Re: AV30

Mike Dwyer

Hi Jim,
I ran an early Dynon D10 EFIS for many years.  It had an internal magnetometer and of course, Gyros.  No GPS attached to it.
The heading never precessed a bit.    I wonder if the uAvionix is even using the internal magnetometer to update the heading at all.
( Almost done with a Dynon Skyview install into a Velocity now).
Mike Dwyer

Q200 Website:

On Fri, Dec 2, 2022 at 12:26 PM hgflier via <> wrote:
Isn't the precession problem inherent in any gyro-based compass/DG? 
... though I suspect some gyros have less precession than others. 
Isn't installing an external magnetometer the right solution? 
Geoff N82GK 

On Saturday, November 26, 2022 at 08:28:09 AM PST, Jim Patillo <logistics_engineering@...> wrote:

Good morning all,

I recently installed two Uavonix AV30’s in my plane and removed all the vacuum stuff. That all worked great and I really like not having vacuum. Each unit is a full blown AHARS.   Having said that, the DG unit cannot hold a heading worth a crap and precesses within 10-15 minutes to where it has to be reset with the compass. I’ve tried calibrating it but no joy for better performance. I can buy an external magnometer to solve this but would rather not. My question is, has anyone else seen this problem and how did you solve it. 

BTW, I hope to pass 2000 hours on my plane this year. It’s been a blast. Keep building only if it’s a little every day. There is actually an end believe it or not, and you will be greatly rewarded! 

N46JP - Q200

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