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Dynon AHRS Location

jamcgee1978

Active Member
Afternoon all,

As the emp is rapidly coming to the end and the wings are on order i had intentionally left rivets out on the forward bottom skin to accept the Vans supplied AHRS Mount, however i can see that it states it is only for the Garmin/G Rapids units. Where have most installed Dynon AHRS in the -10?s? Top of the bulkhead seems to be the favourable choice by builders.

Thanks
James
 
Justin T

I used Justin T's plans. He gives you a nice to-scale design you can print out and use as a template.

I left a few rivets out so that I could get the angle perfect once the tailcone is mated to the fuse.
 
This is what I did. Note the use of copper wires instead of steal pins for the hinges.

Carl
ADHARS_4.jpg

DSC01268.jpg

ADHARS_1.jpg

ADHARS_2.jpg
 
Similar location, but a bit lower since I plan on a Comm VHF antenna on the top skin.

Brass mounting screws with the intention of adding washers if I need to shim and fine tune the level of the AHRS.

oEB.jpg


In process so I know things are not tightened or connected yet. :)
 
Copper hinge pins?

No weight advantage. Certainly a greater than zero dissimilar metal voltage potential (too lazy to look it up.)

I get that steel pins would risk magnetic interference, but wouldn't stock aluminum pins serve?

The drop-down tray is beautifully executed, but looks like overkill for modules you don't normally need to get at but once during the life of the airframe. :confused:
 
No weight advantage. Certainly a greater than zero dissimilar metal voltage potential (too lazy to look it up.)

I get that steel pins would risk magnetic interference, but wouldn't stock aluminum pins serve?

The drop-down tray is beautifully executed, but looks like overkill for modules you don't normally need to get at but once during the life of the airframe. :confused:

Just a data point......

After five years of flying, I've had to go back there two times.

1. Replaced a failed Crossbow ADHRS. For some reason, I used slotted brass screws on the original install. It became very apparent why that wasn't a good choice when I tried to remove them.

2. When I upgraded my EFIS to AFS 5500, I also upgraded to the Dynon SV-ADAHARs.

I did build a tray similar to what others have described. Except that my tray was too close to the bulkhead to accommodate the hoods for the db-15 connectors. I had to relocate the tray forward a bit.
 
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