Home > VansAirForceForums

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

Keep VAF Going
Donate methods

Point your
camera app here
to donate fast.

Old 01-25-2022, 08:33 PM
Flyyak Flyyak is offline
Join Date: Jan 2012
Location: Birmingham alabama
Posts: 147
Default G3X Two Questions

1. I have tried to set the AOA calibrations on several flights without success. The minimum visible and caution alert settings show indications set but the stall warning indicates accepted but when done is pressed it indicates calibration unacceptable. I have re-read the instructions and followed them by performing a power off stall as instructed, indicates accepted but when done is pressed, states calibration not successful. What am I missing?

2. On takeoff I have started to experience high EGT reading on #1 cylinder (1400+) but CHTs are all well below 400. EGT only remains high for short period until I reduce prop setting from full to my climb setting of 2400.
RV 7 with 350
G3X touch & G5
Reply With Quote
Old 01-26-2022, 06:42 AM
Bill.Peyton's Avatar
Bill.Peyton Bill.Peyton is offline
Join Date: Sep 2009
Location: St. Louis, MO
Posts: 1,911

I just went through this process last week and it calibrated fine. Are you actually stalling the aircraft or are you approaching a stall? I would try again without actually stalling the aircraft. Also, I calibrated mine in the landing configuration with flaps in.

The single cylinder high egt could be a fouled plug. When only one plug is firing, the EGT goes up and CHT may go down
Bill Peyton
RV-10 - 1380 hours
First Flight Oct 2012
Aviation Partners, LLC

WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for their use.
Reply With Quote
Old 01-26-2022, 07:41 AM
Walt's Avatar
Walt Walt is offline
Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 6,613

Make sure you follow the calibration procedure/sequence listed in the IM. AOA Calibration Procedure
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, 2000+ hrs, New Titan IO-370, Bendix Mags, MTV-9 prop
Website:, Email:, Cell: 972-746-5154
Reply With Quote
Old 01-26-2022, 08:39 AM
rocketman1988 rocketman1988 is offline
Join Date: Jun 2010
Location: Sunman, IN
Posts: 2,968
Default What Walt said

If you try and set the points out of order it may not work...
Aerospace Engineer '88

Going to Paint at Evoke!
Garmin G3X-T, Barrett EFII S32, CAI, MTV-9B

Dues+ Paid 2021,...Thanks DR+
Reply With Quote
Old 01-26-2022, 12:35 PM
Flyyak Flyyak is offline
Join Date: Jan 2012
Location: Birmingham alabama
Posts: 147

Thanks. I think I followed the sequence but I will give it another try to make sure. I did do a full stall and recovery. When I check the settings, it shows calibrations for minimum visible and caution alert but none for stall.

I will also check plugs. Thanks for info.
RV 7 with 350
G3X touch & G5
Reply With Quote
Old 01-26-2022, 07:13 PM
calpilot calpilot is offline
Join Date: Aug 2018
Location: Independence
Posts: 230

Thing needed to be aware of.... AOA is a great tool for efficient flight..That said, do not rely on it to determine how close one is to critical angle of attack!!!!
In a "hi "g" bank, both wings are NOT in the same flight regime, that is, one may be closer to the critical angle of attack than the other, but the determination is usually on only one wing. Take a read, ''Flying the Wing". In my 33,000 hours, there is seldom a day that goes by that I don't think about information I learned from that book!

DAR Gary
Reply With Quote

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 10:47 PM.

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.