REFLECTOR: DYNON AHARS location again

[Hiroo Umeno]

Mine is pretty tall and could not place it offset on the Canard.  The only way it would fit was fairly centered and that made it pretty close to the trim motor.  My AHRS is FOG based and therefore fairly tall.  I noticed that many of the modern MEMs AHRS / (G)ADHARS units are fairly small and will give you more flexibility.

When I get a chance, I am going to "hack" one of the newer units to talk the older language for placement flexibility.  One of many "when I get a chance" projects.

Hiroo

From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of Michael Watson
Sent: Wednesday, June 29, 2011 9:10 AM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: DYNON AHARS location again

I have my GRT AHRS on top of the left side of the canard away from the trim actuator.
I have not encountered any problems in five years.

On Tue, Jun 28, 2011 at 12:27 PM, Hiroo Umeno <humeno at microsoft.com<mailto:humeno at microsoft.com>> wrote:
Not a Dynon but I initially placed my Sierra/Chelton/Corban AHRS between the two back seats on my SUV.  The back seats are on glass base (non-adjustable).  I noticed heading drift based on engine RPM at that location so I had to move it away.  I also had problems in the nose based on current draw due to proximity to battery.

I currently have it in the strake baggage area, a location I am not entirely happy with.

Hiroo

From: reflector-bounces at tvbf.org<mailto:reflector-bounces at tvbf.org> [mailto:reflector-bounces at tvbf.org<mailto:reflector-bounces at tvbf.org>] On Behalf Of Alex Balic
Sent: Tuesday, June 28, 2011 7:35 AM
To: 'Velocity Aircraft Owners and Builders list'
Subject: REFLECTOR: DYNON AHARS location again

Getting back to the recent discussion about Dynon AHARS placement- there was a suggestion to put it under the rear seat- I like this location because it is generally away from everything electrical except my AP servo (about  20")  but that has twisted pairs, so might be OK- anyway- did the person who located it under the rear seats have the metal seat tracks, or was it with the built up rear FG deck? I didn't notice any particular magnetic issues in my area, although I have the floor mounted metal tracks so the seats can be adjusted or removed, - didn't want to have the sensor located out of reach inside the strake where I would have to remove the wing to get to it.  Any suggestions?

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--
Mike W.
1997 Velocity Elite RG
Franklin /IVO Electric CS
Dual GRT EFIS HX Synthetic Vision
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