offender, but won't know that for certain until I repeat the test using the compass rose at my airport.
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08-11-2014, 03:56 PM
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Join Date: Jul 2009
Location: Mojave
Posts: 4,643
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A quick taxi in a straight line will give you a GPS track... Unless the wheels are crooked, your track and heading will be the same. Your compass should therefore agree with the track display.
__________________
WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.
Michael Robinson
______________
Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
Last edited by Toobuilder : 08-11-2014 at 05:22 PM.
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