VansAirForceForums  
Home > VansAirForceForums

-POSTING RULES
-Advertise in here!
- Today's Posts | Insert Pics

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.


Go Back   VAF Forums > Avionics / Interiors / Fiberglass > Glass Cockpit
Register FAQ Members List Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Search this Thread Display Modes
  #21  
Old 05-08-2021, 09:23 AM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,567
Default

Quote:
Originally Posted by rocketman1988 View Post
I mounted my gsu25 on the subpanel and have had zero issues...
Same here and zero issues. In fact this is a preferred installation method by Garmin and VANs.
__________________
Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
Dues paid
Reply With Quote
  #22  
Old 05-08-2021, 09:38 AM
bjdecker's Avatar
bjdecker bjdecker is online now
 
Join Date: Jun 2005
Location: Georgetown, TX
Posts: 800
Default Location...Location...Location

Not to be contrarian -- oh who am I kidding...

I put mine on the back of the GDU 460; Vibration survey passed at all engine RPM from 1000 to 2700, go figure.

Easy access too..

Sort of like telling bumble bees that they cannot possibly fly..
Attached Thumbnails
Click image for larger version

Name:	IMG_0161.jpg
Views:	45
Size:	278.3 KB
ID:	11329  
__________________
Brian Decker
Retired Firmware Guy and Airplane Builder

2020 RV-14 QB -- Under construction - Tailcone & Empennage Complete.
2018 RV-7 QB -- Built, Flying
2007 RV-7 QB -- Built, Drowned, Resurrected and flying
1998 RV-8 QB -- Started, Sold
1986 Mooney 205SE
1980 Mooney 231

Aided and abetted building a number of other RV's.
Reply With Quote
  #23  
Old 05-09-2021, 08:23 AM
JDA_BTR JDA_BTR is offline
 
Join Date: Dec 2013
Location: Colorado Springs, CO
Posts: 1,329
Default

Me too very happy on the back of the pilot 460
__________________
Ser 140142, RV-14A flying - N1463
Ser 83825, RV-8 building - N8638?
USN Ret, Urologist, AME, Repeat Offender
Reply With Quote
  #24  
Old 05-09-2021, 09:18 AM
rocketman1988 rocketman1988 is offline
 
Join Date: Jun 2010
Location: Sunman, IN
Posts: 2,534
Default I think

I think that garmin cautions against mounting it on the gdu due to the possibility of vibration if the gdu is not adequately supported in the panel. This doesn’t seem to be a problem in the RV aircraft as the instrument panel is pretty solid. I have talked to a bunch of folks who mounted on the gdu with no issues...
__________________
Bob
Aerospace Engineer '88

RV-10
N464RL

Dues+ Paid 2020,...Thanks DR+
Reply With Quote
  #25  
Old 05-09-2021, 01:42 PM
KeithB's Avatar
KeithB KeithB is offline
 
Join Date: Mar 2014
Location: Granbury, TX
Posts: 301
Default

But there are also those of us with mounts to the back of the G3X who do have vibration issues (periodic ADAHRS reversion and reboot) that Garmin blames on the location.
__________________
Keith Brown

RV-14A Builder - kit #136
N314KC - First flight Mar 8, 2017, 24th in the air, >700 hrs
XP-400 Aero Sport Power, replaced with Lyc Thunderbolt 390
RV-6A sold
Sport Pilot (weight-shift control) - Airborne XT912
Dues paid 9/2020
Reply With Quote
  #26  
Old 05-09-2021, 02:10 PM
PilotjohnS PilotjohnS is offline
 
Join Date: Jan 2016
Location: Southwest
Posts: 1,578
Default GSU25

I would really really like to mount mine to the back of the GSU. It will leave me more room for the voltage regulator. Curious how many people have done this. Maybe it is time for a poll???
__________________
John S

WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for their use.

Dues paid 2021, worth every penny

RV9A- Status:
90% done, 90% left to go
Firewall Forward 5% in work
Fiberglass 0%, thought i was building in metal?
www.pilotjohnsrv9.blogspot.com
Reply With Quote
  #27  
Old 05-09-2021, 02:36 PM
Nova RV Nova RV is offline
 
Join Date: Aug 2015
Location: Leesburg, VA
Posts: 549
Default

Quote:
Originally Posted by PilotjohnS View Post
I would really really like to mount mine to the back of the GSU. It will leave me more room for the voltage regulator. Curious how many people have done this. Maybe it is time for a poll???
I put mine there when I saw that Mitch Lock put it on the back of the GDU when he was building what would become the East Coast demo plane. As far as I know, that plane has never had an issue, nor I on mine.
__________________
Chris Moon
Leesburg, VA

CFI-I ASMEL, ATP

RV-14A kit # 140243 (flying as of 11/18)

www.mykitlog.com/chrismoon/
Reply With Quote
  #28  
Old 05-09-2021, 02:51 PM
Janekom's Avatar
Janekom Janekom is offline
 
Join Date: Jan 2006
Location: South Africa
Posts: 860
Default

My feeling is that if you are sure that the screws are tight, the only other option is that you have bad unit.
__________________
Jan Hanekom
South Africa
Approved Person nr 325
http://www.rvbits.com
RV10 - ZU-XOX - (Flying)
RV7A - ZU-JRV - (Flying)
RV10 - ZU-JVR - (Written off)
RV7 - ZU-LOL - (Flying)
RV10 - ZU-RVI - (Flying)
RV7A - ZU-MER (Bought back)
RV7A - ZU-JAD (Sold Flying)
Dues paid for 2021 WITH A SMILE
Reply With Quote
  #29  
Old 05-17-2021, 05:20 AM
flysrv10 flysrv10 is offline
 
Join Date: Jan 2010
Location: Florida
Posts: 341
Default

Quote:
Originally Posted by flysrv10 View Post
I have good clearance between the cowl and fuselage. Don't feel excessive vibration, nothing more than any other RV I have flown. Garmin sez it is an "unusual" case.

If you want to be safe, I recommend that you fabricate the harness so you can locate it on the back of the unit if your choice location does not work. I cannot relocate mine due to harness length. Or wait for a couple of weeks until I install my replacement GSU and report back.
Got a new GSU25 and a roll servo. Apparently the roll servo was doing something weird on the network.

I still don't pass the vibration test but I no longer have G3X command a right steep climbing turn right at take off as it was happening with the old GSU25.
Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -6. The time now is 07:31 AM.


The VAFForums come to you courtesy Delta Romeo, LLC. By viewing and participating in them you agree to build your plane using standardized methods and practices and to fly it safely and in accordance with the laws governing the country you are located in.