Where to mount the ADHRS unit

[dakdriver]

Getting ready to upgrade my RV6 with SKVIEW 1100
Any suggestions on the best place to mount the AHHRS unit. and how.

Thnks

 

[John Bright]

If you google "vansaircraft op-60" you'll see the Van's mount for newer RVs where the ADAHRS is under the turtledeck in front of the first bulkhead behind the baggage bulkhead. This location appears to be rigid and keeps it away from the pitch servo and the shoulder harness cables.

Keep in mind the Dynon install manual says "Must be mounted within one degree of parallel to all three aircraft axes."

There are a number of threads on VAF... link... link... link.

FYI Dynon makes a plate for stacking dual ADAHRS... google "Dynon Dual ADAHRS Mounting Kit".

 

[Raymo]

Here's how I did it in my RV-7A. I also purchased the Dynon plate to stack the backup on top of the primary (not in photo).

 

[Stevec]

Hi my ADHRS is mounted a little further forward on my RV6. The original builder had used 3/4 x 3/4 angle and when I taxied on grass I found I had ADHRS vibration errors. I upgraded the cross struts to 32mm x 25mm x 1.5mm with the long side vertical. I also tied the two struts together to increase the rigidity. The problem has now gone away. The advantage of putting the cross struts about a foot behind the bulkhead is easier access otherwise you need to be a contortionist to get the ADHRS. I have also mounted my ADSB-472 and altitude encoder on the cross struts. Another advantage is the top longeron is the leveling point of the aircraft so you don’t have to worry about adjusting the mounting.
Steve

 

[dakdriver]

If you google "vansaircraft op-60" you'll see the Van's mount for newer RVs where the ADAHRS is under the turtledeck in front of the first bulkhead behind the baggage bulkhead. This location appears to be rigid and keeps it away from the pitch servo and the shoulder harness cables.

Keep in mind the Dynon install manual says "Must be mounted within one degree of parallel to all three aircraft axes."

There are a number of threads on VAF... link... link... link.

FYI Dynon makes a plate for stacking dual ADAHRS... google "Dynon Dual ADAHRS Mounting Kit".

Thanks for this I can see the advantages of building a shelf across the top longeron Thanks again I will sleep well again tonight

 

[andresmith76]

I made a small shelf in the back of my RV-6 and mounted the ADAHRS and ADS-B receiver on top (see pictures) as I wanted to keep the coax run from the antenna to the ADS-B receiver short (minimal signal loss).
The 3rd picture shows the routing of my static lines. I attended an EAA webinar hosted by Vic Syracuse and he had the great recommendation of routing the static lines upward after 1st entering the fuselage before connecting to the ADAHRS, minimizing the chance of any rain/water getting into and trapped in the line.

 

[Brent Dana]

we had a 1 hour discussion, about designing a system, on the dynon channel on youtube, good to watch. Very informative, went thru each piece of equipment. Maybe title is sun n fun, just when these stupid lockdowns came. Back of a bonanza during install.

 

[Brent Dana]

I made a small shelf in the back of my RV-6 and mounted the ADAHRS and ADS-B receiver on top (see pictures) as I wanted to keep the coax run from the antenna to the ADS-B antenna short (minimal signal loss).
The 3rd picture show the routing of my static lines. While attending an on-line EAA webinar hosted by Vic Syracuse, he had the great recommendation of routing the static lines upward after 1st entering the fuselage before connecting to the ADAHRS, minimizing the chance of any rain/water getting into and trapped into the line.

Excellent job

 

[John Bright]

I made a small shelf in the back of my RV-6 and mounted the ADAHRS and ADS-B receiver on top (see pictures)...

You have a number of items close to the ADAHRS. Dynon told me the ADAHRS should be 18" from the AP servo unless a remote compass is used.

 

[andresmith76]

John - I am using the remote magnetometer. It is located and mounted in the tail section (see attached pictures) away from anything electrical. What the pictures do not show is the outside air temperature sensor, mounted just below the horizontal stabilizer and connected to the magnetometer.

Andre'

 

[Raymo]

John - I am using the remote magnetometer. It is located and mounted in the tail section (see attached pictures) away from anything electrical. What the pictures do not show is the outside air temperature sensor, mounted just below the horizontal stabilizer and connected to the magnetometer.

Andre'

Lots of folks mount the AD-AHRS there too. Is there a reason you did not?

 

[andresmith76]

Raymo - The plane's original builder installed a Dynon D100 in the panel and the EDC-D10A magnetometer in the tail section. When I removed and replaced the EDC with the Skyview magnetometer, I never gave any thought regarding mounting the ADAHRS in the tail section. Besides, as mentioned earlier, I needed to build a shelf to mount the ADS-B receiver and wanted it close to the receive antenna. Mounting the ADAHRS on the same shelf seemed like a logical step, as I had no room left behind the panel.

 

[CF86301]

I made a small shelf in the back of my RV-6 and mounted the ADAHRS and ADS-B receiver on top (see pictures) as I wanted to keep the coax run from the antenna to the ADS-B receiver short (minimal signal loss).
The 3rd picture shows the routing of my static lines. I attended an EAA webinar hosted by Vic Syracuse and he had the great recommendation of routing the static lines upward after 1st entering the fuselage before connecting to the ADAHRS, minimizing the chance of any rain/water getting into and trapped in the line.

I'm curious to know if you had magnetic interference to the ADAHRS magnetometer with the pitch servo cable running right next to the ADARHS.

 

[andresmith76]

I'm curious to know if you had magnetic interference to the ADAHRS magnetometer with the pitch servo cable running right next to the ADARHS.

None that I've noticed. I took great care following the on-ground and in-flight compass calibration procedures as instructed in the Skyview System Installation guide. Note the ADAHRS unit is very well shielded inside a sturdy metal case and mounted to the metal shelf, which is attached to the aircraft skin (aircraft electrical ground). The same applies to the ADS-B receiver, mounted between the pitch servo and ADAHRS unit.

 

[Rhino]

ADAHRS is most susceptible to magnetic interference rather than anything else. A cable should have effectively zero effect on that. A servo on the other hand....

 

[andresmith76]

ADAHRS is most susceptible to magnetic interference rather than anything else. A cable should have effectively zero effect on that. A servo on the other hand....

Correct - which is why the remote magnetometer was mounted in the tail section.