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04-28-2019, 10:50 PM
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Join Date: May 2011
Location: Tylertown, MS
Posts: 186
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Question about Van's AHARS mounting kit
Has anyone had problems using Van's AHARS mounting kit? With it being so close to where the elevator auto pilot servo goes, I was wondering if the servo has caused any interference to the readings of the AHARS. Also has anyone used it with the Dynon AHARS? Does anyone have any shots of the mounting of their Dynon AHARS?
Allen
Very Slow build 7A
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04-29-2019, 05:49 AM
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Join Date: Sep 2007
Location: Central IL
Posts: 5,516
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Just a data point
Quote:
Originally Posted by fabricflyer
Has anyone had problems using Van's AHARS mounting kit? With it being so close to where the elevator auto pilot servo goes, I was wondering if the servo has caused any interference to the readings of the AHARS. Also has anyone used it with the Dynon AHARS? Does anyone have any shots of the mounting of their Dynon AHARS?
Allen
Very Slow build 7A
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I did not use the kit, but did mount it just under the top skin behind the baggage bulkhead. No adverse effects noticed in 70 hrs, but it is for a backup instrument.
__________________
Bill
RV-7
Lord Kelvin:
“I often say that when you can measure what you are speaking about,
and express it in numbers, you know something about it; but when you
cannot measure it, when you cannot express it in numbers, your knowledge
is of a meager and unsatisfactory kind.”
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04-29-2019, 08:46 AM
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Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 2,189
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I don't think anyone uses the Vans AHRS mount due to the fact that the Dynon AD-AHRS is also a mag compass and must be mounted at least 2 feet from any magnetic interference.
Here is a common and quick method of mounting and will be properly leveled to the longerons.

__________________
Ray
RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, Dual PMags, Vetterman Trombone Exh, SkyTech starter, BandC Alt (PP failed after 226 hrs)
Catto 3 blade NLE, FlightLines Interior, James cowl, plenum & intake, Anti-Splat -14 seat mod and nose gear support
All lines by TSFlightLines (aka Hoser)
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04-29-2019, 04:00 PM
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Join Date: May 2013
Location: Sherman, CT
Posts: 794
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I also used the longeron mount for my Dual Dynon Adahars mounted piggyback. No interference from slider, however I had to have stainless shoulder harness cables fabricated as they were causing interference.
__________________
Jake
RV6 #20477 completed 1991 sold.
RV7 #72018 N767T first flight 11/21/2017 350+ hrs.
IO-360M1B MT 3 blade, Dual AFS 5600 QUICK Panel.
Manual Flaps. (KOXC)Oxford, CT, (0NY0)North Creek, NY.
1941 J3 Cub skis,floats.
2020 dues gladly paid.
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04-29-2019, 05:56 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,686
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Just as an FYI, I've mounted dual Garmin AHRS back there with no issues.
Magnetometer is located separately.
__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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04-29-2019, 11:13 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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Quote:
Originally Posted by Raymo
I don't think anyone uses the Vans AHRS mount due to the fact that the Dynon AD-AHRS is also a mag compass and must be mounted at least 2 feet from any magnetic interference.
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A lot of RV's are flying with Dynon ADAHRS mounted in the upper tail cone area. (Including my personal 6A). Even with an AP pitch servo installed near the pitch control reversal bell crank.
When the factory RV-9A demonstrator' panel was being upgrage with an AFS built dual HDX screen panel last fall, a bracket was designed for that location. It makes it very easy to install single or dual, Dynon or Garmin ADAHRS and they work very well in that location.
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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04-30-2019, 11:55 AM
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Join Date: Oct 2014
Location: Cedar Rapids, IA
Posts: 232
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Quote:
Originally Posted by rvbuilder2002
a bracket was designed for that location. It makes it very easy to install single or dual, Dynon or Garmin ADAHRS and they work very well in that location.
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Are you saying a custom bracket was fabb'd up, or Vans did the work to make one you can purchase from the factory?
Here's the instructions I followed.
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04-30-2019, 01:10 PM
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Join Date: Jul 2005
Location: Hubbard Oregon
Posts: 9,035
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It has been designed but is not in production yet.
Pretty easy to make DIY though.
__________________
Opinions, information and comments are my own unless stated otherwise. They do not necessarily represent the direction/opinions of my employer.
Scott McDaniels
Van's Aircraft Engineering Prototype Shop Manager
Hubbard, Oregon
RV-6A (aka "Junkyard Special ")
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